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chapter 2 - Class Direct

1. Lloyd s Register of Shipping 10 11 13 13 14 15 17 18 20 21 595 71 73 14 19 79 80 80 83 84 85 93 109 107 107 109 FDA Level 2 Software User Manual October 2002 CHAPTER 9 Section 1 Section 2 Section 3 Section 4 Section 5 CHAPTER 10 Section 1 APPENDIX A Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 APPENDIX B Section 1 Section 2 FATIGUE PERFORMANCE ANALYSER Fatigue performance analyser front end FDA results tabular display View Graphical display of fatigue performance Using the ShipRight FDA Result Viewer Creating an FDA report FDA LEVEL 2 ACCEPTANCE CRITERIA General THEORETICAL SUMMARY Introduction Wave induced loads and motions in regular waves S N curve expert Structural influence coefficients Fatigue spectral analysis Voyage simulation Probabilistic fatigue damage 100A1 FATIGUE WAVE ENVIRONMENT TRADING PATTERNS Introduction 100A1 Fatigue Wave Environment world wide trading patterns for different ship types SDIS Feedback Form 111 111 120 127 131 133 135 135 137 i 138 140 141 142 144 144 147 147 147 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 1 Section 1 CHAPTER 1 INTRODUCTION Section 1 ShipRight Fatigue Design Assessment procedures Section 2 How to perform a level 2 Fatigue Design Assessment
2. 1 4 2 Active plating areas filter To reduce the number of plates being displayed and or narrow down the fatigue results by plating areas data filters may be applied Active Plating Areas Filtering is available either through the Active Display Plating Areas dialogue a drop down list box or the Plating Areas menu item in the menu bar examples of which are shown below Active Display Plating Areas Available Plates Active Display Plates Side Shel Outer Bottom ell Hopper Sloping Plate All gt Upper Deck Inner Bottom All Inner Skin lt lt Inner Longitudinal Bhd 9 11 Active Display Plating Areas The active plates are shown in the right hand side list box non active plates are in the left hand side list box Plates may be transferred between the two list boxes by using the move buttons as follows gt gt Moves the selected plate from the available to the active list box lt lt Moves the selected plate from the active to the available list box gt gt All Moves the all plates from the available to the active list box lt lt All Moves the all plates from the active to the available list box Hopper Sloping Plate Inner Skin Inner Longitudinal Bd 9 12 Plating areas filter 118 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Section 1 1 4 3 Stiffener display filter Stiffener display filters may be applied through a drop down list box or selection li
3. A Lloyd s Register ShipRight FDA p Joj x Exit About ShipRight FDA Project Manager S h j DRi I g h f FD J Wave Induced Loads amp Motions Structural Response Yoyage Simulation I Shor Term amp Long Term Fatigue Computation Fatigue Performance Analyser Program Options Project Date Shiptitle ard Dig H Sanba frie Bey C PROGRAM FILES sAOOTFOA LA ADD ASG ShipRight Strategic Research amp Development Fig 1 2 2 ShipRight FDA Front End Access the SDDG Lloyd s Register of Shipping 7 FDA Level 2 Software User Manual October 2002 This page has intentionally been left blank 8 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 2 Section 1 CHAPTER 2 GETTING STARTED Section 1 Ship definition conventions Section 2 Starting ShipRight FDA Section 3 Technical support mi Section 1 Ship definition conventions The following conventions are used in ShioRight FDA for defining the ship 1 Frames are numbered starting from the aft end with increasing numbers forward 2 The ship coordinate system is shown below Z Port Starboard Y ve ve X w oF Strake and stiffener numbering system Plating area Strake Numbering Stiffener Numbering Direction of Increasing Strakes Stiffeners Outer Bottom From Centre Line Outboard Outer Side Shell From Base Line Upwards Deck From Centre Line Outboard along plating Inner Bo
4. Hydrodynamic Wave Pressure 100 00 Degrees 100 00 s LC 1 Wave Paint Point Freq 11 rad s N m2 m N 2m2 m 4 822E 02 4 797E 02 4 7736 9 316E 02 9 246E 02 9 176E 2 535E 03 2 509E 03 2 483 4 207E 03 4 149 03 4 090 5 960E 03 5 954E 03 5 7496 Location j 7 818 03 7 643E 03 7 472E 0450 9 811E 03 9 542E 03 9 281 E 1 198E 04 1 159 04 Heading 10 l gt Deg 1 499E 04 1 440E 04 1 384E 04 100 z 0 575 1 797E 04 1 715E 04 1 636E 04 oe ihia DE su 2 147E 04 2 034E 04 1 926E 04 cee 1 l gt 2 561E 04 2 405E 04 2 2596 04 3 029E 04 2 819E 04 2 6246 04 Section f 0 00 4 gt 3 495E 04 3 212E 04 2 961E 04 3 805E 04 3 471E 04 3 167E 04 nas 13 927E 04 3 543 04 3 197E 04 ShipRight FDA 5 8 Hydrodynamic Pressure Table A data table is displayed with one column for every position around the immersed hull transverse section Use the spin buttons to vary the ship heading speed loading condition number and position along the ship s length Lloyd s Register of Shipping ie FDA Level 2 Software User Manual October 2002 This page has intentionally been left blank 78 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 6 CHAPTER 6 STRUCTURAL RESPONSE Section 1 Executing solvers Section 2 Viewing analysis results From the ShipRight FDA Front End click the button for Structural Response The Structural Response Cont
5. MASTER dat C NEW data LONGITUDE EFW i A Degrees Minutes Us i i MASTER This i passage has been i i NEW Data Either Create Great Circle Passage Waypoints S monne 1 ShipRight FDA Othe rara 7 11 Passage Database Input screen The drop down list Select MASTER Database or add NEW Modified Passages in the top panel allows the contents of the NEW Passage data from a previous session to be added to the MASTER Passage data for editing viewing purposes The MASTER Passage data is always loaded first Selecting MASTER Passage data after selecting NEW Passage data will reload the MASTER Passage data and cancel all changes to the NEW Passage data The pull down selection box Select Passage in the top panel enables selection of the currently displayed passage The currently displayed Passage number cannot be edited and is assigned automatically The Select Passage scroll bar to the right of this box also enables scrolling through the stored passages The top panel enables entry of the passage descriptions and selection of the currently displayed passage The description consists of a main Passage Title which is used to generate the Select Passage information automatically This information is used by the Route Database Inout Data option to display the list of available passages The Departure Port and Arrival Port descriptions are used to label the ports for the Show Ports option in the Display World Map screen The
6. N S number of stress cycles with a stress range S within one sea state Assuming that the stress process is narrow banded the stress range distribution can be expressed in terms of a Rayleigh distribution as follows S 5S2 Po a eod 9 402 802 where P S stress range probability function o standard deviation of the stress process S stress range 142 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Appendix A Section 5 The accumulated fatigue damage in one seastate can be expressed as follows P S DH m aay 45 where ny is the expected number of stress cycles in the given seastate The accumulated fatigue damage in one seastate may be rewritten as follows Bm peo D m Ss P S dS u m m So B where B modelling bias for the stress prediction model u m m So B correction factor to account for the S N curve change of slope For a narrow banded process the following expression can be used to simplify the above equations s P S dS NZI o T Z 0 where T Gamma function Since the stress process is not a strictly narrow banded process to remove the conservatism due to the narrow band assumption a rainflow correction factor A m which is a function of bandwidth e and the slope of the S N curve m is applied The spectral bandwidth is defined as follows 2 m L 1 4 Mg Mq where m m gt m4 are the spectral moments of the s
7. and is available on personal computers as PC Global Wave Statistics the European data is an additional database for PC Global Wave Statistics 3 3 Print Input Data The Print Input Data option reveals a fly out menu with the following options for generating a printout of the Voyage Simulation data Seakeeping Not available yet Criteria Trading Not available yet Pattern Route This generate a printout with full details of all Routes Database Passage This generates a summary of the Passage Database which consists of the passage titles location Database of the first and last waypoints passage distance and wave area map to use NOTE The Shift F1 function key copies the current screen image to the printer This applies to all Results screens when the PRINT button is enabled the Display World Map screen all Help screens and all Input screens 104 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 4 E Section 4 Voyage simulation limits The following data limits are applied throughout the Voyage Simulation System Passages Passages in a Route Routes OO o O 00 O O 5 The maximum number of waypoints per passage is 100 but for this is restricted to 80 waypoints in the passage database input screens to allow for the creation of extra waypoints when a NEW passage is converted to a MASTER passage Lloyd s Register of Shipping 105
8. 025040014 N SH T0 0000x00 80 0000 00 Empt 1860 0 Table Midship Section Stiffener End Connection Ready ShipRight FDA Quick Save Cancel OK Next gt gt 4 34 Stiffener 1 Select the Stiffener tab Select a plating area from the Midship Section Plating Area drop down list and a transverse structure from the Transverse Frame Type drop down list Repeat step 2 for all plating areas and transverse structure 2 There are four drop down option lists in the Select Stiffener Specification dialogue area Each list displays the contents of the project database Select Stiffener Specification Inverted T Apply M 350 0 x 100 0 x 11 0 17 0 1A Database WV HT32 X Database V N0000 0000 N NH T0 0000 00 80 0000x00 6 v Database 4 35 Select Stiffener Specification If this is the first time you have run ShipRight FDA the list for Stiffener Scantlings and End Connection Type is likely to be empty You may create a list from the standard stiffener databases provided with ShioRight FDA Clicking the Database button lets you create a project database See 4 3 e Select the stiffener category e Select the stiffener scantlings e Select the stiffener material e Select the end connection type Lloyd s Register of Shipping 45 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 In the data table highlight the stiffeners on which these properties are to be applied This is done by picking
9. Midship Section Bottom Strakes Corrected critical buckling strength Details of error Please enter an accurate description of the error or if a crash what you were doing at the time Please attach the ship file being used along with a screen dump of the error if possible Priority Code Severity Code Severity Code A Critical B Major C Minor Priority Code 1 Urgent 2 High 3 Medium 4 Low The ShipRight FDA Level 2 Software is licenced by Lloyd s Register of Shipping hereinafter referred to as Lloyd s Register or Lloyd s Register North America Inc if you are resident in or a company incorporated in North America for use subject to the terms and conditions set out in the licence agreement in the program installations Produced by Ship Design Systems Technical Queries sdis lr org Distributed by Marine Data Systems Distribution queries rules lr org Software Development Services supplied by Code 27 Limited code27 com Europe Middle East and Africa Regional Office Lloyd s Register 71 Fenchurch Street London EC3M 4BS Tel 44 0 20 7709 9166 Fax 44 0 20 7488 4796 Americas Regional Office Lloyd s Register North America Inc 1401 Enclave Parkway Suite 200 Houston Texas 77077 USA Tel 1 281 675 3100 Fax 1 281 675 3144 Asia Regional Office Suite 3501 China Merchants Tower Shun Tak Centre 168 200 Connaught Road Central Hong Kong SAR of PRC Tel 852 2287
10. New 4 23 Trans Bulkhead fa Select the Trans Bulkheads tab 2 In the Transverse Bulkheads frame use the spin button to enter the number of Transverse Bulkheads A table is displayed with one column for each Transverse Bulkhead If you have more than nine Transverse Bulkheads use the horizontal scroll bar to move to the right side of the table 3 A valid frame number must be supplied for each Transverse Bulkhead 4 If the Transverse Bulkhead is corrugated tick the check box for Corrugated Bulkhead Only four rows are shown Use the vertical scroll bar to display information for the other five rows If the forward face of a corrugated bulkhead is on the primary frame tick the check box in the row for Primary Frame No If the Transverse Bulkhead has no corrugation ignore the check box ar In the Wash Bulkheads frame use the spin button to enter the number of wash bulkheads A table is displayed with one column for each Wash Bulkhead If you have more than nine Wash Bulkheads use the horizontal scroll bar to move to the right side of the table 6 A valid frame number must be supplied for each Wash Bulkhead Also the height in millimetres There is no limit to the number of wash bulkheads you can specify NOTE The Wash Bulkheads do not appear in the longitudinal ship profile 36 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 4 Bulk Carrier Water Ballast Tank
11. New York W Europe Rotterdam N America Los Angeles S Europe Marseille Australia Adelaide USA Los Angeles N America New Orleans S Europe Marseille W Europe Rotterdam S Europe Marseille N America New Orleans W Europe Rotterdam Latin America Santos Brazil W Europe Rotterdam N America New York W Europe Rotterdam Far East Taiwan Indian Sub Cont Madras Australia Adelaide S Europe Marseille Japan Yokohama USA Los Angeles W Europe Rotterdam S Europe Marseille N America New Orleans Latin America Santos Brazil W Europe Rotterdam N America New York W Europe Rotterdam S Europe Marseille Japan Yokohama W Europe Rotterdam S Europe Marseille N America New Orleans Latin America Santos Brazil W Europe Rotterdam Japan Yokohama Japan Yokohama Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Appendix B Section 2 Table B 2 100A1 fatigue wave environment world wide trading patterns for oil product tankers Ship Type Group Aframax oil product tanker 80 000 125 000 dwt Panamax oil product tanker 50 000 80 000 dwt Handy oil product tanker 5000 50 000 dwt Lloyd s Register of Shipping Former USSR Black Sea N Africa Libya North Sea UK Norway Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanur
12. curve is the design curve which is two standard deviations below the mean 2 The right hand drop down list controls the treatment of the curve below the threshold stress So This allows the user to observe the effect of different assumptions 3 To add a user defined curve click the Add button Pick the tao Mean S N Curve Enter the stress range at zero cycles in the ko data entry box Enter the inverse of the S N curve entry slope in the Slope data entry box Enter the standard deviation of the log of stress cycles in the Standard Dev of Log N data entry box Enter the coefficient of variation COV of the stress cycles in the COV of N data entry box 4 Pick the Design S N Curve tab Enter in the Offset data entry box the number of standard deviations below mean value for the design curve The curve will be assigned a notation UserSN based on the threshold stress where Is the stress range at 107 cycles 4 4 FDA Options FDA Options allows the user to select the extent of the ship for fatigue calculation It also controls whether default voyage simulation is to be used The default FDA option is to include all stiffener end connections and use the 100A1 Fatigue Wave Environment see Chapter 1 Table 1 1 1 for voyage simulation From the menu bar pick FDA Options The FDA Computational Options dialogue screen appears ShipRight FDA FDA Computational Options FDA Computational Option FDA Option Name Test Ballast Hold
13. the Display World Map screen is displayed and the progress of the ship is highlighted on the map The user has access to a limited number of World Map options whilst the solver is running These are mainly connected with the information displayed facilities such as More Route selection and the Trading Pattern Passage Route toggle option are not available When the solver has completed the OK button is enabled This allows the user to exit from the World Map At this stage some of the panels turn to red to indicate the Solver has finished The results of the Voyage Simulation Analysis calculation can be viewed using the relevant Results option from the View pull down menu and printed using the relevant Print Results options from the View pull down menu 84 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 2 E Section 2 View menu Selection of View from the menu bar reveals a pull down menu with the following options Lloyd s Register ShipRight FDA Yoyage Simulation SolverC Solver View Options Exit Help muai MM gt Si a Display World Map Trading Pattern RE 7 Route Database l T Passage Database Computation Date Solver Criteria Print Results gt Run SolverC Solver Voyage Seakeeping Run Solver FDA Seakeeping Criteria FDA Default Seakeeping Criteria FDA Trading Routes FDA Default Trading Pattern Voyage Simulation Duration 20 00 Years B Project FDA Capesi
14. 3 9 Midship Section Stiffener Details After having defined the default stiffener locations properties and end connection for the ship it is often necessary to account further for longitudinal variation in these properties 3 9 1 Modifying End Connection Details Follow these general steps to modify the default end connection for a stiffener Repeat for all plating areas requiring end connection changes T Select the area of plating where the stiffener is located 2 Select the stiffener for which end connection is to be modified or displayed 3 Select the frames at which the end connection differ from the default A Select the required end connection from the end connection list 5 Assign the retrieved end connection to the necessary frame s 6 Apply the change to the stiffener T Accept the change or reject the change Lloyd s Register of Shipping 47 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 1 Plating area selection ShipRight FDA End Connection Details Builder Midship Section Plating Area End Connection Selection Outer Bottom F5 N00000000 N NH T0 0000x00 80 0000x00 6 Database Stiffener ID Frame Selection End Connection All Framings x as 2E 39 BHD 50250001 4 B NH T3 0020x14 B0 0000x00 7 Hold No E ajel 50250001 4 N SH T0 0000 00 80 0000 00 E mpt 0250 001 4 N SH T0 0000x00 B0 0000x00 E mpt F 50250001 4 N SH T0 0000x00 B0 0000x00 E mpt 48 5025
15. A Section 2 With the assumption of linear harmonic wave force and constant coefficients of mass added mass and damping and restoring forces the motion responses become linear and harmonic and can be expressed as follows X Xp cos M t e Surge Y Yo cos m t ey Sway Z Zo cos t Heave Oti a 0 cos t e Pitch pcos t Roll y YW cos wt e Yaw Similarly the global moments are assumed to vary linearly with wave height and harmonically with time with the encountering frequency we and is expressed at a given location k as a load transfer as follows BMv BMvo cos t 4my Global vertical bending moment BMh BMho cos t pmpn Global horizontal bending moment The local hydrodynamic pressure around each section is assumed to be composed of the following components e Froude Krylov wave pressure e Diffracted wave pressure e Radiated wave pressure e Hydrostatic pressure variation due to ship motions Similarly the total wave pressure transfer function at a given location k is the sum of the instantaneous pressure components as follows Po Pi Pyo Cos Wt Epy The local cargo inertia pressure is calculated from the variation of quasi hydrostatic pressure in liquid cargo holds due to ship motions The accelerations at a given location k with coordinates x Y Z relative to the ship s centre of gravity including the linearised variations of gravity forces from pitc
16. America Tubarao Brazil Australia Newcastle Australia Newcastle Australia Port Kembla Canada Vancouver S Africa Richard s Bay S Africa Richard s Bay S Africa Richard s Bay USA Baltimore USA Baltimore Australia Dampier Australia Walcott Australia Walcott Latin America Tubarao Latin America Tubarao Latin America Tubarao Australia Newcastle Australia Newcastle Australia Port Kembla Canada Vancouver S Africa Richard s Bay S Africa Richard s Bay S Africa Richard s Bay USA Baltimore USA Baltimore Canada Vancouver Latin America Rosario Argentina USA Charleston USA Charleston USA Freeport USA San Francisco Australia Walcott Canada Sept Isles Latin America Puerto Ordaz Latin America San Nicolas Peru Latin America Tubarao Australia Newcastle China Qinhuangdao L America Maracaibo Venezuela S Africa Richard s Bay USA Baltimore Australia Newcastle USA Charleston USA Charleston USA San Francisco Australia Haypoint Latin America Tubarao Latin America Tubarao Brazil N Africa Casablanca Morocco N Africa Casablanca Morocco Red Sea Port Sudan required for Handy size bulk carriers RDD London is to be consulted 150 W Europe Rotterdam Japan Yokohama Far East Shanghai W Europe Antwerp Japan Yokohama W Europe Rotterdam Japan Yokohama Far East Ta
17. Appendix A Section 1 APPENDIX A THEORETICAL SUMMARY Section 1 Introduction Section 2 Wave induced loads and motions in regular waves Section 3 S N curve expert Section 4 Structural influence coefficients Section 5 Fatigue spectral analysis Section 6 Voyage simulation Section 7 Probabilistic fatigue damage E Section 1 Introduction The Fatigue Design Assessment FDA procedure contained in the ShioRight FDA software is a unique integrated design approach based on the spectral method of analysis It is a first principle total system of analysis which departs significantly from conventional fatigue damage assessment procedures The drawbacks of the conventional procedures are presented hereafter to highlight the benefits of using the ShipRight FDA integrated spectral fatigue analysis procedure Since the fatigue damage process is a cumulative process it is extremely sensitive to the long term stress spectrum distribution Conventional methods based on the extrapolation of the long term stress based on the maximum lifetime loads are commonly used in fatigue calculations This approach is convenient because of the readily available once in a lifetime loads parametric expressions used for strength purposes However this approach has been shown to be extremely sensitive to the assumptions made in the calculation The maximum lifetime load approach is based on the assumptions that the stress response obtained from the individual load
18. FDATEAM Initials GPF Rev 1 002 C RDOTFDA TANKER SAMPLE LR RDD ASG ShipRight Strategic Research amp Development 7 7 Voyage Simulation Options menu Input This enables input of the data defining the seakeeping criteria to be applied to limit the ship s Seakeeping speed Criteria Input This enables input of the data defining the Trading Pattern Routes and Passages to be followed in Voyage the Voyage Simulation Simulation Print Input This enables a hard copy of the input data to be created for the Seakeeping Criteria Trading Data Pattern Routes and Passages Lloyd s Register of Shipping 93 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 3 1 Input Seakeeping Criteria The data is entered by selecting Input Seakeeping Criteria from the Options pull down menu this results in the data entry screen shown in 7 8 ShipRight FDA Yoyage Simulation Seakeeping Criteria Input Title 1 Title2 f Total No of Criteria 7 Current Criteria No ll 4 gt Description BOW VERTICAL ACCELERATION x ref P 314 000 Criteria Type Limiting Value Check Type TIME EEES fo ga 1 25 1 RMS Prob Max 0 0 Z ref BL 31 000 0 000 34 800 34 800 0 000 0 000 0 000 0 000 ShipRight FDA Select Oiteia MASTER criteia 7 7 8 Seakeeping Criteria Input Data Either Default Master criteria can be used or customised Local criteria can be created The default Master criter
19. Help The Help button gives on line help OK or These buttons exit this input form and respectively accept or reject the modified Trading Pattern Cancel data 3 2 2 Route Database Select the relevant Input Voyage Simulation option from the Options pull down menu to reveal the Route Database input screen This is used for creating and modifying Routes ShipRight FDA Yoyage Simulation Route database Route Tite Oil Trade Gulf to Europe full load via Suez TaS List of Ports BALLAST VIA SUEZ Add Route 7 List of Ports FULL LOAD VIA CAPE Total No of Routes 16 Index 1 ajj gt ILI X PASSAGES Total No of Passages 3 peer i gt l Distance 3089 in 00 Select Passage G Normal Deion Sailing time 1 Europe UK to SUEZ I C Reversed Direction Load time 00 Unload Description FAWLEYTOSUEZ o Load Other non Comment FAWLEY TO SUEZ Ret 0 Ballast v Sailing time 0 0 0 0 0 0 0 0 SUEZ TO RAS TANURA 0 0 6 0 0 0 RAS TANURA TO FAWLEY VIA C All Rout ShipRight FDA o kt 7 O All Passages g 7 10 Route Database A Route consists of a set of titles and a list of Passages and time information The logic for creating a route from a list of passages is that a Route allows ship type specific details to be incorporated such as loading time sailing transit time whereas a Passage only contains details of the actual sailing course Passages must be defined as Master Passages before they can b
20. Inserts a new record before the highlighted row Delete Removes the highlighted row As records are added or deleted the Total No of Passages in the central panel changes accordingly This box cannot be edited The PASSAGES button gives on line help The panel with the PASSAGES button above the passage table enables values in the table to be added or amended This panel displays the contents of the currently highlighted passage record in the table The current record can be changed by either clicking on the Index scroll bar in the PASSAGES panel then clicking on the required input box or clicking on the required record in the passage table In this case the value clicked in the table will become the current data entry box so the user can update this value immediately The Passage is selected using the Select Passage drop down list in the central PASSAGES panel The Description Comment is used to specify the loading condition type and any other details appropriate to this passage of the route The Distance of the passage in nautical miles is displayed on the far right of the central panel for information only In the case of a passage with zero distance the Distance will be given as Fixed Pt to denote a Floating Storage Unit location The Normal Direction Reversed Direction option list enables specification of Passage direction Each passage has a direction i e a departure port and an arrival port This direction option allows this passage
21. Percentage values indicates Maximum speed 75 of service speed Limiting criterion is No 5 and the predicted value exceeds the limiting value by 50 In this case the limiting value was 3 units so 4 51 is 50 greater than 3 The drop down list List of Selected Criteria Types and Description is for reference only This can be consulted to determine what the Limiting Criterion is The following information is included in the list box Criterion No as given in the brackets e g 5 Criterion Type e g ROLL AVA etc Check Type iie 1 to 4 Limiting Value Description 2 2 2 Voyage Simulation The tabulated results of the Voyage Simulation analysis are displayed by selecting the relevant Results option from the View pull down menu The predicted table of probabilities from the Voyage Simulation for each ship speed heading and loading condition can be viewed with summaries of occurrences for each particular wave height and period 90 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 2 oyage Simulation Probability Table 140 0 Degs Speed 15 Kn LC 1 Loadi Heading 140 0 Speed 1501 gare E ShipRight FDA 1 atime 2 H o 180 Bow Seas 90 Port 270 Stb _ Probability Thousand Probability 20 Years Total occurance of this table 2 828 Probability Million Probability Year Probabilities are multiplied by 1 000 Period 3 5 7 5 Voyag
22. Sloping Plate Inner Skin Display Envelope Magnitude Screening jAllFramings tt ttt Fatique Damage Index 1 00 Kif Min Max All Computed Fatigue Life 20 00 f AllFramings O Probability of Failure 7 000603 Safety Index 200 Hi Low Waterlines Midship Options Midship Display Tips Ready Sh ip Rig ht E D A Deterministic Fatigue Life for 20 00 Years Service Close 9 25 Midship Options 3 1 2 Midship Display The fatigue performance of each active stiffener is displayed using a bar the length of which indicates its magnitude For example if Fatigue Damage Index has been selected the longer the bar the greater the fatigue damage Whilst if Fatigue Life has been selected the shorter the bar the shorter the fatigue life When a stiffener does not meet the fatigue performance acceptance criterion set by the acceptance envelope a filled circle is located at the base of the bar ShipRight FDA Results iewer Midship Section File View WR 75 MinMat E M idship Options Midship Display Ready ShipRight FDA Deterministic Fatigue Life for 20 00 Years Service 9 26 Midship Display For stiffeners in the internal plating areas an acceptance criterion envelope is not available but deficient stiffeners are highlighted by a filled circle When the Min Max All Computed option is chosen the bars will be plotted symmetric about midship Two colours are used to differentiate between port red
23. The following Ice options become available when this box is checked Northern Allows the user to specify the northern limit of great circle sailing Ice Limit Southern Similar to northern ice limit Ice Limit Default Ice The Default Ice Limits resets the North and South ice values to 65 deg N and 50 Limits deg S Cancel This button exits the Great Circle option OK Generates the list of Great Circle waypoints and inserts them into the Waypoint table The Passage Details box at the right of the central panel provides information on the total passage distance and whether the currently displayed passage is NEW or from the MASTER database The distance Is only displayed if a MASTER passage is selected otherwise NA is displayed 102 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 In the case of a passage with zero distance the distance is given as Fixed Pt to denote a Floating Storage Unit Location The MASTER Data NEW Data toggle option in the Passage Details panel displays the status of this passage i e whether it has been saved and is hence a NEW Passage It can be used to force a MASTER Passage to become a NEW Passage without modifying it The lower bottom panel contains four buttons Help This provides help information Display This displays all MASTER and NEW passages graphically on a world map The All Passages This Passage option list enables prior selection of the p
24. The available options are e Single flat bar e No flat bar e Double flat bar e ripping bracket 3 Enter the dimensions of the frame stiffener in the data entry boxes to the lower right If there is a water tight collar pick the check box for Watertight Collar If there is a flange on the stiffener pick the check box Flange Edge Stiffener You can then enter a short five character description of the connection in the Desc data entry box for quick reference 4 Pick the Heel tab ShipRight FDA End Connection Database 001 2x001 3 N RH T0 0000 00 60 0000 00 X 10 Desc 2 l Sort New Cancel New Copy Draw Mode Library Schematic Scaled Delete All Single Flat Bar v Schematic All Dimensions in mm C No Heel Regular Heel C Soft Heel Stiffener Backing Bracket Choose Schematic Draw Mode to enter End Connection Dimensions then Scaled mode to view results ShipRight FDA SDD Guidel LR lt lt Prev Next Cancel New Close 4 56 End Connection Database Heel 66 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 Pick from the option list the type of heel for the frame stiffener If there is a heel proceed to enter the heel data in the data entry boxes on the picture For a watertight collar no heel definition a Pick the Toe tab ShipRight FDA End Connection Database 001 2 001 3 N RH T3 0300x12
25. This value is necessary to restrict the time at sea to the correct values i e a ship might take 14 days on the passage and then stay in port for seven days to load unload Hence the total passage time is 21 days i e only 66 per cent of which is at sea and contributing to fatigue life damage The number of days in port if not unloading or loading is defined in the Other non Sailing time box This value includes time that is not accounted for in the Unload Load time this might include time waiting for Suez clearance etc The time for dry docking is specified elsewhere Display The Display button displays the world map showing the Trading Pattern routes selected see the Display World Map option described in 2 1 All Routes This option list enables prior selection of the information to be shown after selecting the Display This Route screen Help The Help button gives on line help OK or These buttons exit this input form and respectively accept or reject the modified Trading Pattern Cancel data 3 2 3 Passage Database The Passage Database input screen for creating and modifying Passages is obtained by selecting the relevant Input Voyage Simulation option from the Options pull down menu The definition of the Passage data depends on the type of analysis required Normal Voyage Simulation Analysis For this case the Passage data defines the sailing course between two ports as a list of waypoints Floating Storage Unit Analysis The P
26. Web Thickness ri 11 00 mm Flange Thickness al 17 00 mm R1 5 00 mm R2 10 00 mm R Required Entry New F12 Delete Copy Library Delete All Sort 11 00 Amani iow Inverted i Ta JN m Bulb Plate Select between a Section View of the Stiffener or the Stiffener Section Properties ShipRight FDA Prey Next gt gt Discard Chase 4 51 Stiffener Database 1 From the Database pull down menu select Stiffener Database The stiffener database dialogue screen appears If this is a new project there are no stiffeners in the project database All the stiffeners in the project database are listed in the drop down list in the top right corner 2 From the Section Type option list choose whether this is a Standard Rolled or a Fabricated section The available stiffener types for each appear as tabs Pick the tab for the stiffener type you wish to create ShipRight FDA Stiffener Database a AANA AA AS fino New Stitener Da Input Dimensions Web Depth i o mm Web Thickness Ril 000mm Flange Width Ril 000mm Flange Thickness c o0 mm Section View Section Peoperties FR Required Entry Ni Cancel New Delete All Alf Dinan dm i Built up Section Symmetrical Ready ShipRight FDA Prey Next cares 4 52 Built up Section Symmetrical Click the New button The display will be cleared Enter the stiffener scantlings in the appropriate data entry boxes in the Input Dimensions
27. a level 2 Fatique Design Assessment The basic steps involved in performing a full FDA analysis are these Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Input information concerning the ship like structural arrangement loading conditions and midship properties etc under the FDA Project Manager Reference is made to Chapter 4 Run the FDA S N Curve Expert to determine the appropriate S N curves for all structural details to be assessed See Chapter 4 Execute the solvers for Wave Induced Loads and Motions This generates the response amplitude operators RAO s for the ship loadings and motions in wave See Chapter 5 Execute the solvers for calculating the structural influence coefficients i e stress in critical areas due to unit patch load See Chapter 6 Structural Response Perform Voyage Simulation in order to obtain the service profile necessary to perform a spectral analysis For the case of an existing ship the voyage simulation can be customised to reflect the service history of the ship For a new design the user can select the default FDA trading pattern for that ship type See Chapter 7 Determine the fatigue damage for all critical locations This is performed under Short and Long Term Fatigue Computation described in Chapter 8 Study the computed results of the fatigue design assessment with the Fatigue Performance Analyser Identify locations with inadequate fatigue performance See Chapt
28. and starboard green values 3 1 3 Station Details To obtain quantitative results for a stiffener displayed in the midship section plot point the mouse cursor at the base of the stiffener bar and click A Station Details window is displayed To bring up either the Stiffener or End Connection Viewer double click when the hyperlink icon appears over the stiffener or end connection name 128 Lloyd s Register of Shipping 3 2 Plating Area FDA Level 2 Software User Manual October 2002 Chapter 9 Section 3 Station Details Frame 5 Plate Outer Bottom Stiffener ID 21 2 10 Port Critical Location 1 575 0 x 13 0 150 0 26 0 T HT32 50250007 6 M RH T 3 007 5216 60 000000 Actual SM Curve O46 27 Fatigue Damage Index 02282 Deterministic Fatigue Lite arba Probability of Failure 1 93 4586E 02 Safety Inden 2 067449 Click with the mouse on the picture where the Damage Line touches the plate or use the Arow Keps 9 27 Station Details View Plating Area allows display of the fatigue performance acceptance criteria for a given plating area The stiffener axis direction is defined according to the plating area orientation convention given in Ch 2 3 3 2 1 Stiffener by Frame Plate This tab displays the fatigue acceptance criteria along a plating area for a given frame Four curves are shown for the port and starboard critical locations 1 and 2 respectively Frame Plating Area Fatigue performance criteria value critical lo
29. bar Lloyd s Register of Shipping 79 FDA Level 2 Software User Manual October 2002 Chapter 6 Sections 1 amp 2 m Section 1 Executing solvers To execute a solver select the item from the menu bar or from the control panel hypertext While the SolverL is executing a status window informs the user of the progress of the computation After completion the status window closes automatically Computation time depends on the machine specification Typically running all solvers sequentially on a networked 90MHz Pentium takes approximately four minutes a Section 2 Viewing analysis results From the menu bar select View Analysis Results are presented in two tabs the Structural Information tab and the Structural Influence Coefficients tab ShipRight FDA Influence Coefficients Summary Frame Number 39 4 gt Plating Area finner botom T Stiff Crit Loc 1 Crit Loc 1 Crit Loc 1 Crit Loc 2 Crit Loc 2 Crit Lac 2 ID Effective Effective End Dist Effective Effective End Dist Plating Width i Span Plating Width i Span Pltg Thickness mm Imm Pltg Thickness mm Imm 357 69x 20 00 1350 00 0 00 x 0 00 352 0 x 10 0 96 357 69x 20 00 1350 00 0 00 x 0 00 352 0 x 10 0 96 357 69x 20 00 1350 00 0 00 x 0 00 352 0 x 10 0 96 357 69x 20 00 1350 00 0 00 x 0 00 352 0 x 10 0 96 357 69x 20 00 1350 00 0 00 x 0 00 352 0 x 10 0 96 357 69x 20 00 1350 00 0 00 x 0 00 352 0 x 10 0 96 b Structural Inform
30. component can be combined with a constant linear scheme over the total duration of the spectrum and that the shape of the spectrum is dependant on basic ship parameters However it should be remembered that load components creating the stress response occur with different phase angles in different sea states and that the number of the stress cycles is the result of the superposition of each of the load stress responses and will differ from the number of incident waves Furthermore in view of the inherent limits of the simplistic maximum lifetime fatigue model and to ensure reliability the correlation factor determined from service experience is influenced by many variables unaccounted for in the model and therefore a significant safety factor is required to ensure that reliability of the procedure The main disadvantage of such a simplistic model relying so heavily on the correlation process is that should the structural configuration depart from the service experience base the model will not predict reliable results since it cannot autocalibrate itself due to the limited number of modelling variables Furthermore it should be realised that this approach Is very similar to the permissible stress levels approach currently contained in the Rules Lloyd s Register of Shipping 197 FDA Level 2 Software User Manual October 2002 Appendix A Sections 1 amp 2 Fatigue damage is mainly created by the small to medium sea states by virtue of the num
31. current computation 108 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 8 Section 2 E Section 2 Troubleshooting The SpecFDA solver is an optimised 32 bit program Since the solver is very CPU intensive attempts to perform simultaneous multitasking operations are in general difficult It is therefore recommended to allow the SpecFDA solver to run in a single task environment Failure of the SoecFDA solver to complete its task is reported when the console window shuts down and control reverts back to ShipRight FDA A message box is displayed indicating the nature of the failure as well as suggested action to remedy the problem ShipRight FDA J x Fatigue Damage Solver has quit unexpectedly while computing Frame 139 Plate Outer Bottom stiffener 0 Suggested Action Re run Fatigue Damage Solver DISK SPACE FREE 2 902 552 576 bytes 8 3 Error message box Typical SpecFDA failures are as follows e Insufficient disk space e Insufficient memory and resources e Corrupted link files In case there is insufficient memory and or resources it is recommended to close all active applications except ShioRight FDA and restart the solver If the problem persists it is recommended to exit Windows and restart Windows as all memory and resources may not have been released by previous applications during the Windows session Lloyd s Register of Shipping 109 FDA Level 2 Software
32. default If coating is applied in ballast spaces the default assumes no corrosion during the coating life period which is set to eight years E Section 4 Menu bar The Project Manager has a menu bar with five items 1 Project Ve Ship Data e Databases 4 FDA Options D About Ship Data and Database are available only if a project is opened FDA Options is available when all ship data is complete and S N curve expert analysis executed Frequently used dialogue screens or actions under Project and Databases can be accessed directly through icons in the toolbar About gives user and system information which is described in Chapter 3 ShipRight FDA Front End Lloyd s Register of Shipping 55 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 4 1 Project The Project pull down menu offers various project operation actions Some actions are not available when a project is opened Keyboard short cuts are indicated on the pull down menu Most options are straightforward some require further explanation as outlined in the following table Menu item New Project Open Project Close Project Delete Project Save Project Save Project As Restore Selected Input Archive Project Extract from Archive Import Summary Info Print FDA Report Make LR Disk Load LR Disk Database Doctor View Error Log Exit to Solvers See Section 1 See Section 2 Close the currently opened project Delete selected
33. files associated with the current project Save the project Duplicate the current project under a different project number Restore selected input to their initial values See following Create archive of project Extract a project from archive Import project created with earlier versions of FDA See Following View or edit project details project notes and view audit trail Printing of a ShioRight FDA project report for LR See following Copy project to floppy disk for delivery to LR Retrieve project from floppy disk delivered by LR Fix corrupted database files View log file of errors recorded by ShipRight FDA Exit Project Manager 4 1 1 Restore Selected Input r Restore From f Opening of Project M Las General Ship Characteristics bd General Ship Characteristics Loading Conditions Bulk Carne Midship Info Bulk Carrier Framing Carga Distibution Midship Section Properties Midship Plating Midship Section Stitfener Definition ShipRight F DA Cancel 4 47 Restore Ship Geometry Always Always Project opened Project opened Project changed Project opened Project opened Project closed Project closed Project closed Project opened Project opened Project closed Project closed Project closed Always Always Select the data type to restore from the drop down list Choose from the option list whether these values are to be restored to those active at the opening of the project or the last time they were
34. iewer Probabilistic Fatigue Analysis File Graph Options Goto Frame No 75 EE Plating Area Upper Deck v Stiffener 14 2 2 aj w i mela ael aj llaa all l Prob Fail for Frame 75 Upper Deck Safety Index for Frame 75 Upper Deck Stiff 14 2 2 Stiff 14 2 2 Number of Service Years Table disease nea AO E Ready Deterministic Fatigue Life for 20 00 Years Service ShipRight FDA 9 24 Graph Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Sections 2 amp 3 Whilst the acceptance criterion for the ShipRight FDA procedure is deterministic the user is encouraged to view the fatigue performance in a probabilistic format This format provides an additional insight into the level of probability of failure associated with each critical location and its evolution during the service life of the ship HINT The Stiffener and End Connection Viewers are available in the Table tab via the hyperlinks in the Stiffener Specifications dialogue area To display probabilistic results for the stiffener or plating area with the maximum probability of failure or maximum safety index select the appropriate option in the Goto pull down menu E Section 3 View Graphical display of fatigue performance 3 1 Midship Section Frame Fatigue performance criteria value Stiffener Min Fatigue performance criteria Min Fatigue performance criteria critical location Min Fatigue perform
35. in a common area so that it may be imported for other projects 5 2 Building a FDA report Each Report item title corresponds directly to the title used in the ShioRight FDA Results Viewer Therefore any data view displayed on the screen can be printed and incorporated in the FDA Report A selection of FDA results report items is available to create a complete FDA report These report items are similar to the tabular and graphical displays which can be viewed interactively from the ShipRight FDA Results Viewer Data Filters allow narrowing down the data to highlight particular results Upon selection of a report item from the list of check boxes in the Select Results to Print dialogue area the tab control panel for the subject report is enabled and the various options and filters can be set An example of control panel for the Sorted Fatigue Life report is shown below Lloyd s Register of Shipping 133 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 5 FDA Results Summary Report Builder Longitudinal Distribution Rib Areas by Plating Areas All Frames Midship Section late Frarme Report Template Min Fatigue Life Longitudinal Performance Overview Giebsanrisie Performance By Stiffener Sorted Fatigue Life This Section allows you to print Overall Minimum Fatigue life sorted by Overall Minimum Fatigue Life depending upon your Frame Plate and Stiffener Options Use the Filter option to filter out record
36. maximum speed at which the ship can operate for each seastate and the distance between waypoints within each sea area e The ship to wave headings are derived from the sailing course between waypoints and the wave directions in the wave statistics database e The wave direction probabilities are a function of the ship s course and headings which are adjusted incrementally to obtain 360 degree wave coverage The resulting probabilities are summated for each seastate ship speed ship to wave heading and loading condition to provide a lifetime Service Profile Matrix The wave statistics data is the Global Wave Statistics information supplied under licence by British Maritime Technology BMT e The accumulated long term fatigue damage is computed from each individual seastate contribution using the probability matrix of seastate occurrence defined by the computed 100A1 Fatigue Wave Environment and the associated short term fatigue damage rate and stress reversal frequency e The fatigue performance results are provided in the following formats A deterministic accumulated fatigue damage for the given service life at 97 5 per cent probability of survival A probability of failure for a given number of service years determined from a reliability fatigue model Lloyd s Register of Shipping 3 FDA Level 2 Software User Manual October 2002 Chapter 1 Section 1 1 2 Monitoring in service A link can be created between the FDA procedure and t
37. of each solver and view the results obtained from each step The ShipRight FDA Batch Mode button automates the iterative design process A word of caution however the user cannot override the batch execution once it has started Once it starts control is returned to the user only after completion of all the steps Depending on the extent of FDA computation full ship or selected frames and machine specifications a typical FDA batch may require anywhere between 3 to 15 hours 14 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 3 Section 3 A Section 3 Program Options The Program Options button controls the global settings for ShioRight FDA There are two tabs under the Program Options dialogue screen one controls the Data Paths and the other controls the User Preferences The function key F7 toggles between these two tabs ShipRight FDA Program Options Note Some Options Cannot be Changed While a project is Opened FDA Root Directory CAPROGRAM FILES ASHIPRIGHT FDANROOTFDA FDA System Database CAPROGRAM FILES SHIPRIGHT FDANSYSTEM FDASYS MDB FDA Library Database CAPROGRAM FILES SHIPRIGHT FDASLIBRARY FDALIBMDB Master Database CAPROGRAM FILES SHIPRIGHT FDA MASTDBS INPUT MDB Error log Path CAPROGRAMFILES ASHIPRIGHT FDAXROOTFDA 00 Project Archive Path CAPROGRAM FILES ASHIPRIGHT FDANARCHIVE 00 Voyage Simulation Data CAPROGRAM FILES ASHIPRIGHT FDANDATA
38. on the S N curve expert analysis They are respectively Allowable Undercut Weld Flank Angle Cruciform Joint Misalignment Use the spin buttons to alter these values if necessary The effect of these factors is described in the ShipRight FDA Procedures Manual 54 Lloyd s Register of Shipping Step 5 Advanced Options Optional FDA Level 2 Software User Manual October 2002 Chapter 4 Sections 3 amp 4 ShipRight FDA S N Curve Expert Longitundinal Stiffeners Correction Factor Below So Haibach Correction Below So y Hean Stress Effect UK Den Relation C Modified Goodman s Relation C Munse s Relation C Gerber s Relation C Sodenberg s Relation Comp Stress Range Factor 0 60 lol Residual Stresses Other Effects V Plate Thickness Effect iV S N Bending Factor V High Stress Cycle Clip Corrosion Rate Cargo Spaces 0 10 a gt mm pear Ballast Spaces 0 10 alo mm year V Coated Ballast Spaces ajel years Residual Stress Factor 1 00 aj Oy iii 3 S N Control Panel View S N Analysis Const Tolerances ShipRight FDA 4 46 View S N Analysis Pick the Advanced Options tab A list of options affecting the S N curve expert analysis are listed under separate categories For theoretical implication of each of the listed options consult the ShioRight FDA Procedures Manual or contact a ShioRight FDA specialist at the ShijoRight FDA Helpline These options should otherwise be set to
39. particular seastate The length of time is derived from the maximum speed the ship can operate in each seastate and the distance between waypoints within each sea area The ship to wave headings are derived from the sailing course between waypoints and the wave direction in the wave statistics database The wave prediction probabilities are adjusted by the ship sailing course and the ship heading increment The wave statistics data is based on the Global Wave Statistics information supplied by BMT The resulting probabilities are summated for each seastate ship speed ship to wave heading and loading condition to provide a lifetime Service Profile Matrix This information is used by the Short Term Fatigue Damage routine ia Section 7 Probabilistic fatigue damage Due to large variability in fatigue experimental data the modelling biases in the stress prediction model and the S N fatigue analysis method a probabilistic method to assess the fatigue life is preferred A simple log normal format for multiplicative limit state functions is used The fatigue limit state equation g X can be expressed as follows eX A D where 2 X lt 0 0 implies fatigue failure The fatigue strength coefficient K is defined as a random variable describing the inherent variability of the fatigue strength The median K defines the median S N curve and the coefficient of variation COV Cx is the COV of N given S Bias and uncertainty in Milner s Rule are defined by A
40. pick the New Group button You are prompted for the name of the group oF Select the new group from the Library Group list box Since this is a new group the Stiffeners in Library Group list box is empty A Lets say you want to create a new group based on the project database From the drop down list select Stiffeners in Current Project he available stiffeners in the project are shown in the list box below You can view the stiffener by double clicking on it Select the stiffeners you want with the mouse To copy the selected stiffeners to the new library group click the lt lt Copy button The program tells you how many stiffeners have been copied if the Show count on Copy check box is filled 5 After you finish with one stiffener type click OK to return to the Stiffener Database dialogue screen Select another stiffener type to add to the new group 6 You can copy stiffeners from left to right using the Copy gt gt button or right to left using the lt lt Copy button interchangeably To delete stiffeners from a library group select the stiffeners to delete in the Stiffeners in Library Group list box and pick the Delete from Library button Lloyd s Register of Shipping 63 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 4 3 5 Types of end connection A stiffener end connection with transverse structure may take on different design configurations The ShipRight FDA Structural Detail Design Guide prov
41. the fatigue damage index at failure The event of failure D 2 A B is the stress modelling error A B and K are assumed to have log normal distributions with medians A B K and COV s Cy Cp Cx respectively 144 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Appendix A Section 7 The probability of failure is Pr OB where standard normal distribution B safety index T In Z L B OnT where T is the service life and T is the median time to failure 7 _ K B Q and Om In I cDd cpHa c Lloyd s Register of Shipping 145 FDA Level 2 Software User Manual October 2002 This page has intentionally been left blank 146 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Appendix B Sections 1 amp 2 APPENDIX B 100A1 FATIGUE WAVE ENVIRONMENT TRADING PATTERNS Section 1 Introduction Section 2 100A1 Fatigue Wave Environment world wide trading patterns for different ship types J Section 1 Introduction Based on oil tanker size and oil type tankers are categorised into eight groups which include VLCC crude oil tanker Suezmax crude oil tanker Aframax crude oil tanker Panamax crude oil tanker Handy crude oil tanker and Aframax oil product tanker Panamax oil product tanker Handy oil product tanker Trading patterns for each ship type group which contain a number of trading routes are derived based on stat
42. these girders in the data table A If there is a longitudinal bulkhead in the topside tank proceed to the Topside Tank Longitudinal Bulkhead dialogue area Pick the check box and enter the centre line offset of this bulkhead 26 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 3 Side Stringers B Side Stringers Location Double Side Width 1 200 mm Midship Section Geometry v No of Side Stringers az gt a Z from Keel mm 7600 12 0 12200 11 0 ES 16800 15 0 Midship Section Geometry Deck Geometry amp D B Girders Ready ShipRight FDA 4 12 Midship Section Geometry Side Stringers This step is only available for double skin bulk carriers For single skin bulk carriers proceed to Step 4 1 In the Side Stringers dialogue area enter the Double Side Width 2 Enter the number of side stringers using the spin buttons The shelf plates need not be included In the first column of the data table enter the offset of these stringers measured upwards from the baseline In the second column of the data table enter their respective thicknesses Step 4 Section Editor B ShipRight FDA Midship Section Geometry Section Data Location No of Points 5 al gt Cargo Hold Area Forward Bulkhead Geometr v Midship Section Geometry Deck Geometry amp D B Girders Side Stingers __ Section Editor Displays a scaled
43. viewer main window More on this in 3 1 A window appears with the stiffener shown ShipRight FDA Stif _ O x File tility 575 0 13 0 1500 x 26 07 9 7 Stiffener viewer Under the File pull down menu are four items which are self explanatory e Minimise All Stiffener Viewers e Restore All Stiffener Viewers e Close e Close All Stiffener Viewers Under the Utility pull down menu is Copy Picture which allows the stiffener in view to be copied to a pasteboard for use in another Windows application 116 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Section 1 1 3 7 End connection viewer To obtain an instant display of an end connection that appears in a results table double click that end connection The end connection viewer is also available in View Midship Section under the results viewer main window More on this in 3 1 A window appears with the end connection shown ShipRight FDA End 0 File view Lkiliby 502508001 6 N RA T3 001 5x1 6 60 000001 9 8 End connection viewer The display shows the overall view of the end connection To obtain composite views of each connection detail such as heel toe bracket backing bracket etc double click on the display This can also be done by selecting Tile All in the View pull down menu ShipRight FDA End File view Ukiliby 0250 007 6 N RH T 3 00 9 9 Composite view To obtain an individual plot of a d
44. x 10 0 2 060599E 11 1 335926E 12 295 0 x 10 0 2 060599E 11 2 671851E 12 295 0 x 10 0 2 060599E 11 3 339814E 12 295 0 x 10 0 2 060599E 11 4 007776E 12 295 0 x 10 0 2 060599E 11 4 675739E 12 295 0 x 10 0 2 060599E 11 1 267693E 11 295 0 x 10 0 2 060599E 11 1 333053E 11 295 0 x 10 0 2 060599E 11 1 398412E 11 295 0 x 10 0 2 060599E 11 1 463772E 11 295 0 x 10 0 Structural Information Structural Influence Coefficients E ShipRight FDA _ Stuctural Response ar 6 4 Structural Influence Coefficients The computed structural influence coefficients are displayed in a data table in the Structural Influence Coefficients tab The structural influence coefficients are described as follows e C11 is the structural influence coefficient due to lateral pressure at critical location 1 e C12 is the structural influence coefficient due to lateral pressure at critical location 2 e 2 is the structural influence coefficient due to vertical hull girder bending moment at critical location 1 and 2 e C3 is the structural influence coefficient due to horizontal hull girder bending moment at critical location 1 and 2 e C4 is the structural influence coefficient due to unit deflection of structure between frames e C5 is the structural influence coefficient due to unit rotation of structure between frames C4 and C5 are not computed in the current release of ShipRight FDA Lloyd s Register of Shipping 81 FDA Level 2 Software User Manual Octob
45. 0 View Profile Frame Spacing Sec Frame Spacing Trans Bulkheads Water Ballast Tanks Hatch Openings _Click with the right mouse button to Zoom in and use the Scrollbars to move along ship ShipRight FDA cea ox neo 4 26 Hatch Openings Ta Pick the Hatch Openings tab A data table is displayed with one row for each hold 2 For each hatch opening enter the aft frame number in the column Aft Frame No Enter the hatch length in the Length column and the width in the Width column The forward frame number is calculated by the program and displayed in the column Fwd Frame No Alternatively enter the aft and forward frames and the length is automatically calculated Enter the coaming height above deck at the side in the Coaming Height column 38 Lloyd s Register of Shipping 3 9 3 6 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Cargo Distribution B ShipRight FDA Cargo Distribution Cargo Loading Condition Cargo Carried MENETE C User Defined Homogeneous C Alternate Specific Gravity 3680 00 Kg m3 Angle of Repose 35 000 Degrees Cargo Shape Coordinates View Hold Default FDA Cargo Shape 1 gt Displacement tonnes Total Weight tonnes 193730 00 167649 Loaded Cargo Holds Ready ShipRight FDA 4 27 Cargo Distribution In the Cargo Loading Condition dialogue area choose from the Cargo Carried drop down lis
46. 0 0014 N 5H T0 0000x00 B0 0000x00 Empt 50250001 4 N SH T0 0000 00 B0 0000 00 E mpt 50250x0014 N SH T 0 0000x00 B0 0000x00 E mpt 0250x001 4 N SH T0 0000 00 80 0000 00 E mpt 0250x001 4 N SH T0 0000x00 80 0000x00 Empt 0250 001 4 N SH T0 0000x00 B0 0000x00 E mpt 0250 001 4 N SH T0 0000x00 80 0000x00 E mpt End Connection Orientation C All Displayed End Connections Selected End Connections Displaying Stiffener 1 1 1 pf Toe Aft Toe Fwd Aft End Connection Details Stiffener Details Applying to S hipRight FDA Cancel OK Next gt gt 4 37 End Connection Details Select the End Connection Details tab Select the plating area from the Midship Section Plating Area drop down list The list will be slightly different for tankers and bulk carriers Step 2 Stiffener selection Select the desired stiffener from the Stiffener ID list box The status box tells you for which stiffener the data table is displayed and to which ones the changes are applied Step 3 Frame selection From the Frame Selection drop down list select the transverse structure where end connections are to be modified for the stiffener s in question A drop down list appears with these options e All Framings e Transverse Framing Bulkhead Framing Transverse Fwd of Bulkheads Transverse Aft of Bulkheads Odd Numbered Holds Even Numbered Holds Single Hold If the user selects the Single Hold me
47. 000 Voyage Simulation Program C PROGRAM FILES LLOYD S REGISTER OF SHIPPING SHIPRIGHT FDA DBS Phase Data Path C PROGRAM FILES ASHIPRIGHT FDA DBSPHASE Data Paths User Preferences al al T kal m Ready ShipRight FDA 3 2 Program Options Data Paths 3 1 Data Paths The Data Paths dialogue screen tells ShioRight FDA where to look for specific modules of the program and where to save and retrieve data These data paths are set to the default when the program is installed Normally there is no need to modify the default setting If the user wishes to modify the data paths browse buttons are available to the right of each path When a project is opened only certain data paths can be changed The following table summarises the default data path and data file settings for non network installation Path description Default path FDA Root Directory C Program Files Lloyds Register of Shipping ShipRight FDA FDA Project Directory C Program Files Lloyds Register of Shipping ShipRight FDA RootFDA FDA System Database C Program Files Lloyds Register of Shipping ShipRight FDA system fdasys mdb FDA Library Database C Program Files Lloyds Register of Shipping ShipRight FDA library fdalib mdb Master Database C Program Files Lloyds Register of Shipping ShipRight FDA mastdbs input mdb Error Log Path C Program Files Lloyds Register of Shipping ShipRight FDA rootfda Project Archive Path C Program Files Lloyds Register of Sh
48. 001 4 N SH T0 0000x00 B0 0000x00 Empt 0250 001 4 N SH T0 0000 00 B0 0000 00 Empt 930 1860 0 Miho Sesion Siere EndConnectin Ready ShipRight FDA Quick Save Cancel OK Next gt gt 42 4 32 Table Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 1 Defining stiffener locations ShipRight FDA End Connection Primary Builder Midship Section Plating Area Change Stiffener Side on Plate ID of First Stiffener 1 Number of Stiffener Groups EE ael F6 Current Group Number EE gt F7 Stiffener Offset Dimension 930 mm Stiffener Spacing 930 mm Number of Stiffeners 2 ajel F8 T i Midship Section Stiffener iI End Connection Ready ShipRight FDA 4 33 Midship Section 1 Pick the Midship Section tab if you are not already in it Choose a plating area from the drop down list in the Midship Section Plating Area dialogue area Perform Step 1 for all plating areas The plating areas on the list is different for tankers and bulk carriers 2 Using the spin buttons choose the Number of Stiffener Groups to be defined on that plating area A new group must be defined whenever there is change of stiffener spacing or discontinuity in spacing Stiffeners in the same group may have different scantlings material and end connections 3 Each stiffener is assigned a global stiffener ID The ID of the first stiffener in each plating area is set to 1 b
49. 001 6 N RH T3 0015x16 60 0000 0250 0016 N RH T3 001516 60 0000 0250 001 6 N RH T3 0015x16 60 0000 0250 0016 N RH T3 0015x1 ec b Stbd Fatigue Life Deterministic Fatigue Life for 20 00 Years Service 9 19 Min Fatigue Life Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Section 2 2 3 Longitudinal Deterministic Fatigue Performance The Longitudinal Deterministic Fatigue Performance Summary table enables the user to narrow down on the transverse frame plating area and ship side view of the fatigue performance criteria for the given FDA Options Set This display is particularly useful to e Identify the frames showing the minimum fatigue performance for a given stiffener e View sorted lists of the fatigue performance according to selected filters e View an evaluation of the required LRSN curve to satisfy the fatigue performance acceptance criteria The Longitudinal Deterministic Fatigue Performance table screen contains three tabs to allow the following data analysis functions 2 3 1 Fatigue Performance This table permits the location of the transverse frame showing the minimum fatigue performance criteria for a given plating area and stiffener The critical location and ship side is also identified Stiffener Min Fatigue performance criteria value Min Fatigue performance criteria frame Min Fatigue performance criteria critical location Min Fatigue performance criteria
50. 10 0 100 0 x 16 0 T HT32 0 1258 0 1146 300 0 x 10 0 100 0 x 16 0 T HT32 1 3 4 FDA Results screens Graph Options menu bar items The Graph Options drop down menu is available for all graphical results viewing Line Graph Linear X and Y axis scale Log Ln Graph Log Y axis scale and linear X axis scale Copy data for present graph to Windows Clipboard for use by other applications Copy Graph Data to Clipboard When selecting multiple plot options first pick this After selecting desired options pick this again It prevents instant redraw after every option Freeze Graph Redraw Lloyd s Register of Shipping 115 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 1 1 3 5 Ship plan view frame locator Frame selection in data tables and graph plots can be made with the spin buttons next to the frame number or alternatively click the right mouse button on the data table and a frame selection screen is displayed To bring up the frame selection screen from a graph plot click the left or right mouse button on the frame number data display box Srp hight FDA Setect Frame 9 6 Select Frame To select a frame scroll the mouse cursor to the desired frame location and click the left mouse button 1 3 6 Stiffener viewer To obtain an instant display of a stiffener that appears in a results table double click that stiffener The stiffener viewer is also available in View Midship Section under the results
51. 2 7 15E 02 1 16E 01 1 36E 01 1 09E 01 7 08E 02 4 95E 02 4 09E 02 3 55E 02 3 09E 02 2 68E 02 2 31E 02 1 99E 02 1 70E 02 A data table is displayed with six columns one for each component of motion Use the spin buttons to change the ship heading speed and loading condition number Lloyd s Register of Shipping 75 FDA Level 2 Software User Manual October 2002 Chapter 5 Section 2 2 2 Viewing global loads RAO 2 2 1 Graph view SE ShipRight FDA Motions amp Loads Vertical Bending Moment Nm r g L 2 B m None cho aeae chay ap ad s Fl r awo TETEA cfs ale Sechon Headings Deg Wave Frage 2frad s Speade Sl ONSVS Loadings3 5 5 Loads Graph From the Motions and Loads options list select either the vertical bending moment horizontal bending moment or torsional bending moment to be displayed The bending moments can be plotted for different headings speeds and loading conditions as well as for different stations along the ship s length The vertical bending moment graph shows three curves i e hog sag and mean Bending moments are given in a non dimensional format per unit wave amplitude i e the amplitudes have been divided by p g L2 B 2 2 2 Table view kaag Shiphighl FRA iodine Fr Levels 2 RAE CG 1 ARF zatia Z2 i Lita 40203 GE i 130 LAE a I a Tabbed 452040 d 1520 EEE A hE A 4 bhk Gt z4 1 Wp Tz LEE EIE TED GEN AFE HEDI 1 20 LEDI EIB 4
52. 250 001 4 6 0250 001 4 6 4 43 S N Curve Table Choose the Frame Number and the Plating Area via the spin buttons and the drop down list respectively A table of the S N curve expert analysis is displayed for every stiffener and its end connection in the chosen plating area and frame number HINT An alternative to using the spin buttons for frame selection is provided Click the right mouse button on the data table and a frame selection screen is displayed Lloyd s Register of Shipping 53 FDA Level 2 Software User Manual October 2002 Chapter 4 Sections 3 Shap Right FD Seist Frame 4 44 Select Frame To select a frame scroll the mouse cursor to the desired frame location and click the left mouse button Step 4 Construction Tolerances Optional Allowable Undercut Max Undercut Depth Plate Thickness Max LASN Class Max Allowable Undercut Depth mm Computation Max Allowable depth of undercut Weld Flank Angle Max Weld Flank Angle Degrees Axial Stress Concentration Factor Cruciform Joint Misalignment Axial Misalignment Tolerance t3 Maximum Allowable Axial Misalignment Smm S N Control Panel View S N Analysis ShipRight FDA oo f gt 062 oso f gt 1 00 mm a ahl 1 000 3300 4 45 Construction Tolerances Pick the Const Tolerances tab Three dialogue areas control construction tolerance related factors which have an effect
53. 60 0000 00 Desc 2 Sort New Cancel New Copy Draw Mode Library Schematic C Scaled Delete All Single Flat Bar X Schematic All Dimensions in mm Toe None Straight Soft Toe Straight Toe Bkt Thickness Soft Toe Radius Stifene fet Backing Bracket Choose Schematic Draw Mode to enter End Connection Dimensions then Scaled mode to view results i ShipRight FDA SDD Guide lL R lt lt Prev sii Cancel New Close 4 57 End Connection Database Toe Pick from the Toe option list the type of toe for the frame stiffener If there is a toe bracket proceed to enter the toe data in the data entry boxes on the picture Enter the thickness in the Toe Bkt Thickness data entry box 6 Pick the Backing Bracket tab ShipRight FDA End Connection Database Desc zo Sort New Cancel New Copy Draw Mode Library Schematic C Scaled Delete All Single Flat Bar r Backing Bracket C None Straight C Soft Toe Straight Backing Bkt Thickness 12 0 mm Soft Toe Radius _ Schematic Al Dimensions in mm Stiffener A Backing Bracket Bracket Radius ShipRight FDA lt lt Prev Next Cancel New Close l 4 58 End Connection Database Backing Bracket From the Backing Bracket option list choose the type of bracket if any Proceed to enter the detail of the bracket in the data entry boxes on the picture as well as the bracket thickness in the Back
54. 7381 700 tm Cw Waterplane Coef 0 910 Long Radius of Gyration 25 000 ZLPP Cargo Density 0 875 tonne m3 Ballast o Fully Loaded Accept changes and display the next input Screen ShipRight FDA Cancel ok Newt gt gt 4 9 Loading Condition Data Ballast Enter the data in all the blank data entry boxes for each of the loading conditions These are self explanatory GM is the transverse metacentric height Still Water Bending Moment is the maximum value for this condition For preliminary analysis the user has the option to allow the program to calculate approximate default values based on the fwd and aft perpendicular draughts and the ship characteristics For more accurate analysis supply exact values Most of these values can be obtained from the ship loading conditions manual For default calculations enter appropriate values in the Draught Forward Perp and Draught Aft Perp data entry boxes aS a minimum starting point From the Default Calculation options list choose Calculate Blanks to calculate the missing data alone or Calculate All to calculate all data overwriting any user supplied values Click the button to calculate 3 3 Midship Info The dialogue screens for inputing the midship section geometry for bulk carriers and tankers are slightly different because certain structural arrangement are specific to tankers e g longitudinal bulkheads and some are specific to bulk carriers e g topside tanks
55. 9333 Fax 852 2526 2921 Lloyd s Register of Shipping 2002 Registered office 71 Fenchurch Street London EC3M 4BS www lr org
56. A Level 2 Software User Manual October 2002 Chapter 7 Section 3 The three Titles for the Trading pattern can be modified in the boxes at the top of the screen The Voyage Simulation Time years is normally 20 years For part of this time the ship can be expected to be out of service due to dry dockings A representative annual average number of days out of service should be estimated and entered in the Dry Docking Days Year data entry box The buttons Add Insert Delete and New Trade Pattern in the centre panel control the information in the TRADING PATTERN table New Trade Deletes and clears all routes displayed in the table Pattern Add Adds a new route after the currently highlighted route Insert Inserts a new route prior to the highlighted route Delete Deletes the highlighted route record The Select Trading Route drop down list in the centre panel displays the Routes available The Route Title and List of Ports for each route appears simultaneously when it is selected Percentage his is optional and alters the way time is time on allocated to each route of the Trading Route Pattern by the Voyage Simulation analysis If the percentage time for a route is zero 0 or is not specified then the time allocated to this route is decided by the number of times this route or group of several routes can be sailed in unallocated time of the simulation The time spent on routes with a specified percentage is calculated firs
57. A Library Path C Program Files Lloyd s Register of 4 53 Stiffener Standard Library Select the Library button from the Stiffener Database dialogue screen The Stiffener Library dialogue screen appears If ShioRight FDA cannot locate the library file fdaliob mdb in the datapath specified in the global options see Ch 3 3 use the Browse button to locate this file Check to make sure you are in the Standard Library tab The stiffener type is shown in the Currently Selected Stiffener Type dialogue area From the Library Group list box select the library you wish to use Stiffeners in the library are listed in the Stiffeners in Library Group list box Select from the list which stiffeners are to be copied to the project database See Chapter 2 for hints on multiple selection To view a stiffener double click on that stiffener Click the picture to clear it From the drop down list select the option Stiffeners in Current Project The list box underneath will initially be empty To copy the selected stiffeners to the project database click the Copy gt gt button Repeat procedure for other libraries until all the stiffeners you need for the project are in the project database To view a stiffener double click on that stiffener After you finish with one stiffener type click OK to return to the Stiffener Database dialogue screen Select another stiffener type to add to the project database 4 3 4 Creating your own Stiffener Librar
58. A wave to ship direction of 180 is head seas O is stern seas 90 is for waves on the port beam and 270 days on the starboard beam 2 The results can be plotted as a continuous line but in reality the probability values are only available at the calculated wave to ship headings and interpolation between these headings is not possible ShipRight FDA oyage Simulation Direction Probabilities Normal Ballast Departure Normal Ballast Departure 90 Port 90 Port 180 180 Stem 7 Mead Stor Head Speed al A 270Stb Speed fall 270 Stb Es a verses Wave Direction Fi verses Wave Direction Maximum probability 3 136 Maximum probability 3 136 Total probability 40 635 Total probability 40 635 Load Case 1 Load Case 2 iV Display All Speeds Voyage Simulation Run S h 7 pRight Default mau Pattern for YLCC Crude Oil Tanker Print Ok 01 2003 7 6 Voyage Simulation Graph Display All This check box either displays the results for all soeeds together or the results for a single speed Speeds In the latter case the spin buttons to the right of the Speed value will be enabled and the user can select each speed in turn The Maximum probability value line below the graphs gives the predicted maximum wave to ship heading occurrence probability for all displayed speeds The Titles above the the two polar plots are extracted from the Voyage Simulation results and not from the Trading Pattern input d
59. Cargo Distribution Strake Definition 4 49 Print Preview Selection Pick which item s to preview from the list box and click the Preview button A preview window is displayed as follows lah gt vil Bide fax Teme 100 Lloyd s Register ShipRight FDA verston2s 20 01 2003 Buh Carrier Test Salk Carries FOA Peet DA OULARK SAMMNE Pyr Sy Fae Adre te Ge Dior F Prefect Opened ty User Meanie 13 87 14 Aar Trail hnas Valo Tek Corer Prag DA0119 15 9 0 Orp DeerRetion 2005 1996 14 10 15 Habip frin Phyu SHUN IPO i4 it in hoidp Piesa 2 041994 de 112 Sh wna tnr DG MONA Jes Ponien Mee Dead DONIF 14 bE 8 CM Om Bopa iyw 200000 14 8 SM Oar Beet Ampa SONI A Neder Prefect Oeened Hy User Grant Wichman Meese 1730m vat Trall Thaw Vader Loam Moree Sober A kn 2005856 17 045 Leet 2 Motes Sabre ka Noo 1791 Los A Motes Sole D Ra 300304 17 385 Seracoaw Rerpomer Sobre L han 00166 17 25 34 Vong Imee Soba Cha 200108 17 3035 Myg Pia fsha es SOLE TP EL ee Pangu Capanna Seine ha 0166 174003 Pau Capan ra ia A i 0 9 Grant Wichman FLOATS 03 19 11 Peace Comgezuion Some kan 210166 M 2006 4 50 Print Preview Lloyd s Register of Shipping OF FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 A toolbar provides these options n Go to first page of report Go back one page Advance one page Advance to last page Toggles between full size fit to page width and fit to screen e aeg r E S
60. F DA ShipRight FDA wa o 4 4 Edit Project Details Audit Lloyd s Register of Shipping 19 FDA Level 2 Software User Manual October 2002 Chapter 4 Sections 1 amp 2 Every time a user opens this project his her full name is recorded on the Project Log drop down list even if no changes are made Audit information can be shown for a specific record on the log or the full audit trail can be displayed To display the full audit trail click the List All check box E Section 2 Opening an existing project To open an existing project select the icon or select Open Project from the Project drop down menu A dialogue screen appears ShipRight FDA Open existing Project Project Title FDA Capesize Bulk Carrier Test Ship FDA Capesize Bulk Carrier Test Ship Double Hi Hull VLCC Test Ship v2 0 Beta ShipT ype Ship Hame Shipbuilder Yard Revision Drawing Date Initials Project Directory Project D Details Project Notes Select the Project that you wish to Open 4 5 Open existing Project The Project Title drop down list shows a list of available projects in the current FDA project directory see 4 5 Select the project from the list You can view any notes and history associated with the project by picking the tab Project Notes If the project you want is not on the list look for it using the browse button 20 Lloyd
61. FDA Quick Save Cancel OK Next gt gt 4 31 Longitudinal Plating Area View Pick the tab Longitudinal Plating Area View to view the strake thickness over the length of the cargo area Upon selection of OK the program checks each plating area to ensure all plating strakes have a non zero thickness and that the strakes are defined to the extent of the plating area 3 8 After defining the plating thickness for the ship connections attached to the plating areas lt ShipRight FDA End Connection Primary Builder Midship Section Plating Area Outer Bottom vy F5 54 gt F6 x ie ID of First Stiffener Number of Stiffener Groups Current Group Number Midship Section Stiffener Definition it is necessary to define the type of stiffeners and their end Transverse Frame Type Transverse Frame 7 F9 r Select Stiffener Specification J 7 Apply M 350 0 x 100 0 x 11 0 17 0 14 Database V HT32 M Database Inverted Stiffener Offset Dimension 930 mm 930 mm 24 TEN Stiffener Spacing Number of Stiffeners A v N0000x0000 N NH T0 0000x00 B0 0000x00 6 Database L J Stiffener ID Convention IV Include Girder Z Stringer End Conn Fwd Increasing ID Nos C Decreasing ID Nos 295 0 x 10 0 96 0 x16 0T 295 0 x 10 0 96 0 x 16 0T HT3 HT36 Material Trans Frame End Connection 50250
62. FDA Level 2 Software User Manual October 2002 This page has intentionally been left blank 106 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 8 Section 1 CHAPTER 8 SHORT TERM amp LONG TERM FATIGUE SOLVER Section 7 Running solver Section 2 Troubleshooting E Section 1 Running solver Selecting the Short Term amp Long Term Fatigue Solver button on the ShipRight FDA Front End starts the main fatigue solver In the interactive mode the user is prompted before the solver is started In a batch mode the solver is started automatically The Short Term amp Long Term Fatigue Solver computes the fatigue life for the longitudinals associated with the plating areas and frames which have been activated in the current FDA Options Set The Spectral Fatigue Computation SpecFDA is performed in three stages as follows Stage 1 Creation and or validation of SpecFDA link files Link files are created to transfer the input data to the solver During the creation of the link files a progress window is displayed indicating the percentage completion of each link file ShipRight FDA Short Term amp Long Term Fatigue Computation E Reading 100 S Cargo Read Complete FDA Linking 99 Writing Frame No 282 to FDA link S 11p Ri ght F DA Short Term amp Long Term Fatigue Computation 8 1 Linking progress window If the project link files resident on the hard disk have been cr
63. Factor Axial Misalignment Tolerance 33 00 High Stress Cycle Clip Midship Section S N Curve Calculation io View S N Analysis Const Tolerances Advanced Options 4 41 S N Control Panel The S N curve expert options are summarised under the S N Control Panel tab To use default options click the S N Defaults button To change these options see steps 4 and 5 Step 2 Begin S N Curve Expert Analysis Click the ShipRight FDA S N Expert Analysis button The progress of the analysis is shown on the completion bar underneath the button 52 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Step 3 Inspect the S N Curve Expert Analysis results ShipRight FDA S N Curve Expert Longitundinal Stiffeners S N Curve Expert Summary View Critical Location 1 LASN Design Curve Ps 50 0 N mm2 1 0E7 S N Curve Expert Ship View Critical Location 2 LRASN Design Curve Ps 50 0 N mm2 1 0E7 Stiffen Descrip 385 0 x 2 385 0 x 2 385 0 x 2 385 0 x 2 385 0 x 2 385 0 x 2 385 0 x 2 385 0 x 2 295 0 x10 0 9 End Connection T0500 0012 N RH T1 0000x00 B0 0000x00 Stiffener 285 0 x 29 0 FB S N Control Panel View S N Analysis ShipRight FDA 4 42 View S N Analysis Chapter 4 Section 3 Pick the View S N Analysis tab A data table is displayed The characteristic stress range values for the critical locations are shown for every stiffener end connection c
64. For reference purposes the LRSN curves are assigned a value which represents the stress range magnitude at 107 stress cycles The LR reference S N Curve is given as the mean S N curve 50 per cent probability of survival with a value of 75 62 N mm2 at 107 stress cycles The associated anti log of standard deviation is 0 6 Physically this S N curve represents the fatigue strength of a fillet weld joint at 45 degrees with the geometrical stress concentration factor removed Depending on the LR FDA Level adopted the final design S N curve is taken with a survival probability level of 97 5 per cent In making this selection ShipRight FDA takes into account a variety of factors that could affect the fatigue characteristic of these joints The user is advised to select the default options For more advanced options please consult the ShipRight FDA Procedures Manual or alternatively contact a FDA specialist through the ShiopRight FDA Helpline Step 1 Review S N Curve Expert Options ShipRight FDA S N Curve Expert Longitundinal Stiffeners a x S N Curve Expert Options Summary S N Curve Correction Below So Haibach Correction Below So os j S N Defaults Mean Stress Effect UK Den Relation Compressive Stress Range Factor 0 60 Residual Stress Range Factor 1 00 Ballast Corrosion Rate mm year 0 10 Cargo Corrosion Rate mm year 0 10 Undercut LASN Depth 062 0 80 Plate Thickness Effect Max Weld Flank Angle Degrees 50 SN Bending
65. Project Unless all the requested data is supplied you cannot exit from this dialogue screen 18 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 1 1 2 Project Notes You can enter notes for your own record in the Notes sub tab in the Project Notes tab The procedure comprises three possible levels of assessment ShipRight FDA Open existing Project Project Title FDA Capesize Bulk Carrier Test Ship Project Log 27 03 2002 10 47 Fda Administrator E dit the User File mo Project Details Project Notes C Program Files S hiphight FOAR ootF DA ShipRight FDA cea x 4 3 Edit Project Details Notes 1 3 Audit trail If this is a new project there will not be an audit trail For an old project the audit trail records all the modifications made to the project from its beginning To read the audit trail select the sub tab Audit in the Project Notes tab ShipRight FDA Open existing Project Project T ithe FDA Capesize Bulk Carer Test Ship Project Log 2770372002 10 41 Fda Administrator Edit the User File Loads amp Motions Solver D Run 28 03 2002 08 00 Loads amp Motions Solver D Run 28 03 2002 08 00 Loads amp Motions Solver D Aun 26 03 2002 06 03 Voyage Simulation Solver C Run 28 03 2002 08 05 Voyage Simulation Solver Y Aun 26 03 4002 08 10 Project Details Project Notes C Program Files 3 hipRight FODAR oot
66. Software User Manual Fatigue Design Assessment Level 2 October 2002 eae er ShipRight Design and construction Software User Manual Fatigue Design Assessment Level 2 October 2002 Raves Lloyd s Register of Shipping 71 Fenchurch Street London EC3M 4BS Switchboard 44 0 20 7709 9166 Fax 44 0 20 7488 4796 Web site www lr org Direct line 44 0 20 7423 extension no Fax 44 0 20 7423 2061 E mail shipright lr org ta Lloyd s Register Marine Business Stream 71 Fenchurch Street London EC3M 4BS Switchboard 44 0 20 7709 9166 Direct line 44 0 20 7423 extension no Fax 44 0 20 7488 4796 Website www lr org NOTICE AND TERMS OF USE The following terms and conditions apply to all services provided by any entity that is part of the LR Group as hereinafter defined 1 In these terms and conditions i Services means any and all services provided to the Client by Lloyd s Register of Shipping LR or any entity that is part of the LR Group as hereinafter defined including any classification of the Client s vessel equipment or machinery ii the Contract means any agreement for supply of the Services such as a request for services or any other document or agreement relating to the providing of Services and iii the LR Group means LR its affiliates and subsidiaries and the officers directors employees representatives and agents of
67. Tanks Hatch Openings Click with the right mouse button to Zoom in and use the Scrollbars to move along ship ShipRight FDA EE ee 4 21 Secondary Frame Spacing 33 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 1 To define the spacing of transverse web frames based on the primary frame spacings defined in step 1 proceed to the the Sec Frame Spacing tab Choose from the drop down list in the Cargo Hold Frame Spacing dialogue area where the secondary frame spacing is to be defined B For bulk carriers choose between DB Tank Floors Double bottom Hopper Side Transverse Hopper side tank Topside Transverse Topside tank and deck T For tankers choose between Floor Transverse Spacing Double bottom floors Deck and Long Bhd Deck longitudinal bulkheads inner and outer side skin Transverse Spacing if applicable After completing step 2 for one area repeat for the other areas ws In the same dialogue area choose the number of spacing changes using the spin buttons A data table is displayed with one row for each spacing change cr You have a choice of methods for entering the secondary frame spacing These are listed in the options list in the Data Entry Mode dialogue area Depending on the mode chosen data is entered in different columns These methods are all interchangeable Use the method that is easiest and requires the least data input The following describes how each method i
68. The NEW passage data saved in the oassage new file is read and checked to see that all waypoints are within the wave area boxes defined by the Global Wave Statistics database If not then an error message is reported and the user needs to adjust the waypoint concerned The error is shown in 7 14 Lloyd s Register of Shipping 103 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 ShipRight FDA B x Error analysing Passage Mo 133 Check passage details around Waypoint Mo 2 The passage course goes outside the GWS Wave Area details over land near this waypoint Select 400 New Modified Passages NEW PASSAGE data option Correct waypoints and Save 7 14 Error analysing Passage Initially only the Global Wave area data is used to process the NEW passage data The use of other wave statistics i e European or User Defined is implemented during the main Voyage Simulation analysis The Voyage Simulation analysis uses a hierarchical approach to allocate wave data statistics The standard worldwide Global wave statistics data is used first to cover the whole Passage then the wave data specified for areas covered by the European or User defined wave data replaces the Global wave data Consequently the User defined data need only cover local areas of interest The Global and European Wave Statistics databases are supplied by BMT Offshore Ltd The Global data is based on the BMT publication Global Wave Statistics
69. The basic steps to define the Midship Info are similar The dialogue screen is divided into tabs four for bulk carriers and five for tankers 24 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 3 3 1 Steps for defining Bulk Carrier Midship Info B Step 1 Midship Section Geometry B __ Midship Section Geometry Midship Section Type Bulk Carrier Double Skin Bulk Carrier Midship Section Geometry Breadth of Keel Plate Rise of Floor Bilge Radius Height of Inner Bottom C L Height of Inner Bottom Side Breadth of Inner Bottom from C L Topside Tank Tank Bottom Above Keel Side Breadth of Shelf Plate Depth of Vertical Inboard Side Vertical Inboard Side From C L gt ShipRight FDA Midship Section Geometry 16 80 1 20 dddal alse 10 80 mm mm mm mm i Deck Geometry amp D B Girders Displays a scaled cross sectional view of the Midship Section ShipRight FDA Location Midship Section Geometry v Hopper Side Tank Tank Top Above Keel 7 600 mm Breadth of Shelf Plate 1 200 mm E Side Stringers Cancel OK Next gt gt 4 10 Midship Section Geometry Chapter 4 Section 3 1 Pick the Midship Section Geometry tab if you are not already inside this tab From the Midship Section Type options list choose either single skin Bulk Carrier or Double Skin Bulk Carrier Step 3 applies only to double skin bulk carriers 2 From th
70. User Manual October 2002 This page has intentionally been left blank 110 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Section 1 CHAPTER 9 FATIGUE PERFORMANCE ANALYSER Section 1 Fatigue Performance Analyser Front End Section 2 FDA results tabular display Section 3 View Graphical display of fatigue performance Section 4 Creating an FDA report E Section 1 Fatigue Performance Analyser Front End The purpose of the Fatigue Performance Analyser is to enable the results from the analysis to be viewed in a tabular and graphical format to be sorted according to given criteria and finally to produce a ShipRight FDA report Selecting the Fatigue Performance Analyser button on the ShipRight FDA Front End launches the Fatigue Performance Analyser Alternatively the Fatigue Performance Analyser may also be started as a stand alone program by clicking on the FDA Results Viewer icon within the Lloyd s Register program group The Fatigue Performance Analyser Front End displays a list of available projects and their associated results files If the project you want is not on the list use the Browse button to locate it Upon selection of a project the results files for the selected project are displayed in the lower list box The results files are given a generic name according to the template FDAXXXX MDB where XXXX is a numeric identification number The details of the results files are g
71. a Persian Gulf Ras Tanura Persian Gulf Ras Tanura Former USSR Black Sea Former USSR Ventspils Latin America Venezuela Latin America Venezuela N Africa Libya N America Houston N America Houston N America Houston North Sea UK Norway North Sea UK Norway North Sea UK Norway Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura S Asia Ardjuna Indonesia S Asia Ardjuna Indonesia Former USSR Black Sea Former USSR Ventspils Latin America Venezuela Latin America Venezuela Latin America Venezuela N Africa Libya N America Houston N America Houston N America Houston North Sea UK Norway North Sea UK Norway North Sea UK Norway Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura S Asia Ardjuna Indonesia S Asia Ardjuna Indonesia Trading Route Exporting area Importing area S Europe Marseille N America New York N America New York Far East Taiwan Japan Yokohama Singapore W Europe Rotterdam N America New York S Europe Marseille Latin America Santos Brazil S Europe Marseille W Europe Rotterdam N America New York Latin America Santos Brazil N America New York Latin America Santos Brazil N America New York Fa
72. abs displaying the current results file data as follows e The FDA Options Tab displays in a tabular and graphical format the frames and the plating areas for which the fatigue performance has been computed according to the selected FDA Options Set ShipRight FDA Results Yiewer Fatigue Performance Analyser File FDA Results View FDA Options FDA0004 MDB Computation Date 20 01 2003 14 58 i Outer Bottom Upper Deck 75 85 ai Inner Bottom ARA FDA Options YS Routes Ready ShipRight FDA Deterministic Fatigue Life for 20 00 Years Service 9 2 FDA Options e The VS Routes tab displays the selected trading patterns in a tabular format together with the percentage time spent on each route The FDA Voyage description character string identifies the title reference of the trading pattern used for the Voyage Simulation If the FDA Voyage description character string contains the item Default Trading Pattern the voyage simulation has been performed using Lloyd s Register 100A1 Fatigue Wave Environment for the given ship type and characteristics e The Simulation Period item contains the period in years for which the voyage simulation has been performed as well as the computed in service period defined as the period under which the ship is subject to cyclic loading The in service period is the period during which fatigue damage is being accumulated and therefore a successful structural item from a fatigue life point of view
73. ading Wave Freq rad s Headings Deg Roll Amplitude rad m Speed 0 00 VS Loading 1 5 3 Motions Graph From the Motions and Loads options list pick one of the six components of motion such as surge sway heave roll pitch or yaw Use the spin buttons to control the ship heading speed and loading condition number Motions are given in metres or radians per unit wave amplitude 2 1 2 Table view FA ShipRight FDA Motions amp Loads Motions amp Loads Pitch Roll C Yaw C Surge C Sway C Heave C VBM C HBM C TBM x Axis Speed Loading 0 74 0 58 0 66 0 31 0 95 0 99 1 16 Er 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 0 00E 00 1 10E 02 1 47E 02 3 15E 02 6 02E 02 1 99E 02 9 98E 03 6 56E 03 4 38E 03 2 95E 03 2 01E 03 1 37E 03 9 45E 04 6 53E 04 4 54E 04 2 20E 02 3 35E 02 6 74E 02 9 30E 02 5 18E 02 2 43E 02 1 55E 02 1 10E 02 7 80E 03 5 49E 03 3 83E 03 2 65E 03 1 83E 03 1 25E 03 5 4 Motions Table 1 23E 03 1 69E 03 2 33E 03 3 19E 03 4 36E 03 5 91E 03 7 98E 03 1 07E 02 1 42E 02 1 88E 02 2 47E 02 3 36E 02 5 60E 02 9 89E 02 1 21E 01 8 78E 02 5 00E 02 3 37E 02 2 62E 02 2 05E 02 1 59E 02 1 23E 02 9 41E 03 7 16E 03 5 43E 03 2 02E 03 2 66E 03 3 49E 03 4 56E 03 5 96E 03 7 75E 03 1 01E 02 1 30E 02 1 67E 02 2 14E 02 2 79E 02 4 09E 0
74. age in the voyage similar system The status of each calculation is displayed on the control panel The date of the calculation is displayed as appropriate together with information on the principal options re Section 1 Solver 1 1 SolverC This executes the Seakeeping Criteria analysis which must be run before SolverV option The progress of the program is shown on a screen with a percentage completion value for each Loading Condition in turn The SolverC program uses the Motion Response Amplitude Operators calculated by the Wave Induced Loads and Motions module to predict the maximum ship speed that the vessel can maintain without exceeding the specified seakeeping criteria The program calculates the predicted motion response for each seakeeping criterion over a range of sea states specified by significant wave height and zero crossing period Each response is compared with it s limiting value and a failure to meet the criteria results in a soeed reduction for that sea state The motion response is evaluated for all loading conditions and ship to wave headings The results of the Seakeeping Criteria Analysis can be viewed using the relevant Results option from the View pull down menu and printed using the relevant Print Results option from the View pull down menu 1 2 SolverV This runs the Voyage Simulation analysis on the Default Trading Pattern or the user s Trading Pattern if this has been specified Whilst the solver is running
75. an be lowered by reducing the stress concentration factor and or the nominal stress in the end connection 2 To modify the end connection and stiffener select the button Midship Section Stiffener Details on the Project Manager Control Panel To reduce the stress concentration factor use a radiused bracket with larger arm length To reduce the nominal stress use a larger stiffener and or bracket scantling 6 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 1 Section 2 2 1 Structural Detail Design Guide Prior to commencing the application of the Fatigue Design Assessment procedure it is necessary to identify those areas and items of structural detail at risk to fatigue damage Experience with ships in service has enabled LR to provide information to assist the Shipbuilder in determining Specific critical locations within these areas which may be vulnerable to fatigue Particular emphasis is placed on locations where high stress magnitudes may be anticipated and for which correct alignment is important This information is presented in LR s Structural Detail Design Guide SDDG This can be accessed by clicking the LR Detail Design Guide button on the Ship Right FDA Front end See Fig 1 2 2 The SDDG is presented in Adobe Acrobat format and can be printed off in full or viewed on screen If you do not have Adobe s free reader this can be downloaded from the Adobe site at http www adobe com
76. ance criteria ship side Frame Plating area Stiffener Critical location The midship section menu item enables the display of the envelope of fatigue damage around a ship transverse section The Midship Section Screen comprises three tabs Midship Options Midship Display and Tips 3 1 1 Midship Options This window allows control of the data filters and the acceptance criteria envelope magnitude The acceptance criteria envelope is used to assist the user in gaining a qualitative assessment of the fatigue performance using an envelope drawn around the midship section The envelope is controlled by adjusting the Envelope Magnitude for the criteria being displayed The criteria can be adjusted by using the scroll bar or clicking on the magnitude display box next to the scroll bar Enter the envelope magnitude in the displayed message box Individual frames can be displayed using the Screening Option alternatively the minimum value of the fatigue acceptance criteria can be displayed using the Min Max all Computed option Lloyd s Register of Shipping 127 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 3 ShipRight FDA Results iewer Midship Section File Port 75 ajel Critical Location 1 20 Years Fatigue Damage Index Envelope 1 00 Starboard Active Display Plating Areas Available Plates Active Display Plates Outer Bottom Side Shell Upper Deck Inner Bottom lt lt All Hopper
77. anging the Current Criteria No then clicking on the required input box e Clicking on the required record and column in the table In this case the value clicked in the table becomes the current data entry so the user can update this value immediately A Description should be entered in the data entry box provided in order to easily identify the criteria 94 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 The Criteria Type pull down selection box enables selection of the seakeeping criteria to be checked The arrow keys can be used to navigate up or down the list or the first digit of a number can be entered from the keyboard to locate a particular criterion The following seakeeping criteria are available 1 Surge 2 Heave Basic ship 3 Pitch motion 4 Sway responses 5 Roll 6 Yaw 11 AVM Absolute Vertical Displacement Motion 12 AW Absolute Vertical Velocity 13 AVA Absolute Vertical Acceleration 21 AIM Absolute Transverse Displacement 22 AIV Absolute Transverse Velocity 23 AIA Absolute Transverse Acceleration 30 SLAM RVV RVM Slamming impact criteria 31 RVM Relative Vertical Displacement using local freeboard 32 RVV Relative Vertical Velocity The Check Type specifies the type of criteria check to be used to evaluate the seakeeping response The Check Type appears in the criteria table column headed CHECK as a value between 1 and 4 Other data items are dependent on t
78. any of them individually or collectively Any damage defect breakdown or grounding that could invalidate the conditions for which a class has been assigned must be reported to LR without delay If the Client requires classification services relating to vessels machinery or equipment classed by LR in a jurisdiction in which LR itself does not do business including without limitation Brazil Canada Greece and the United States of America the Client hereby acknowledges and agrees that these services will be performed by a subsidiary of LR that is part of the LR Group and that is authorised to conduct classification surveys and issue certificates on the vessel machinery or equipment or by another person or entity that has been approved by LR to perform the services If classification services are performed by an entity other than LR in accordance with this paragraph 3 the survey reports and certificates issued by that entity will be submitted to LR for acceptance LR will accept for classification purposes a survey or certificate issued by any LR Group entity In providing services information or advice the LR Group does not warrant the accuracy of any information or advice supplied Except as set out in these Terms and Conditions the LR Group will not be liable for any loss damage or expense sustained by any person and caused by any act omission error negligence or strict liability of any of the LR Group or caused by any
79. ariation choose the By Strake option A data table is displayed in the Longitudinal Strake Definition dialogue area If you choose the By Hold option the data table will have one row for each hold If you choose the By Strake option use the Number of Scantling Changes spin buttons to control the number of longitudinal plating thickness changes The number of rows in the table reflects the number of changes If you choose the By Hold option enter the different thicknesses for the strake in the Strake Thick column If you choose the By Strake option enter the starting frame number for the thickness in the Start Frame column If the thickness change does not fall exactly on a frame enter in the Frame Offset column the offset from that frame Offset is measured positive forward and negative aft Repeat the same procedure for the End Frame You may choose the By Hold method to enter the thickness and then pick the By Strake method to edit the table entries such as offsets To apply these changes to the selected strakes click the Apply button Lloyd s Register of Shipping 41 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 3 Longitudinal Plating Area View e ShipRight FDA Midship Section Plating Midship Section Plating Area Transverse Plate Areas Longitudinal Plating Area Longitudinal Plating Area View This does not have strakes defined to the extent of the plating area ShipRight
80. assage data is described by a single point in this case the Passage represents the location of a Single Point Mooring or Floating Storage Unit Passage data is stored at two levels in the Voyage Simulation system NEW PASSAGE data This consists of newly entered or modified passage data This data consists of passage titles and a list of waypoints for each new passage The NEW Passage information is not yet suitable for inclusion into Routes NEW Passages are converted into MASTER Passages every time the user exits this inout screen after changing Passage data MASTER PASSAGE data These passages contain additional information necessary for the Voyage Simulation analysis Only MASTER Passages are available for generating Route information 100 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 The Passage Database panel is shown in 7 11 gt ShipRight FDA Yoyage Simulation Passage Database p i Select MASTER Database or add NEW Modified Passages MASTER PASSAGE data v Select Passage 1 gt 1 Europe UK to SUEZ 4 Passage Title Europe UK to SUEZ Departure Port FAWLEY Wave Area Map to Use Arrival Port SUEZ OBMT GLOBAL Area z Total No of Waypoints 15 Latitudes N S Longitudes_ gt assage Details as Mins E zw Distance Current Waypoint 1 i W 3089 LATITUDE N S Degrees N 47 Location of this 3 accanao data 50 33 0 Os _
81. assages in each Route are drawn in the same single colour each passage in a Route has a box in the same colour The selected passage in the Trading Pattern Route is highlighted by a ship icon with a Load Reference Number The icon also indicates the Passage direction 2 1 2 Modifying a Passage graphically Using More when a single passage has been selected enables this passage to be graphically modified using the mouse The user sees a Passage Data Entry panel which offers similar facilities to those on the Passage Database Input screen see 3 2 3 Current Waypow 3 Dogroes Masts 15 sit s a bigoon amen E i 7 3 Display Passage Database Lloyd s Register of Shipping 87 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 2 The following mouse actions are available with the Passage Data Entry panel e lt A single click on the left hand mouse button makes the nearest waypoint in the selected passage the current waypoint e Moving the cursor across the map causes the waypoint entry boxes to be updated with the current cursor location and allows the current waypoint location to be changed e A double click updates the current waypoint to the specified mouse location e Clicking the right mouse button selects a new passage to be displayed and available for editing as does clicking on the desired Passage box at the bottom of the screen The following additional facilities are available on the Passage Da
82. assages to be displayed NOTE Using this Display button here is the only way in which a NEW Passage can be displayed It is necessary to save the NEW Passage data first using the Save Pass button The user can now use the More button on the Display World Map screen to graphically modify NEW Passages Cancel This exits from the input data screen without saving any data This includes passages which have been saved during the current input screen session OK This accepts the edited data and saves the modified passage information in a data file called passage new The passage new file is stored at a project level and is kept in the project directory The NEW Passage data must now be converted to a MASTER using the Passage Database Update screen which follows automatically If the user decides not to proceed with the Passage Database Update now this can be done at a later stage by e Loading the NEW Passage data with the Select MASTER Database or add NEW Modified Passages pull down selection box e Selecting OK and the Passage Database Update screen is then displayed 3 2 4 Passage Database Update ShipRight FDA Passage Database Update Update User Passage Database with new modified passages S 21p Right F D A oyage Simulation 7 13 Passage Database Update When data has been modified the Passage has to be validated and the MASTER Passage database updated Selection of Cancel avoids this whereas Run executes the update
83. ata Print This button dumps a copy of the current screen to the attached printer This facility is only available when the graph is displaying the correct values OK This returns control to the main menu 92 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Sections 2 amp 3 2 3 Print Results The Print Results option on the View pull down menu reveals a fly out menu with the following options Seakeeping This creates a hard copy of the seakeeping criteria analysis results file These results are contained Criteria in a data file called speedfat out Voyage This generates a hard copy of the voyage simulation analysis Simulation i Section 3 Options menu Selection of Options from the menu bar reveals a pull down menu with the following options Lloyd s Register ShipRight FDA Yoyage Simulation SolverC Solvervy View Options Exit Help Input Seakeeping Criteria Input Yoyage Simulation gt Trading Pattern omputation Date SER Print Input Dat Route Database Solver Criteria Seake rint Input Data Passage Database 0 01 2003 13 54 Solver Voyage Seakeening 20 01 42003 13 55 Voyage Simulation Cont FDA Seakeeping Criteria FDA Default Seakeeping Criteria FDA Trading Routes FDA Default Trading Pattern Voyage Simulation Duration 20 00 Years j Project Double Hull VLCC Test Ship V2 0 Beta Date 05 06 65 Bas Shiptitle FDA2 Tanker Yad 1 005 Dwg 95 896 Cs Shipbuilder
84. ation Structural Influence Coefficients ShipRight FDA Structural Response 6 2 Structural Information 2 1 Structural Information A data table is displayed showing structural parameters that are used or computed for each critical location at every stiffener end connection Fig 6 3 illustrates the items displayed in the table Use the spin buttons to select the frame and plating area To highlight the occurrences of a particular item in the table select the item by clicking on it For example if 290x10 96x15lIA is selected all occurrence of the stiffener 290x10 96x15IA are highlighted in red 80 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 6 Section 2 HINT There is an alternative method to using the spin buttons for frame selection Click the right mouse button to bring up a plan view of the ship Scroll the mouse to the desired frame location and click the left mouse button to select the frame Frame A Frame B Effective Span for 1A and 2B Location 1A Location 2B Location 2A Location 1B End Distance for 1A 6 3 Critical location parameters 2 2 Structural Influence Coefficients ShipRight FDA Influence Coefficients Summary Stiff Crit Loc 1 Crit Loc 2 Axial C2 Axial H C3 Bending C11 Bending C12 N Zmr N rome N rome N rarr 1 Nene 1 N rnreF 1 Nmm 1 Nmm 2 060599E 11 6 679628E 13 295 0
85. attern for the voyage simulation to be selected 22 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 3 1 4 Ship Groups Use the drop down list to select the correct ship group for your model By default if the new project is a double hull tanker a VLCC will be selected If the new project is a bulk carrier Capesize bulk carrier will be selected Change the default selection as necessary 3 2 Loading Conditions ShioRight FDA requires two loading conditions to be defined for tankers and four loading conditions to be defined for bulk carriers five if the vessel is Panamax size The loading conditions are arranged by tabs 3 2 1 Loading conditions for Bulk carrier B ShipRight FDA Loading Condition Data Loading Condition Title Case 1 1 Normal Ballast Condition 90 Bunkers Draught Forward Perp RY 5 380 metres Default Calculation Draught Aft Perp R 8900 metres Calculate Blanks LWL 279 000 metres C Calculate All VCG above Baseline 11 680 metres Calculate LCG from Midship aft fwd 2300 Eas en 4720 4720 metres R Required Values Displacement 70352 000 tonnes Still Water Bending Moment R 262920 000 tm Cw Waterplane Coef 0 870 Long Radius of Gyration 25 000 ZLPP Cargo Density 1 000 tonne m3 Ballast j Heavy Ballast Iron Dre Coal Ready ShipRight FDA Cancel ok Newt gt gt 4 8 Loading Condition Data Ballast Enter t
86. ber of stress cycles they create It is therefore essential that due attention is given to this part of the lifetime stress spectrum if reliable fatigue life estimations are desired This can only be achieved by using a spectral method of analysis which reconstructs the entire stress spectrum giving due attention to the combination of the various load components as well as the number of stress cycles created by the incident waves in each seastate The following sections briefly describe the theoretical background to the FDA procedure H Section 2 Wave induced loads and motions in regular waves To perform a spectral analysis it is necessary to obtain both the amplitude and phase of the components of wave induced loads and motions in regular waves Traditionally these results could only be made available by computation using a ship motion program However it is considered that this approach is not suitable in a design environment by virtue of the considerable time required for data preparation the computation and the analysis of results Furthermore it must be borne in mind that ship motions programs can be subject to instabilities in the computation procedures and therefore require significant post processing time to ensure consistency Also due to the various mathematical modelling techniques and associated algorithms the various ship motions programs utilised by the industry are likely to yield different results To ensure the reliable and c
87. cation Angled Gunwale Midship Section Geometry z C Rounded Gunwale Sheer Strake Upstand 0 mm No of Deck Knuckles 1 a gt O Y from CL mm Z from Deck mm 0 1500 0 Double Bottom Girders No of D B Girders 2 gt Y from CL mm 0 18 0 21160 18 0 So Midship Section Deck Geometry 2 Ready ShipRight FDA 4 16 Deck Geometry amp D B Girders Pick the Deck Geometry amp D B Girders tab Choose the type of gunwale from the options list in the Deck Geometry dialogue area Provide the Rounded Gunwale Radius or the Sheer Strake Upstand depending on the type of gunwale chosen Use the spin buttons in the Deck Geometry dialogue area to define the Number of Deck Knuckles One side of the ship is required to be defined starting from the centreline Enter the Y and Z coordinates of the knuckles in the data table The number or rows in the table is controlled by the spin buttons one row for each knuckle point The Y coordinate is measured outboard from the centreline The Z coordinate is measured upwards from the deck edge at side Proceed to the Double Bottom Girders dialogue area The number of double bottom girders is controlled by the spin buttons One side of the ship is required to be defined starting from the centreline Enter the centreline offsets in the first column and thicknesses of these girders in the second column of the data table Lloyd s Register of Shipping FDA Level 2 Sof
88. cation ship side Lloyd s Register of Shipping Frame Plating area Stiffener Critical location ShipRight FDA Results Yiewer Plating Areas g oj x File Graph Options Frame No 75 gt Outer Bottom 20 Years Fatigue Damage Index l W Et SEENEN EA we wa 3 2 Q 20 Years Fatigue Damage Index All Framings Outer Bottom Frame 75 Stdb Critt a Stbd Crit Port Crit1 Port Crit i16 HHA ST TY PEELE ELLE 00 123 4 5 6 7 8 1011121314 151617 1819 20 21 22 23 24 25 26 27 Stiffener Number on Plate ShipRight FDA Deterministic Fatigue Life for 20 00 Years Service 9 28 Plating Areas 129 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 3 3 2 2 All Frames All Frames enables the display of a three dimensional ribbon or surface graph for a given plating area critical location and frame range filter Each stiffener is represented by a ribbon running along the frame range filter Plating Area Critical location Fatigue performance criteria value Frame Plating area Stiffener Critical location ShipRight FDA Results Yiewer Plating Areas File Graph Options Frame Options Plot Options Stbd Crit hr Outer Bottom ne 20 Years Fatigue Damage Index 20 Years Fatigue Damage Index Stbd Crit1 All Framings Outer Bottom mm oun ees wl Hh i N idil ms Stiffeners by Plate Frame Ready ShipRight FDA Deterministic Fatigue L
89. ch Openings Cancel OK Next gt gt 4 22 Trans Bulkheads l Select the Trans Bulkheads tab Use the spin buttons to enter the number of transverse bulkheads A table is displayed with one column for each bulkhead If you have more than nine bulkheads use the scroll bar to move around the table 2 Referring to the following diagram enter the missing data in each column If the forward face of the corrugated bulkhead is on the primary frame tick the check box in the row for Primary Frame No If the bulkhead stool has a pillar underneath tick the check box Bhd Stool Pillar and enter its distance from the aft stool frame Lloyd s Register of Shipping Forward face a of Bulkhead Shelf Plate Offset abt Fwd Frame Offset abt Aft Frame fo Aft Frame Primary Forward Number Frame Frame Number Number 35 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 3 Double Hull Tanker Transverse and Wash Bulkheads T ShipRight FDA Cargo Tank Arrangement Transverse Bulkheads F Corrugated Bulkhead No of Transverse Bulkheads 6 al gt View Profile Buktesdwotomae 1 2 es e 60 70 80 90 100 110 Wash Bulkheads No of Wash Bulkheads 5 l gt 2 65 75 85 95 105 Swash Height mm 10000 10000 10000 Centre Tank ONLY uv Frame Spacing Sec Frame Spacing H Trans Bulkheads Water Ballast Tanks S Ready ShipRight FDA Cancel ok
90. check box Select Redrw Zoom or All to display the ports This check box allows only the currently selected Voyage Route Passage to be displayed Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 2 Select Redrw Zoom or All after making the selection Each new Passage or Route selected is added to the current display but using Redrw etc will result in only the current selection being shown No Sea Areas he coverage of the worldwide Global Wave Statistics data and other user defined wave data can be viewed via the drop down list No Sea Areas The default setting is not to display any sea areas 2 1 1 Selection of a particular Route or Passage To select a particular Route or Passage to highlight click on the desired Route Passage box at the bottom of the screen When the Passage Database information is displayed clicking with the right hand mouse button locates and selects the passage with a waypoint nearest to the cursor location even if the passage is not currently displayed see Only Show Selection option above The selection of a particular Route or Passage is unaffected by the More option When the More option is active then the selection of a new Route or Passage results in the new selection becoming the current selected highlighted Route or Passage The user will be requested to save the modified information if necessary When Trading Pattern data is displayed then all p
91. computed simulation period e Probability of Failure for a given simulation period e Safety Index for a given simulation period The user may refer to Appendix A for the analytical definitions of the fatigue performance criteria 20 fears Fatigue Damage Index Envelope 1 00 20 ears Fatigue Damage Index Envelope 1 00 Deterministic Fatigue Life 97 52 Envelope 20 00 20 ears Probability of Failure Envelope 1 000E 03 20 ears Safety Index Envelope 2 00 9 4 Fatigue performance criteria Selection of the fatigue performance criteria to be displayed is done either through a drop down list the Fatigue Options menu bar item or an option list 1 3 2 Occurrence of a table data value To highlight the occurrences of a particular item in a results table select the item by clicking on it For example to find out how many times stiffener 10 2 3 appears in a table column first select any 10 2 3 on the table All occurrences of stiffener 10 2 3 in that column are highlighted in red and the number of times it appears is reported in the status bar 1 3 3 FDA Results screens Edit menu bar item The Edit menu bar item is available for all tabular displays and it permits the user to Copy Grid Data to the Clipboard the selected table items The copied table items may then be pasted into a word processing document or spreadsheet 114 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 C
92. cross sectional view of the Midship Section ShipRight FDA a arose 4 13 Midship Section Geometry Section Editor 1 After completing the preceding steps 1 to 3 for the Midship Section Geometry proceed to do the same for the locations forward and aft of the cargo area From the drop down list in the Locations dialogue area select Cargo Hold Area Forward Bulkhead Geometry his can be done under any tab 2 Select the Section Editor tab The program then prompts you if you wish to copy the midship section geometry as a starting point for defining the geometry at this location You are advised to copy the midship geometry as a starting point Lloyd s Register of Shipping 21 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 3 You can alter the shape of the midship section by defining the coordinates of the hull envelope side shell and bottom From the Section Data dialogue area choose the No of Points to use with the spin buttons You are recommended not to use more than 10 pairs of points A Enter the Y and Z coordinates of these points in the data table Y is measured outboard from the centreline and Z is measured upwards from the baseline 5 Go through each tab in turn and modify the data as necessary 6 Repeat Step 4 for Cargo Hold Area Aft Bulkhead Geometry 3 3 2 Steps for Defining Double Hull Tanker Midship Info T Step 1 Midship Section Type T ShipRight FDA Double Hull Tanker Mi
93. ction of the long term wave environment it is essential to employ a realistic wave environment Using a concept similar to the 100 Al Longitudinal Strength Standard based on the North Atlantic wave environment the 100A1 Fatigue Wave Environment Standard has been formulated It is computed systematically for a combination of trading routes appropriate for the ship type and ship characteristics under investigation The trading routes which are a direct function of the ship type have been determined from statistical analyses of world wide trading patterns In addition to the 100A1 Fatigue Wave Environment Standard a User Defined Wave Environment using specific trading patterns specified by the Shipowner or the Shipbuilder may be used The 100 Al Fatigue Wave Environment trading patterns for large crude oil tankers and bulk carriers are Summarised in Appendix B All Trading patterns are currently assumed to consist of a loaded and a ballast passage The purpose of the Voyage Simulation module is to predict the probability of the ship encountering a particular seastate for the range of ship speeds ship to wave headings and loading conditions The module extracts the seastate probabilities for each area of ship operation and combines these with the Ship to wave heading probabilities and the length of time exposed to each seastate to derive the total probability of the ship experiencing a particular seastate e The length of time is derived from the
94. d and the inner side skin 28 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Gi Proceed to the next dialogue area Enter in the respective data entry boxes e Longitudinal bulkhead s web frame depth e Inner longitudinal bulkheads offset from centreline e Web frame depth for deck between two inner longitudinal bulkheads e Web frame depth for deck between inner longitudinal bulkhead and inner side skin For ship with a centreline longitudinal bulkhead only one value of deck web frame depth is required A Use the Wash Bulkhead check box if wash bulkhead is present A data entry box appears where the Wash Bulkhead Height above BaseLine is entered D For ships with struts between longitudinal bulkheads enter the distance between the strut centreline and baseline in the Strut CL Height above BL data entry box Step 2 Midship Section Geometry T ShipRight FDA Double Hull Tanker Midship Section Geometry Midship Section Geometry Location Midship Section Geometry Breadth of Keel Plate I Rise of Floor Bilge Radius 2 200 mm Height of Inner Bottom C L 3 000 mm Height of Inner Bottom Side 3 000 mm Breadth of Inner Bottom from C L 21 160 mm daily Top Side Tank Topside Tank Hopper Side Tank Tank Top Above Keel 8 625 mm 14 E Midship Section Deck Geometry amp gt Ready ShipRight FDA 4 15 Midship Section Geome
95. d in the data table Pick the frame to be changed with the left mouse button click the right mouse button to assign the change To select a range of frames at the same time click and drag over the range To undo the change click the Restore Defaults button Step 6 Applying the change to the selected stiffener s Once the stiffener properties in the data table has been modified proceed to apply the changes to the selected stiffeners The status box tells you for which stiffener the table is displayed and to which stiffener s these properties are applied Pick the Apply button to apply the change Step 7 Accept the change or reject the change Selection of the OK or NEXT button accepts the changes made Cancel discards the changes made and returns to the Project Manager Control Panel 3 10 S N Curve Expert Analysis 3 10 1 ShipRight FDA data checking At this stage ShipRight FDA should have all the necessary information to select appropriate S N curves for each stiffener and stiffener end connection pairs When the user selects the S N Curve Expert Analysis button from the Project Manager Control Panel a data check is automatically performed If data is found to be incomplete or inconsistent a warning message is issued ShipRight FDA Data Check x 3 ShipRight FEA has Found inconsistancies with your data Would you like to view the results of the check 4 39 FDA Data Check The user has the option to view the results of the c
96. d to update the table with the correct values The Print button is disabled until the table has been updated Print The Print button will dump a copy of the current screen to the attached printer This facility is only available when the table is displaying the correct values Help Provides on line help as does the F1 function key OK Returns control either to the main menu Lloyd s Register of Shipping 89 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 2 The following display options are available Percentage values Actual values This changes the displayed values between e Percentage of service speed to sailing speed knots e Percentage exceedance of the specified limiting criteria to predicted motion value for that criteria The screen is automatically updated after clicking this toggle option Display Display the maximum predicted speed that the vessel can maintain without exceeding any of the Limiting seakeeping criteria Use Display after clicking the check box Speed Display Limiting Criteria Predicted Values Use Display after clicking the check box The first limiting seakeeping criteria number that exceeds the criteria limiting value is displayed inside brackets The predicted motion value for this criterion is displayed after the brackets e g 11 2 5 4 51 with Actual values indicates Maximum speed 11 2 knots Limiting criteria is No 5 and predicted value 4 51 units e g 75 5 50 with
97. define the inboard and outboard girders that forms the tunnel A Define which cargo hold is used for heavy ballast using the spin buttons in the Heavy Ballast Hold No dialogue area Lloyd s Register of Shipping of FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 4 Double Hull Tanker Water Ballast Tanks T ShipRight FDA Cargo Tank Arrangement T Water Ballast Tanks feallast Tanks 7 No of WB Tank 54 From To Tank Overflow Outlet E Frame No Frame No Length mm Above B L mm Profile v 110 FP Frame Spacing Sec Frame Spacing Trans Bulkheads Water Ballast Tanks Click with the right mouse button to Zoom in and use the Scrollbars to move along ship_ ShipRight FDA cmon ok ne 4 25 Water Ballast Tanks 1 Pick the tao Water Ballast Tanks Choose the number of water ballast tanks using the spin buttons WB Tank No Only one option is listed under the drop down list A data table is displayed with one row for each ballast tank A Enter the start and end frames for each ballast tank in the data table The start frame for the next ballast tank is taken to be the end frame of the preceding tank It is better to view the ballast tank arrangement in plan view Step 5 Bulk Carrier Hatch Openings B ShipRight FDA Cargo Tank Arrangement Hatch Dimensions ts Frame No mm mm Frame No Height mm Co MEE I 72 61 88 115 142 169 196 223 25
98. dialogue area Some data like corner radii are optional Required data has R in front of the data entry box A The display is automatically uodated To check the section properties pick the Section Properties tab To discard the newly created stiffener pick the Cancel New button To sort the database according to increasing web depth pick the Sort button The stiffener ID is displayed in front of the stiffener name Copy replicates a stiffener so it can be modified Delete deletes the stiffener shown Delete All deletes all stiffeners of the selected type in the project database To scroll through the list of stiffeners in the project database pick the Next or Prev buttons Close returns to the Project Manager he Library button allows you to copy stiffeners from the library to the project database Lloyd s Register of Shipping 61 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 4 3 3 Copying a stiffener from a library to the project database ShipRight FDA Stiffener Library Library Group Currently Selected Dtiffener Type fie Inverted DIN Standard El DIN Standard UIA European Standard LIA European Standard UIA Browse mE S E A Stiffeners in Current Project 7 350 0 x 100 0 x 11 0 17 0 IA Stiffeners in Library Group Standard Library Custom Library _This list contains the Group Names of all Groups of Stiffeners available for this Stiffener type from the Library ShipRight FDA FD
99. dship Section Geometry Midship Section Type Location Outer Longitudinal Bulkheads Only Midship Section Geometr z Inner Longitudinal Bulkheads C Centreline Diltight Bulkhead C Centreline Swash Bulkhead Double Side Width 3 480 mm Struts C None Struts in Cargo Tank C Struts in Wing Cargo Tank Longitudinal Bhd Web Depth Inner Longitudinal Bhd to CL y F Wash Bulkhead Deck Web Depth Center Deck Web Depth Wing Strut CL Height above BL 14 250 mm Midship Section Midship Section Deck Geometry amp eee Ready _ShipRight FDA Cancel ok Newt gt gt 4 14 Midship Section Type 1 Pick the Midship Section Type tab if you are not already inside this tab In the Midship Section Type dialogue area pick from the options list the ship type that applies to the subject ship Ship type Outer Longitudinal Bulkheads Only Double side skins only Inner Longitudinal Bulkheads Double side skins and pair of inner longitudinal bulkheads Centreline Oiltight Bulkhead Double side skins and centreline oiltight longitudinal bulkhead Centreline Swash Bulkhead Double side skins and centreline swash non oiltight longitudinal bulkhead Enter the Double Side Width in the data entry box 2 If inner longitudinal bulkheads are present proceed to the Struts dialogue area Pick from the option list the type of struts used Struts are transverse structure connecting two inner longitudinal bulkheads or a longitudinal bulkhea
100. e Midship Section Geometry v C Rounded Gunwale Sheer Strake Upstand 150 mm No of Deck Knuckles 2 4 gt Y from CL mm Z from Deck mm a 1400 1 0 1395 Double Bottom Girders No of D B Girders VftomChmm Thicknessmm 0 17 0 2370 18 0 5690 13 5 ES 9010 12 0 ee 12330 13 0 Midship Section Geometry Deck Geometry amp D B Girders Side Stringers Ready ShipRight F DA Cancel OK Next gt gt 4 11 Midship Section Geometry Deck Geometry amp D B Girders i Pick the Deck Geometry amp D B Girders tab Choose the type of gunwale from the options list in the Deck Geometry dialogue area Provide the Rounded Gunwale Radius or the Sheer Strake Upstand depending on the type of gunwale chosen 2 Use the spin buttons in the Deck Geometry dialogue area to define the Number of Deck Knuckles One side of the ship is required to be defined starting from the centre line Enter the Y and Z coordinates of the knuckles in the data table The number or rows in the table is controlled by the spin buttons one row for each knuckle point The Y coordinate is measured outboard from the centreline The Z coordinate is measured upwards from the deck edge at side O Proceed to the Double Bottom Girders dialogue area The number of double bottom girders is controlled by the spin buttons One side of the ship is required to be defined starting from the centreline Enter the centreline offsets and thickness of
101. e Location drop down list choose the area where the midship section geometry is to be defined Three areas are listed e Midship Section Geometry e Cargo Hold Area Forward Bulkhead Geometry e Cargo Hold Area Aft Bulkhead Geometry Choose Midship Section Geometry first On completion of midship section geometry proceed to each of the following two locations in sequence The program prompts you if you want to copy the midship section geometry as a starting point for defining the other two areas See Step 4 3 Proceed to the Midship Section Geometry dialogue area and enter all requested data Only half breadths are required since the ship is assumed symmetric about centre line 4 Proceed to the Topside Tank dialogue area Enter all missing information used as guidance If there is no shelf plate enter shelf plate breadth as zero Lloyd s Register of Shipping Topside Tank Bottom above keel Hopper Side Tank Top above keel T T Vertical Inboard Side Topside Tank Shelf Plate Hopper Side Tank Shelf Plate The following diagram may be 25 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 D Proceed to the Hopper Side Tank dialogue area Enter the missing information If there is no shelf plate enter zero for breadth Step 2 Deck Geometry and Double Bottom Girders B ShipRight FDA Midship Section Geometry Deck Geometry Location Angled Gunwal
102. e Simulation Results To view the Service Profile Matrix for a particular heading speed and loading condition use the scroll bars below the relevant Heading Speed and Loading Condition labels The Display button must now be used to update the table with the correct values The Print button is disabled until the table has been updated Print The Print button will dump a copy of the current screen to the attached printer This facility is only available when the table is displaying the correct values Help Provides on line help as does the F1 function key OK Returns control to the main menu The table contains the probability values for each wave height and wave period The right hand column summates the probabilities for each wave height and the bottom line summates the probabilities for each wave period the bottom right hand cell box is the total value for the whole table The probability values in the table have been multiplied by a factor which is specified above the table as follows Probabilities are multiplied by either 1 000 or 1 000 000 Hence the probability values are in parts per 1 000 or 1 000 000 The total summated value for each table is affected by the probability option buttons The Total occurrence of this table value gives the percentage probability that the vessel will experience waves for this ship heading this ship speed and this loading condition during the lifetime of the specified trading pattern The displayed p
103. e used for defining Routes The three buttons to the left of the title boxes facilitate manipulation of the routes to be created ROUTES This button gives on line help Add Route This button enables a new route to be added to the database Del Route This button deletes the currently displayed route from the database Note the deleted Route will appear as Deleted in the Routes drop down list The first task is to enter the Route Title and List of Ports in the top panel Typically the Route Title includes details of the Route trade e g Tanker LNG Container etc The drop down list on the right of the ROUTES panel enables selection of the routes stored The description five characters maximum is the Route Reference and is important since it is used in the Trading Pattern input screen to identify the Routes to be used in the Voyage Simulation The currently displayed Route Reference can be changed simply by editing the displayed text 98 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 The Index scroll bar to the left of this drop down list enables scrolling through the stored routes The Total No of Routes stored is displayed for information purposes only The next stage is to add Passages to the route The middle two panels are for this purpose The buttons to the left of the main Passage table control the passage records Add Creates a new record after the highlighted row Insert
104. eated during a previous computation these are checked for consistency with the current project inout data Only the invalid link files are rebuilt for the new computation Stage 2 Short term and long term fatigue computation The SpecFDA solver progress is displayed in a separate window The window console reports on the progress of the computation after the initial link files reading phase On a 9OMHz Pentium PC the typical runtime duration for a double hull VLCC and a Cape Size bulk carrier is of the order of 3 4 hours and 5 7 hours respectively Lloyd s Register of Shipping 107 FDA Level 2 Software User Manual October 2002 Chapter 8 Section 1 CJ SpecFDA Solver Graphic1 oyd s Register of Shipping ShipRight FDA RootFDA TANKER SAMP rogram Files Lloyd s Register of Shipping ShipRight FDA RootFDA TANKER SAMP alts T 3 0 of Shipping ShipRight FDA RootFDA TANKER SAMP oyd s Register of Shipping ShipRight FDA RootFDA TANKER SAMP Running 8 2 Solver console window To abort a solver run select Exit from the File pull down menu on the window console Stage 3 Compilation of FDA results and input data On completion of the short term and long term fatigue computation the results database builder is initiated A window is displayed showing the progress in building the results database The results database contains the result data for the given FDA Option Set as well as the input data associated with the
105. end to printer Cancel Abort printing operation Close Exit print preview Note on paper size Printing on letter size is not recommended A4 or Legal size should be selected in your printer setup 4 1 3 Importing a project Projects created using older versions of ShioRight FDA should not be opened directly using Open Project Because of data format incompatibility a special facility is provided to convert the old format to the new format You are required to specify which version of the software was used whether it was version 1 1 Beta or versions 1 1 upto 1 5 Beta On completion of a successful import a new project is created IMPORTANT The following five specific ship data items have to be checked with care in order to ensure all data is recovered correctly ls Databases e Tripping Brackets Where tripping brackets have been defined make sure all the dimensions are present The current version of the software requires additional data fields e Soft Heel Details Where soft heels are used check that the dimensions are fully defined 2 Midship Section Info e Girders Side Stringers thickness Check these values 3 Bulk Carrier Tanker Framing e Ballast Tanks Make sure ballast tank information has been properly defined according to the software user manual 58 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 4 Midship Plating e Bilge Radius Plating Ensure there are
106. ent stiffeners e Sorted Fatigue Life e Plating Areas All Frames for the deficient plating areas e Performance Overview 134 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 10 Section 1 CHAPTER 10 FDA LEVEL 2 ACCEPTANCE CRITERIA Section 1 General E Section 1 General The Level 2 Fatigue Design Assessment is to be performed for a minimum design service life of 20 years Where requested a longer design service life can be specified The fatigue damage predictions are in association with a design S N curve that represents a probability of survival of 97 5 As a minimum the fatigue design assessment is to be performed using the 100A1 Fatigue Wave Environment for the design service life Where requested additional owner defined trading patterns can be considered For critical locations in way of cargo containment barrier e g inner bottom hopper sloping plate inner longitudinal bulkhead etc the fatigue damage index is to be less than 0 8 for a simulation duration equal to the required ship design life For critical locations elsewhere the fatigue damage index is to be less than 1 0 for a simulation duration equal to the required ship design service life Lloyd s Register of Shipping 135 FDA Level 2 Software User Manual October 2002 This page has intentionally been left blank 136 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002
107. er 2002 This page has intentionally been left blank 82 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 7 CHAPTER 7 VOYAGE SIMULATION Section 1 Solvers Section 2 View menu Section 3 Options menu Section 4 Voyage simulation limits The purpose of the Voyage Simulation is to predict the probability of the ship encountering a particular sea state for a range of ship speed and wave heading for each loading condition The probabilities for a range of sea states actually wave height wave period combinations are predicted and stored in the Service Profile Matrix he FDA system uses these probabilities to derive the number of stress cycles experienced by the ship s structure for each ship speed heading loading condition and sea state The Voyage Simulation analysis program is capable of calculating the Service Profile Matrix for normal sailing of passages i e Sailing from port A to port B and also for Floating Storage Unit Systems Both types of analysis can be incorporated into one Trading Pattern A passage is defined by a set of waypoints between two destinations A route is a collection of a passages that make up a round trip A trading pattern is defined by the proportion of time spent on different routes throughout the service life of the ship In order to calculate the probabilities the voyage simulation system uses the following information e Ship dimensions and loading condition d
108. er 9 Make note of the minimum S N curves required to satisfy a design life of 20 years Modify the design of stiffener end connection under Chapter 5 Midship Section Stiffener Details Step 1 Rerun the FDA S N Curve Expert Step 2 until the required minimum S N curve is achieved To assist the user in designing a more fatigue resistant end connection see Section 2 1 Structural Detail Design Guide Rerun Steps 1 to 8 as many times as necessary to achieve the required design life These steps are summarised in the flow chart in Fig 1 2 1 Any design is by nature an iterative process With experience the user can achieve the required design fatigue life in fewer iterations Lloyd s Register of Shipping 5 FDA Level 2 Software User Manual October 2002 Chapter 1 Section 2 Button on ShipRight FDA Front End Initial Design ShipRight FDA Project Manager STEP 1 Ship Data see Ch 4 ShipRight FDA Project Manager STEP 2 a orive see Ch 4 Expert Wave Induced Loads amp Motions STEP 3 Wave Induced see Ch 5 Loads amp Motions see Ch 6 Response STEP 8 See Notes Voyage Simulation STEP 5 Voyage see Ch 7 Simulation Short Term amp Long Term Fatigue STEP 6 Sor amp Long Computation Term Fatigue see Ch 8 Computation STEP 7 Fatigue Fatigue Performance Analyser Performance see Ch 9 Analyser Performance Satisfactory Yes Final Design Fig 1 2 1 Design procedure using ShipRight FDA NOTES l Fatigue damage c
109. es The structural response at each hot spot location is computed in terms of the influence coefficients associated with each load component applied to the structural member and the relevant geometrical stress concentration factor The procedure allows the response of the primary structure to be included in the structural response model by computing the relative deflection of the primary structure from a Finite Element grillage model under the action of hydrodynamic wave pressure and the cargo water ballast inertia pressure The short term total stress response in irregular waves is computed from the structural response influence coefficients the regular wave load amplitudes and phase angles and the wave energy spectrum The stress range is obtained by combining the structural response arising from each load component taking into account the relative phase difference Where non linear and or non harmonic behaviour of the load component exists a special time domain simulation method is applied to obtain the resulting stress range For every seastate under consideration the fatigue damage rate and stress reversal frequency are calculated from the short term stress response statistics and the fatigue strength characteristics of the structural detail Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 1 Section 1 e Since fatigue damage is a cumulative process and the long term stress range distribution is a fun
110. ession The following table provides a cross reference between the table and graphs O w f e S o Deterministic Fatigue Performance Midship Section Longitudinal Deterministic Midship Section Min Max all Computed Longitudinal Deterministic 2 3 x Longitudinal Distribution 3 3 Performance by Stiffener Deterministic Fatigue Performance Plating Areas 132 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Section 5 Bi Section 5 Creating a FDA Report Upon selecting the File Printing menu bar item the FDA Results Summary Report Builder window is displayed FDA Results Summary Report Builder a x iek Areas by Plating Areas All Frames Midship Section Performance Overview ate Frame Longitudinal Deterministic Longitudinal Distribution Report Template Min Fatigue Life Performance By Stiffener Sorted Fatigue Life Select Reports To Print Summary Report 1 z j Cover Page New Delete Save Save As MV Table Of Contents Select the New button to create a new report template and then select the reports you wish to print Set options for the reports you V Voyage Simulation wish to print using the Next Back buttons or by clicking on the appropriate tab V Min Fatigue Life To print an individual report use the Preview Print Section buttons to print all of your selection use the Print All Button M Longitudinal Deterministic Report Templates may be saved for later u
111. etail double click on that detail This can also be done under the View pull down menu The Utility pull down menu offers the option to copy different details to the pasteboard for use by other Windows applications 1 3 8 Graph tool bar A tool bar with icon buttons is displayed in the various 2 D and 3 D graphs in the results viewer This tool bar allows control of secondary options like font size line colour etc which has more to do with personal taste The user need not alter these secondary options unless he she is confident about using the program 1 4 ShipRight FDA Results data filters To facilitate analysis of the fatigue performance of a relatively large number of critical locations data filters have been provided A description of the data filters is given in the following sections Lloyd s Register of Shipping 17 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 1 1 4 1 Transverse frames data filtering To reduce the number of frames being displayed and or narrow down the fatigue results by transverse frames data filters may be applied Transverse Frame Data Filtering is available either through a drop down list or the Frame Options menu item in the menu bar The available transverse frames data filters are as follows All Framings Z Transverse Framings Bulkhead Framing Transverse Fwd of Bulkheads Transverse Aft of Bulkheads Odd Numbered Holds Even Numbered Holds 9 10 Frame filtering
112. etails entered via the Project Manager e Ship motion RAO s Response Amplitude Operators computed by the Wave Induced Loads and Motions module e Maximum ship speed for each sea state ship heading loading condition This is calculated using the SolverC option in the Voyage Simulation module e he Service Profile Matrix is then calculated using the SolverV option The Voyage Simulation module is activated by the Voyage Simulation button on the main menu This reveals a menu bar with the following options SolverC This executes the Seakeeping Criteria Analysis using the Default seakeeping criteria or a modified criteria set if this has been defined using Options pull down menu facilities SolverV This executes the Voyage Simulation Analysis using the Default Trading Pattern unless a modified Trading Pattern has been defined using the Options pull down menu facilities View This pull down menu allows the Trading Pattern for the Voyage Simulation and the results from the Solver calculations to be displayed and printed Options This pull down menu gives access to input screens allowing the user to specify special seakeeping criteria and or special trading patterns for the FDA analysis Lloyd s Register of Shipping 83 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 1 Exit This returns to the main menu Help This provides On line Help information The F1 function key will call up the relevant helo screen at any st
113. eters in the data display control table 0 0400 Max Value 0 3931 Plat From 0 step Yalue 0 0500 Plot To 0 2500 Format Axi 0 0000 9 17 Data display control table 2 1 2 Graph A typical Fatigue Performance Criteria distribution bar graph is shown below For the given filtered data the average fatigue performance criteria the standard deviation and the coefficient of variation are given ShipRight FDA Results iewer Performance Overview File Edit u E SEJE EEN em 3z we ga EE 20 Years Fatigue Damage Index All Framings 0 0000 0 0500 0 0500 0 1000 0 1000 0 1500 0 1500 0 2000 0 2000 0 2500 For this Filter Average 0 1035 Standard Deviation 0 0718 Coefficient of Variation 0 6937 Graph Options i Ready ShipRight FDA Deterministic Fatigue Life for 20 00 Years Service 9 18 Graph Lloyd s Register of Shipping 121 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 2 2 2 Deterministic Fatigue Performance Summary Stiffener Critical location 1 Fatigue performance criteria Critical location 2 Fatigue performance criteria Min Max of Port and Starboard Min Max of Port Min Max of Starboard Frame Plating area Stiffener Critical location The Deterministic Fatigue Performance Summary table enables the display of a transverse frame plating area and ship side view of the fatigue performance criteria for the given FDA Options Set This dis
114. eturn to the ShipRight FDA Front End choose Exit on the menu bar R Section 1 Executing solvers Wave Induced Motions Solver Phase Angle Surge DT s Sway 100 Heave MA Se Rll ee Pitch Yaw SavingTo 0 S hip Ri g it F DA Wave Induced Loads and Motions Solver 5 2 Phase Angle To execute a solver select the item from the menu bar or from the control panel hypertext SolverD requires SolverA and SolverP to be executed first Calling SolverD before the other solvers have been executed automatically invokes SolverA and SolverP All solvers must be executed While the solvers are running a status window informs the user of the progress for each motion or type of load After completion the status window closes automatically Computation time depends on the machine specification Typically running all solvers sequentially on a networked 9OMHz Pentium takes approximately 15 minutes 74 Lloyd s Register of Shipping E Section 2 Viewing analysis results FDA Level 2 Software User Manual October 2002 Chapter 5 Section 2 From the View RAO pull down menu pick Motions and Global Loads RAO Results can be viewed either graphically or in a tabular format For graphical results pick the Graph tab for tabular results pick the Table tab 2 1 Viewing motions RAO 2 1 1 Graph view P ShipRight FDA Motions amp Loads Motions amp Loads Pitch Lo
115. fiwa E Stiffener ID 350 0 x 100 0 x 11 0 717 0 1A Database 1 Display Current Values M HT32 hd Database mi _ frente Sieh rita ie Silene Mai 0 66 352 0 10 0 96 0 220T 2 66 96 352 0 10 0 96 0 14 0T 352 0 x 10 0 96 0 22 0T 352 0 10 0 96 0 14 0T 352 0 x 10 0 96 0 22 0T 352 0 x 10 0 96 0 x 22 0 T 352 0 x 10 0 96 0 14 0T 352 0 x 10 0 96 0 x 22 0 T Eza 4 Zs g 3 352 0 10 0 96 0 14 0T EA EE End Connection Details Stiffener Details Applying to 14 4 1 ShipRight FDA Cancel ok New 4 38 Stiffener Details Lloyd s Register of Shipping 49 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 The basic steps are 1 Select the plating area where stiffener s are to be modified en Select the stiffener s to change or to have current values displayed i Select the easiest method to introduce the change either variation by hold or by user defined variation A Select the required stiffener section tyoe and material from the list O Assign the section type and material to the selected extent of the stiffener 6 Applying the changes to the stiffener eZ Accept the change or reject the change Step 1 Select the plating area Select from the Midship Section Plating Area drop down list the plating area where the stiffener is located Step 2 Select the stiffener to change Select the desired stiffener from the Stiffener ID list bo
116. formance by Stiffener End Conner 0250 0016 N RH T3 0015 0250x0016 N RH T3 0015 0250 0016 N RH T3 0015 0250 0016 N RH T3 0015 0250 0016 N RH T3 0015 0250 0016 N RH T3 0015 0250 0016 N RH T3 0015 0250 0016 N RH T3 0015 0250 0016 N RH T3 0015 0250 0016 N RH T3 0015 SPAN R N RH T 3 01 AY Sorted Fatigue Life The item 0 2072 is repeated 1 times in 17 rows 5 9 ShipRight FDA Deterministic Fatigue Life for 20 00 Years Service 9 21 Performance by Stiffener Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Section 2 2 3 3 Sorted Fatigue Life This table permits display of a sorted list of the minimum fatigue performance criteria for all activated stiffeners plating areas and frames The number of items and the range of the Fatigue Performance criteria may be controlled via the Grid Options menu bar item Set Minimum Fatigue Life Lower cut off of fatigue life for listing Set Maximum Fatigue Life Upper cut off of fatigue life for listing Max Rows Maximum number of rows in table Fatigue Performance Criteria Min Fatigue performance criteria frame Min Fatigue performance criteria plating area Min Fatigue performance criteria stiffener Min Fatigue performance criteria critical location Min Fatigue performance criteria ship side Min Allowable LRSN Frame Plating area Stiffener Critical location ShipRight FDA Results iewer Longitudinal Dete
117. four buttons to the left of the title boxes facilitate manipulation of the passages to be created Add Pass This button clears all data on the screen and enables a NEW passage to be created Delete Pass his button deletes the currently displayed passage It is not possible nor advisable to delete a MASTER Passage using the Delete button Copy Pass This button copies the contents of the displayed passage to a NEW passage which is added to the list of passages The NEW passage becomes the current passage Save Pass This button saves the displayed passage The passage data also contains a reference to a Wave Area Map to Use his enables data other than the standard worldwide BMT Global Wave statistics to be used Additional choices are the BMT European Wave data or User defined wave data Several sets of User Defined data can be created Contact the FDA Helpline for more details on the specification of user defined wave statistics The Current Waypoint is selected by clicking on the appropriate waypoint record in the waypoint table The value clicked in the table becomes the current data entry box so the user can update this value immediately Lloyd s Register of Shipping 101 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 The waypoints that define the passage can be amended added or deleted using the lower left panel The buttons to the bottom left of this panel enable control of the waypoints created Add Create
118. gue Life for 20 00 Years Service 9 31 Longitudinal Distribution This is useful to identify areas where the fatigue acceptance criterion is not met and therefore groups of frames where reinforcement is required This screen may also assist the user in determining the reduced FDA Option set for which he she wishes to run after suitable detail design improvements m Section 4 Using the ShipRight FDA Results Viewer 4 1 ShipRight FDA Results Viewer roadmap To assist the user in identifying the critical areas and sorting through the fatigue performance data the following roadmap is provided The user is encouraged to generate his her own FDA results analysis procedure based on these guidelines It is recommended that the analysis of the results should be performed using the Fatigue Damage Index fatigue performance criterion since it represents the fatigue damage reserve usage of each structural component and is expressed in a normalised format The Fatigue Life may lead to misleading interpretation as the simulation period equivalent to the ship design does not correspond to the acceptance criteria design life based on the in service period or period under which the ship is subject to cyclic loading The following route might help expedite results viewing Lloyd s Register of Shipping 131 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 4 1 Display FDA Results Performance Overview to gain an overall insight in the fa
119. h and roll are given as follows ye 0f X k Wry 8 g O Ve OP Y a Wty 0 g o Ze WE Z xk 0 y Since for liquid cargoes mass forces arise from quasi hydrostatic pressure variations due to small accelerations the coupling effect can be taken into account as follows Pi XyMoZot P o k x Yo yky t o 2 72 where x y z are the coordinates of the point of accelerations assumed at the centroid of the subject tank Lloyd s Register of Shipping 139 FDA Level 2 Software User Manual October 2002 Appendix A Sections 2 amp 3 2 1 Assumptions and limitation The parametric formulation of the wave induced loads and motions is applicable to ships with parameters within the following ranges Lop 150 400 metres L B 5 00 7 00 C 0 60 0 85 C lt 0 20 W Froude number lt 0 20 Following the conventions used in the program a negative number denotes starboard L Section 3 S N curve expert In order to ensure consistency in the application of the ShioRight FDA procedure the selection of the representative fatigue strength capability is performed automatically by the S N curve expert The S N curve expert system identifies the fatigue critical locations and determines a representative S N curve based on the description of the local geometry of the end connection The S N curve expert database is based on S N curves from fatigue design codes such as BS 5400 IIW and other relevant S N curves ava
120. hE 446 1 PASE IT 1a 146 BAI SEW AED ZeD 1120 LAA KAREM BPE AMED OPE OO BE 4410 EIA AAEH SEH AME AmE FRE TEM K7 EMEN i E ri ahi at EN ee a EA EA Ball EA Bal A data table is displayed with three columns one for each bending moment Use the spin buttons to vary the ship heading speed loading condition number and position along the ship s length 76 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 5 Section 2 2 3 Viewing hydrodynamic pressure RAO 2 3 1 Graph view Hydrodynamic Wave Pressure 100 00 Degrees 100 00 s LC 1 Hydrodynamic Wave Pressure Amplitude Nim2 m 60000 55000 50000 45000 B E alt 40000 35000 Location 30000 25000 Heading 100 ajel Deg Sime Speed m gt Ns ee B aes a sooo Section 0 00 a gt 0 i i 01 0 2 03 0405 06 0 7 08 09 1 01 1 1 21 3 Wave Frequency Rad s lt ShipRight FDA 5 7 Hydrodynamic Pressure Graph The hydrodynamic pressure is calculated for the immersed cross sections along the length of the ship at 12 equal spaced positions along the wetted surface of the ship from the centreline to the waterline for both port and starboard respectively To select the position at which the pressure is to be plotted use the Location spin button The wave pressure Is given in Newtons per square metre per unit wave amplitude 2 3 2 Table view
121. hapter 9 Section 1 The following steps describe the procedure 1 Select the table area to be copied by clicking and dragging Either select Edit Copy Grid Data to Clipboard or press Ctrl C keys together This puts the contents of the high lighted area in the Windows Clipboard Shap Riyht FDA Resulls Viewer Deterministic Fatigue Performance Su ry Fle ta Fabgue Damage irris SUMAI EN AH 130116800 S00 NAH TOM Su18 80 0000 SOSOO01EN AM T 3200116000000 SUGSOM0016 N AH 1 3 001 S916 80 0000 SPOSRANNE N RH TOM w186 BOND SOCSOOOIEN AH T 2001S 16 90 0000 SUZSOU1S N AH 1 3 001 S016 80 0000 S CSRON1G NAH TOM ees Boon SOCSOO01GN AH T20015 1690 0000 SUZSO0016 N AH 1 3 001116800000 S0CSRN1E NAH TOME 80000 S0CSO0016 N AH T3 001Sx16 90 0000 SUZSOMO016 N AH 13 001Se16 80 0000 ot Pod Fate Lie The tem D 1574 is repeated 1 times in 27 rows 3 7 ShipRight FDA Deterministic Fatigue Lite foe 20 00 Year Service 9 5 Copy Grid Data 2 Pressing Crtl V within a word processing document copies the selected data as shown below Alternatively choose the Edit Paste option from your application s menu bar 0 1108 0 1008 300 0 x 10 0 100 0 x 16 0 T HT32 0 1118 0 1017 300 0 x 10 0 100 0 x 16 0 T HT32 0 1143 0 1040 300 0 x 10 0 100 0 x 16 0 T HT32 0 1158 0 1054 300 0 x 10 0 100 0 x 16 0 T HT32 0 1174 0 1069 300 0 x 10 0 100 0 x 16 0 T HT32 0 1213 0 1104 300 0 x 10 0 100 0 x 16 0 T HT32 0 1234 0 1124 300 0 x
122. he Check Type Consequently when the Check Type is altered the titles of the data entry boxes are updated and only the relevant fields are available for data entry The following Check Types are available 1 RMS Prob Max Checks whether the calculated RMS value of motion type Criteria Type is greater than the Limiting Value If a TIME value is specified the program calculates the Probable Maximum value in a period of TIME hours 2 Occurrence Check whether the calculated percentage occurrence of the motion value Occurrence of Value is greater than the Occurrence value The Occurrence appears in the VALUE column of the criteria table and the Occurrence of Value in the OCCUR column 3 No of Events Check whether the calculated number of events of magnitude Occurrence of Value is greater than the value specified by the No of Events value A time value of three hours is used as default if no value is specified for TIME The No of Events appears in the VALUE column of the criteria table 4 Factored RMS Check whether the calculated Factored RMS value is greater than the Limiting Value The factor to apply to the RMS value is given by the FACTOR value e g a Factor of 2 0 implies the Limiting value is a Significant value If a TIME value is specified then it calculates the Probable Maximum factored value in a period of TIME hours useful only for slamming loads The FACTOR appears in the OCCUR column of the criteria table The required units is re
123. he Ship Event Analysis SEA procedure which covers full Scale stress monitoring of the ship whilst in service This could permit correlation with the theoretical analysis and enable a further update to the predicted fatigue life of the structural details in real time This could provide the opportunity for ship s staff to reduce the fatigue damage rate through appropriate actions e g change of ship s speed or heading This full scale monitoring could be applied to those structural details most likely to be affected by fatigue The possible links between the various LR procedures are illustrated in Fig 1 1 2 Further information on the SEA procedure is provided in LR s Provisional Rules for the Classification of Hull Surveillance Systems FATIGUE DIRECT CALCULATION PROCEDURE DESIGN ANALYSIS STRUCTURAL DETAIL FATIGUE PERFORMANCE HULL CONDITION DESIGN GUIDE MONITORING PROCEDURE CONSTRUCTION EVENT ANALYSIS MONITORING PROCEDURE PROCEDURE FATIGUE CONTROL PLAN Fig 1 1 2 Links between relevant ShipRight procedures 1 3 Pre Contract Consultation It is essential that the Builder in conjunction with LR consults with the Owner in order to clarify the Owner s requirements in respect of FDA Notation trading pattern and service life at the earliest possible opportunity in the pre contract process 4 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 1 Section 2 Section 2 How to perform
124. he data in all the blank data entry boxes for each of the loading conditions These are self explanatory GM is the transverse metacentric height Still Water Bending Moment is the maximum value for this condition For preliminary analysis the user has the option to allow the program to calculate approximate values based on the forward and aft perpendicular draughts and the ship characteristics For more accurate analysis supply exact values Most of these values can be obtained from the ship loading conditions manual For default calculations enter appropriate values in the Draught Forward Perp and Draught Aft Perp data entry boxes as a minimum starting point From the Default Calculation options list choose Calculate Blanks to calculate the missing data alone or Calculate All to calculate all data overwriting any user supplied values Click the button to calculate Lloyd s Register of Shipping 2 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 3 2 2 Loading conditions for Tanker T ShipRight FDA Loading Condition Data Loading Condition Title Homo Load Departure Draught Forward Perp R 2 300 metres Default Calculation Draught Aft Perp R 22500 metres Calculate Blanks LWL 314 000 metres C Calculate All VCG above Baseline 17 290 metres Calculate LCG from Midship aft fwd 10 210 retres GM es vibes R Required Values Displacement 342916 800 tonnes Still Water Bending Moment R 41
125. heck A table of the data check reveals where the problem areas are ShipRight FDA Data alidation amp Reporting Check Input for Missing Material Stiffeners amp End Connections Print Ok Frame a __ Ene Connector StiffenerID Material ID lt 1 J40 Outer Bottom 40 Side Shell 11 2 6 4 40 Side Shell 18 3 4 0 2 140 Outer Bottom gt f 0 1 1 4 40 Data Validation and Reporting A zero in any of the columns indicates missing data To get a hardcopy of the table hit the Print button OK allows you to return to the Project Manager Control Panel to access Midship Section Stiffener Details to enter the missing data Until the missing data has been provided by the user the S N Curve Expert Analysis option will remain unavailable Lloyd s Register of Shipping 51 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 NOTE Automatic data checking is performed at different stages of a FDA analysis The user will see the same warning message However depending on where checking is performed a different data check results table is displayed 3 10 2 How to perform an S N Curve Expert Analysis Based on each stiffener end connection combination ShioRight FDA automatically assigns an S N curve to each of the critical locations LR Reference S N curve is a two slope S N Curve modified as per the Haibach correction at 107 stress cycles with an inverse slope varying from three to five
126. ht FDA Project Manager FDA Step 1 2 See Chapter 1 2 Wave Induced Loads and Motions FDA Step 3 Structural Response FDA Step 4 Voyage Simulation FDA Step 5 Long Term and Short Term Fatigue Computation FDA Step 6 Fatigue Performance Analyser FDA Step 7 Structural Detail Design Guide FDA Step 1 Reference Tool ShipRight FDA Batch Mode FDA Steps 3 to 6 Program Options Global program settings Located below the buttons is a display area showing information concerning the currently opened project No information is displayed if no project is currently opened Located below the information display area is a status error bar It shows the hard disk location of the currently opened project To find out about ShioRight FDA select the About option on the menu bar A drop down menu is displayed with three further options ShipRight FDA Enquire about software and system settings e g memory Current User Enquire about user information expiry date etc FDA Administrator How to contact FDA administrator s on your site To exit ShioRight FDA pick the Exit option on the menu bar w Section 2 ShipRight FDA Batch Mode Selecting the ShipRight FDA Batch Mode button will activate the solvers for Steps 3 to 6 in an automatic sequence This button cannot be activated until all the required data in Project Manager is complete NOTE The novice user is encouraged to perform each step interactively in order to get an appreciation of the purpose
127. ia is loaded automatically if no Local criteria exist To use the Default criteria click on the drop down list at the bottom of the screen headed Select Criteria Database here are two options either Local Criteria i e customised data which has been previously saved for this project or Master Criteria Selection of the Master Criteria overwrites the local criteria but before overwriting a warning message will be issued The seakeeping criteria consist of two lines of Titles and a list of criteria records Each criterion record consists of a Description Criteria Type Limiting Value and a Check Type Other parameters may be necessary depending on the Criteria and Check Types These records are displayed in the criteria table Help Will supply on line details of each Criteria Type and Check Type The buttons to the left of the Criteria table enable manipulation of the criteria records Add Creates a new record after the highlighted row Insert Inserts a new record before the highlighted row Delete Removes the highlighted row As records are added or deleted the Total No of Criteria in the upper panel is updated automatically The panel above the criteria table enables values in the table to be entered or amended This panel displays the contents of the currently highlighted criteria record in the table The current record can be changed by any of the following e Clicking on the scroll bar then clicking on the required input box e Ch
128. ides guidance on preferred detail design arrangements Please refer to this document for a more extensive description of end connections in general A concise pictorial description of some typical arrangements is given here for quick reference Flat Bar Stiffener with Soft Toe Soft Toe Radius Backing Bracket Soft Toe Tripping Bracket Soft Heel Flat Bar Stiffener with Flange Soft Toe Straight Backing Bracket Straight Toe Bracket Watertight Collar 64 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 4 3 6 End connection reference code Because of the complexity of typical end connections a special code is used for reference in ShioRight FDA as follows It should be noted that this code is not unique as they contain data only for the main significant geometrical features of the end connection S 0150 x 0020 O SH T2 0100 x 20 B2 0400 x 20 Thickness Of Bracket Arm Length Radius BO No Backing Bracket B1 Straight Backing Bracket B2 Straight Radiused Toe bracket B3 Radius Backing Bracket Thickness Of Bracket Soft Toe Arm Length Radius TO Toe Side Straight Flat Bar Tripping Bracket T1 Toe Side Straight Bracket T2 Toe Side Straight Radiused Toe Bracket T3 Toe Side Radius Bracket NH No Heel RH Regula
129. ife for 20 00 Years Service 9 29 All Frames There are various options available to manipulate the plot and the data Most of the options under the Graph Options pull down menu are described in 1 3 4 The Rotation Tool allows the viewing direction of the plot to be dynamically changed Drag the horizontal and vertical scroll bars until the desired view is obtained Close the rotation tool and the graph is replotted to this new view Rotate a obg 9 30 Rotate The Plot Options pull down menu allows various options to truncate the plot data To truncate the frames select User Defined Frame Range To truncate the the fatigue performance criteria select Chop Data 130 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Sections 3 amp 4 3 3 Longitudinal Distribution Plating Area Stiffener Fatigue performance criteria value Frame Plating area Stiffener Critical location The Longitudinal Distribution graph permits the user to visualise the fatigue performance criteria along a selected stiffener for a given plating area ShipRight FDA Results iewer Longitudinal Distribution File Graph Options Frame Options Outer Bottom Poono ba KG 20 Years Fatigue Damage Index 4 20 Years Fatigue Damage Index Outer Bottom All Framings Stiff 13 2 2 Stdb Crit1 E Stbd Crit F Por Crit1 Port Crit2 Frame Number Ready ShipRight FDA Deterministic Fati
130. ilable from the current literature The S N curve expert database also includes S N curves derived form comparative fatigue analysis based on actual fatigue damage to ship structural details as well as S N curves established by LR through ongoing large scale model testing of typical ship structural details carried out by the Krylov Shipbuilding Research Institute in the Russian Federation The S N curve format used for the ShioRight FDA procedure is as follows NAO _ a K AO Ao lt So Where N number of cycles to failure Ao effective applied nominal stress range m inverse slope of the S N curve S stress range cut off value Haibach Correction 107 m inverse slope of the S N curve below the stress range cut off value K fatigue parameter The S N curve expert generates S N curves for each geometry based on the hot spot stress approach and the associated geometrical stress concentration for axial loading Ke k K Ky K where Kf steel welded material fatigue parameter Ky geometrical stress concentration factor at the critical location under axial loading Ky weld angle stress concentration K misalignment stress concentration factor 140 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Appendix A Sections 3 amp 4 In the ShioRight FDA procedure it is assumed that tensile residual stresses equal to yield are present at the critical location The effective stress range
131. inaccuracy in any information or advice given in any way by or on behalf of the LR Group even if held to amount to a breach of warranty Document History June 1994 v1 18 Tanker Version January 1995 v1 58 Update May 1996 v2 08 Bulk Carrier Version October 2002 v2 5 Update Nevertheless if the Client uses the LR Group s services or relies on any information or advice given by or on behalf of the LR Group and as a result suffers loss damage or expense that is proved to have been caused by any negligent act omission or error of the LR Group or any negligent inaccuracy in information or advice given by or on behalf of the LR Group then the LR Group entity providing the service information or advice will pay compensation to the Client for its proved loss up to but not exceeding the amount of the fee if any charged by the LR Group entity for that particular service information or advice Notwithstanding the previous clause the LR Group will not be liable for any loss of profit loss of contract loss of user or any indirect or consequential loss damage or expense sustained by any person caused by any act omission or error or caused by any inaccuracy in any information or advice given in any way by or on behalf of the LR Group No LR Group entity will be liable or responsible in negligence or otherwise to any person not a party to the agreement pursuant to which any certificate statement data or report is issued b
132. ing Bkt Thickness data entry box Repeat procedure for every new end connection type 8 The Delete button removes the currently selected end connection from the project database The Copy button duplicates the end connection The Delete All button removes all the end connections from the project database The Sort button will sort the database according to increasing frame stiffener depth tripping bracket base length The Prev and Next buttons let you scroll through the project database Lloyd s Register of Shipping 67 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 9 The SDDGuide button brings up the Structural Detail Design Guide described in Chapter 1 Section 2 1 To view the end connection in true scale pick the Scaled option in the Draw Mode option list The default is Schematic mode 4 3 8 Creating your own end connection library The procedure for creating a customised end connection library group is identical to that for stiffeners This is done via the Library button See the Section on Creating your own Stiffener Library which has been described earlier and replace every reference to stiffener with end connection 4 3 9 Material Database ShipRightFDA Material Database i Material Description Yield T S Ultimate Add N mm2 les H 320 00 400 00 2 HT36 360 00 450 00 Delete MILD STEEL 240 00 300 00 S 1pRight F DA Cancel OK 4 59 Material Database The ma
133. ipping ShipRight FDA archive The FDA Root Directory should point to where the main executables e g rightfda exe are located The Error Log Path determines where the error log file FDERRLOG TXT is created see also 3 2 2 Errors and Warnings The Project Archive Path determines where to look for and or create an archived project IMPORTANT NOTE Projects should not be located on a compressed drive The program will not see a project if it is compressed If you need to have a compressed drive to see any FDA projects you must uncompress the root of the project directories and all sub directories Lloyd s Register of Shipping 15 FDA Level 2 Software User Manual October 2002 Chapter 3 Section 3 3 2 User Preferences ShipRight FDA Program Options Options Errors and Warnings NMV Save New Settings on Exit E osema fi ies Reload Last Project on Startup iV Warn on Common Errors Maximise Sizeable Windows Data Paths Ready ShipRight FDA 3 3 User Preferences There are three dialogue areas under User Preferences Options Errors and Warnings and Processor Type 3 2 1 Options Save New Settings on Exit Save current global settings on exit so they become the default next time Yes Reload Last Project on Startup Automatically open the last project when starting FDA No Validate all Input Data checking for all input Yes Maximise Sizeable Windows Use maximum window size allowable No 3 2 2 Errors a
134. istical data of cargo exporting and importing Bulk carriers are categorised into three groups based on their size which include Capesize bulk carrier Panamax bulk carrier and Handy size bulk carrier Trading patterns for each ship group which contain a number of trading routes are derived based on statistical data of cargo exporting and importing For each trading route it is assumed that a ship firstly sails from the importing port area to the exporting port area in ballast and then returns to the importing port area fully loaded It is noted that the importing port area and exporting port area for each route are representative main locations of the exporting and importing regions Ei Section 2 100A1 Fatigue Wave Environment world wide trading patterns for different ship types The trading patterns have been split up into the three following tables for ease of use and identification e Table B 1 100A1 fatigue wave environment world wide trading patterns for crude oil tankers e Table B 2 100A1 fatigue wave environment world wide trading patterns for product oil tankers e Table B 3 100A1 fatigue wave environment world wide trading patterns for bulk carriers Lloyd s Register of Shipping 147 FDA Level 2 Software User Manual October 2002 Appendix B Section 2 Table B 1 100A1 fatigue wave environment world wide trading patterns for crude oil tankers Trading Route ee pang Route O VLCC crude oil tanker 200 000 d
135. iven in the Details dialogue area on the right hand side of the dialogue screen Each results file can be readily identified by the following entry e the Results File Title which may be edited when the result file is opened e the Original Project Name e the Computation Date e the original FDA Options Title selected for the current computation ShipRight FDA Results Yiewer Select FDA Result Eile FDA Master Directory C PROGRAM FILES SLLOYD S REGISTER OF SHIPPINGSSHIPRI ROOTFDA Projects Available l apesize Bulk Carrier Test Ship Double Hull LCC Test Ship V2 0 Beta A Details Results File Title Original Project Name Double Hull LCC Test Ship V2 0 Beta Project Revision 1 002 Directory Path Result Files Available C Program Files RESULTS Computation Date 20 01 2003 14 58 FDA0004 MDB FDA Option Delete Open ShipRight FDA 9 1 FDA Results Viewer Lloyd s Register of Shipping 111 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 1 A results file may be opened by double clicking the file or clicking the Open Button A Delete button is available to remove the redundant results files if required 1 1 ShipRight FDA Results Viewer Upon selection of a results file a progress window is displayed to inform the user that the results file data is being loaded On completion of the loading process the ShipRight FDA Results Viewer window screen is displayed There are two t
136. iwan Japan Yokohama Far East Taiwan W Europe Rotterdam Japan Yokohama Japan Yokohama Far East Taiwan W Europe Rotterdam Far East Taiwan W Europe Rotterdam W Europe Rotterdam Japan Yokohama Far East Shanghai W Europe Rotterdam Japan Yokohama Far East Taiwan Japan Yokohama Far East Taiwan W Europe Rotterdam Japan Yokohama Japan Yokohama Far East Taiwan W Europe Rotterdam Far East Taiwan W Europe Rotterdam Far East Taiwan W Europe Rotterdam W Europe Rotterdam W Africa Lagos Far East Taiwan via Panama Japan Yokohama Japan Yokohama USA New Orleans W Europe Rotterdam Far East Taiwan Japan Yokohama Japan Yokohama Japan Yokohama W Europe Rotterdam W Europe Rotterdam Japan Yokohama Far East Taiwan W Europe Rotterdam Latin America Santos Brazil Japan Yokohama USA Los Angeles USA Baltimore W Europe Rotterdam Latin America Rosario Argentina Asia Bombay India S Asia Jakarta Indonesia Lloyd s Register of Shipping SDIS Feedback Form Local office Version Date submitted Platform 95 98 ME 2000 NT Contact number Feedback L Program Crash LJ Program Error LJ Rule Calculation LJ Installation category tick L Suggestion C Help Text L Documentation LI To be noted Location of Error use tree structure e g Transverse Section
137. ject Manager Control Panel Project Date Shiptitle Yard Dwg Shipbuilder Initials Rev C PROGRAM FILES SAOOTFDA LA ADD ASG ShipAight Strategic Research amp Development 4 1 Project Manager Control Panel If you are creating a new project read Section 4 1 If you are opening an existing project read Section 4 2 After a project has been defined proceed to Section 3 Project Manager Control Panel For more advanced file operations see Section on Menu Bar Lloyd s Register of Shipping 17 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 1 C Section 1 Creating a new project To create a new project select the icon or choose the New Project option under the Project pull down menu 1 1 Project Details A dialogue screen is displayed There are two tabs on the dialogue screen Enter all the requested information in the data entry boxes for the Project Details tab Pick either Double Hull Tanker or Bulk Carrier from the Ship Type drop down list The Project Directory is automatically determined by the program The Date is automatically determined by the program ShipRight FDA Open existing Project Project Title FOA Capesize Bulk Carrier Test Ship ShipT ppe Ship Hame Shipbuilder Yard Revizion f Drawing Initials Project Directory Project Details Project Notes C4Program Files ahipRight FOARootF D4 ShipRight FDA wa x 4 2 Create New
138. lay IMPORTANT NOTE Make sure the last stiffener in the plating area does not lie outside the width of the plate 44 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 2 Defining stiffener properties Having defined the stiffener locations the next step is to define the stiffener properties The ShioRight FDA software comes with various libraries of standard stiffeners These can be added to the project database Alternatively the user can create his her own database of stiffener section types material and end connection details See 4 3 on how to create a project database ShipRight FDA End Connection Primary Builder Midship Section Plating Area Transverse Frame Type Quter Bottom F5 Transverse Frame F9 a 7 Select Stiffener Specification ID of First Stiffener 1 Inverted Ds Apply Number of Stiffener Groups 5 F6 E M 350 0 x 100 0 x 11 0 17 014 v _ Database Current Group Number 1 F7 Vv HT32 Database Stiffener Offset Dimension 930 mm iv N0000x0000 N NH T 0 0000x00 B0 0000x00 6 7 Database Stiffener Spacing 930 mm Stiffener ID Convention Increasing ID Nos IV Include Girder Stringer Number of Stiffeners 2 F8 C Decreasing ID Nos End Conn Fwd Stiffener Material Trans Frame End Connection za ee cL BL 295 0x100 96 0x 16 0T HT36 0250x0014 N SH T0 0000x00 B0 0000x00 Empt 930 295 0 x 10 0 96 0 16 0T HT36
139. lect which hold to view Midship Section Properties Di amy enay ShipRight FDA 4 28 Midship Section Lloyd s Register of Shipping 39 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Enter the Midship Section Structural Properties in the appropriate data boxes lyy is the second moment of area about the neutral axis Izz is the second moment of area about the centreline 3 7 Midship Plating Each region of the ship bottom side shell deck etc is composed of strakes of plating with different thickness Each strake can either have uniform thickness or non uniform thickness throughout the length of the cargo area For strakes with non uniform thickness a nominal thickness is first defined and then modified in a separate table Step 1 Transverse Plate Areas ShipRight FDA Midship Section Plating Midship Section Plating Area Outer Bottom x F5 Transverse Strake Definition Number of Strakes 6 J F6 Strake Strake Strake Strake 1 wea Thick Start End fmm rar mm i ae 1400 5400 9400 13400 17000 20700 Uniform Cargo Hold Plating Viste EER Sacha iregular Cargo Hold Plating 20700 mm 170 180 180 180 180 20 0 Transverse Plate Areas Longitudinal Plating Area Longitudinal Plating Area View Ready ShipRight FDA Quick Save Cancel OK Next gt gt 4 29 Transverse Plate Areas 1 Select Transverse Plate Area
140. length of the ship the local hydrodynamic pressures at parametric locations along the ship length and the immersed hull envelope n addition SolverP creates the link files required for the seakeeping criteria analysis performed in the voyage simulation SolverD computes the cargo tanks holds and water ballast tanks properties such as tank centroid free surface distance to base line etc for computation of the cargo water ballast inertia pressure components in the main FDA solver Lloyd s Register of Shipping 73 FDA Level 2 Software User Manual October 2002 Chapter 5 Section 1 The wave induced loads and motions are computed for the following range of wave parameters e 25 equally spaced wave frequencies from 0 2 rad s to 1 2 rad s e 10 equally spaced heading from O degrees stern seas to 180 degrees head seas for symmetric responses and 19 equally soaced heading from O degrees to 360 degrees for antisymmetric responses e five equally spaced ship speeds from 0 0 per cent Vs to 100 per cent Vs e two loading conditions for double hull tankers and 4 5 loading conditions for non panamax panamax bulk carriers respectively e where applicable 13 positions along the ship length from 30 per cent LPP aft of midships negative to 30 per cent LPP fwd of midships positive in five per cent increments On the control panel each solver has a completion box as well as a completion date to inform the user of their current status To r
141. levant to the criteria being set e g time is in hours roll value in degrees accelerations in m sec2 etc Criteria Types 11 to 32 require the entry of the X Y Z coordinates of the motion point to be considered where X is measured forward of the A P Y is measured from the Centreline positive to Starboard and Z is measured above the Base Line Lloyd s Register of Shipping 95 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 The X Y Z entry boxes are enabled when required The coordinates in the Master criteria are formulated as a percentage of the main particulars LBP Half Beam and Depth Where these are applied check the coordinates 3 2 Input Voyage Simulation Selection of Input Voyage Simulation from the Options pull down menu reveals a fly out menu with the following options Trading This enables the default trading pattern to be changed Pattern Route This enables the routes to be added to or modified Database Passage This enables the passages to be Database added to or modified 3 2 1 Trading Pattern The Trading Pattern data for the Voyage Simulation analysis is entered and modified by selecting the relevant Input Voyage Simulation option from the Options pull down menu The Trading Pattern is a list of Routes over which the vessel is expected to sail during its life This Trading Pattern is used to calculate the Service Profile Matrix Each Route must be defined before it can be i
142. maxima is therefore equal to yield The effective compressive stress range is taken as 60 percent of the total compressive stress range The total effective stress range is defined as follows yield yield yield AO 20 0 6 Ao N AO ez l l AO lt O Ao yield where A effective stress range to be used in fatigue calculations Ao calculated applied stress range material yield strength Ovield J Section 4 Structural influence coefficients For each load component applied to the structural detail a stress influence coefficient representing the state of stress at a hot spot under the subject load with a unit magnitude is determined Both analytical models and finite element beam models are used to derive the nominal structural influence coefficient Where applicable the nominal structural influence coefficients are corrected for a structural stress concentration factor to obtain the structural influence coefficients A typical structural influence coefficient is represented as follows C K y N mm per unit load i where k Structural stress concentration factor y nominal stress influence coefficient There are seven structural stress influence coefficients as follows C Local pressure bending structural influence coefficient C Global vertical bending moment axial structural influence coefficient C Global horizontal bending moment axial structural influence coefficient C4 Primary member lateral deflectio
143. n structural influence coefficient RHS C Primary member Induced Rotation structural influence coefficient LHS Cs Primary member lateral deflection structural influence coefficient RHS C Primary member Induced Rotation structural influence coefficient LHS Lloyd s Register of Shipping 141 FDA Level 2 Software User Manual October 2002 Appendix A Section 5 m Section 5 Fatigue spectral analysis 5 1 Multiple stress process combination The total stress can be expressed as follows n of CL i where C structural influence coefficient of the ith load process L t applied load process n total number of local processes The spectral function S o is calculated directly from the wave spectral function S o and the transfer function H of the ith load process and the complex conjugate of the H w of the ith load process as follows n n S 0 SAA E E Ci Cj H 0 Hj 0 J i The spectral moments required for calculation of the spectral band width and zero crossing frequency are given as follows m wi So 0 dw 0 5 2 Short term fatigue damage For a given stress check point location ship loading conditions ship speed ship heading to waves and seastate expressed in terms of significant wave height H4 3 and mean crossing period Tz the accumulated fatigue damage factor is expressed as follows n n S where M S number of allowable stress cycles at a stress range S
144. ncorporated into the Trading Pattern A Route consists of a group of pre defined Passages together with ship specific details such as unloading loading times and sailing times for each passage Additional Routes can be specified using the Route Database input screen Additional Passages can be entered using the Passage Database input screen ShipRight FDA oyage Simulation Lifetime Yoyage Trading Pattern Title 1 Tile2 Default Trading Pattern for VLCC Crude Oil Tanker ti Titles omza o oS Yoyage Simulation Time years 20 Dry Docking Days Year Selection of Default Trading Pattern 3 TRADING PATTERN SEEN DEFAULT 5 Routes Selected for Yoyage Simulation Selection of User Defined Trading Pattern ip Current Trip No 1 Kii gt New Trade Pattern Select Trading Route VLCI 7 Percentage time on Route 17000 Delete t time can be zero Currently Selected Route Details Route Title Persian Gulf to Far East T aiwan List of Ports Ras Tanura Total Percentage nn ere t Neate 100 00 2 A ShipRight FDA e E ee 7 9 Trading Pattern The SELECT DEFAULT button in the centre panel will select a default list of trading routes as specified by the adjacent drop down list The selected Default Trading Pattern includes Titles Voyage Simulation Time and Dry Docking Days Year as well as a list of Trading Routes and Percentage time on Route 96 Lloyd s Register of Shipping FD
145. nd Warnings This dialogue area controls how the program handles error and warning messages Log Error to File Create error log file FPDERRLOG TXT Yes Warn Before Cancel Issue warning before accepting Cancel Warn on Common Errors Issue warning when encountering error NOTE When executing the FDA solvers in batch mode the user might not want to interrupt the execution when common non fatal errors are encountered To over ride the issue of warning messages de select the Warn on Common Errors option 3 2 3 Processor Type The user may choose from the Processor Type option list whether the computer he she is using has a Pentium central processing unit CPU or 486 CPU Choosing the right option allows optimised execution 16 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 CHAPTER 4 PROJECT MANAGER Section 1 Creating a new project Section 2 Opening an existing project Section 3 Project Manager Control Panel Section 4 Menu bar Section 5 Tool bar The Project Manager window appears after the user selects the ShipRight FDA Project Manager button on the ShipRight FDA Front End The first time the user enters this module of the program no active project has been defined If no active project has been defined the window looks like this Lloyd s Register ShipRight FDA Project Manager Project Ship Date Databases EDA Options About lex 0 FLaee me i Pro
146. ne row for each zone is displayed Enter the start and end frames for each zone in the table A Check boxes are provided for each plating area A ticked check box will include that plating area in the computation You may deactivate a screening zone without deleting it by removing the tick from the Use column 4 4 3 Viewing FDA screening zones To view a screening zone pick the zone number in the table Alternatively use the up down spin buttons in the upper left corner The longitudinal screening zone is displayed in the ship elevation plot together with its zone number The plating areas included in the screening are highlighted in red in the midship section plot To view all longitudinal screening zones click the picture with your mouse 70 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 5 z Section 5 Tool bar The ShipRight FDA Project Manager has a tool bar with icon buttons that performs frequently used operations The table below summarises their function Begin a new project Open an existing project Close the current project Save the current project Print FDA report View edit summary info Run Database Doctor Open stiffener database Open end connection database Open material database Open S N curve database Fim se EEK eea A e E Exit to solvers Lloyd s Register of Shipping 71 FDA Level 2 Software User Manual October 2002 This page has i
147. nection critical location in a probabilistic format For each stiffener the probability of failure and the safety index versus the number of service years can be viewed e ina tabular format using the Table Tab e inagraphical format using the Graph Tab 126 ShipRight FDA Results iewer Probabilistic Fatigue Analysis File Goto Frame No 75 gt Plating Area Upper Deck v Stiffener ae x gt Stiffener S pecification Median Fatigue Life 450 0 x 125 0 x 11 5 18 014 Port Critical Location 1 277 88 HT32 Port Critical Location 2 468 74 Stbd Critical Location 1 285 90 0200001 3 N RH T3 0015x13 B0 0000 00 Stbd Critical Location 2 481 16 Starboard Starboard Starboard Starboard Fort Part Port Port alee G Crit Crit Crit Crit Crit Crit Crit Service Location Location Location Location Location Location Location Location 1 1 2 2 1 1 2 2 Probability Safety Probability Safety Probability Safety Probability Index Failure Index Failure Index Failure 3447e 07 5 9605e 08 8 9407e 07 1 1921e 07 1 2100e 05 1 6689e 06 1 3411e 05 1 847 7e 06 5 0843e 05 7 927 4e 06 5 5969e 05 8 7023e 06 1 3185e 04 2 2590e 05 1 4448e 04 2 4796e 05 2 6613e 04 4 9174e 05 2 9039e 04 5 3763e 05 4 6122e 04 9 0659e 05 5 0163e 04 9 8765e 05 7 221 7e 04 1 4943e 04 7 8321 e 04 1 6242e 04 Table ShipRight FDA Deterministic Fatigue Life for 20 00 Years Service 9 23 Table ShipRight FDA Results
148. ner Critical location The Fatigue Performance Overview enables display of an overall view or distribution of the fatigue performance for the given FDA Options Set This display is particularly useful to e Geta quick qualitative overview of the distribution of fatigue performance e Assess the spread in the fatigue performance e Assess the relative fatigue performance between plating areas The Fatigue Performance Overview window screen contains three tabs described in the following Sections 120 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Section 2 2 1 1 Graph options ShipRight FDA Results iewer Performance Overview File m Display Option 20 Years Fatigue Damage Index Deterministic Fatigue Life 97 5 20 Years Probability of Failure C 20 Years Safety Index Plot To 0 2500 Caption Format x Axis 0 0000 All Computed Plating Sections Plates side by side fan Framings m Active Display Plating Areas Available Plates Active Display Plates gt E Outer Bottom Side Shell Upper Deck Inner Bottom lt lt All Hopper Sloping Plate p ool Ready ShipRight FDA Deterministic Fatigue Life for 20 00 Years Service 9 16 Graph Options Using the available data filters the range and format of the horizontal axis of the distribution bar graph maybe controlled This is achieved through the selection of the appropriate param
149. ng area Lloyd s Register of Shipping 43 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Plating area Stiffener offset dimension for first group Direction amp spacing of incrementing stiffeners Outer Bottom From Centreline Outboard Outer Side Shell From Base line Upwards Deck From Centreline Outboard along plating Inner Bottom From Centreline Outboard Hopper Sloping Plate From Inner Bottom Knuckle Outboard along plating Inner Side Shell From Base line Upwards Upper Sloping Plate From Inboard Knuckle Outboard along plating Longitudinal Bulkheads From Base Line Upwards NOTE Stiffener Offset Dimension for subsequent groups for each plating area is measured from the last stiffener of the preceding group 8 The current plating area is highlighted in red The current stiffener group and its number is also highlighted in red A table of the vertical and horizontal offset of each stiffener in the current group is displayed in the lower left of this window 9 The stiffeners may be positioned on a different side of the plating To flip the highlighted stiffener group click the Current Group button in the Change Stiffener Side on Plate dialogue area To flip all the high lighted stiffener groups in the plating area click the Whole Area button HINT To zoom in for a better view click and drag over the area to be zoomed with the left mouse button To return to full view click any mouse button on the disp
150. nnections select the check boxes on the Flip column If it is necessary to flip the direction of a large number of end connections first highlight those connections to be flipped From the options list in the End Connection Orientation dialogue area pick the Selected End Connections option To put the toe forward of a frame click the Toe Fwd button To put the toe aft of a frame click the Toe Aft button To change the direction of all end connections in the table pick the All Displayed End Connections option then choose whether to put the toe aft or forward To undo the change hit the Restore Defaults button Step 6 Apply end connection to the stiffener s Once the end connection in the data table has been modified proceed to apply the changes to the selected stiffeners The status box tells you for which stiffener the table is displayed and to which stiffener s these end connections are applied Click the Apply button to apply the change Step 7 Accept the change or reject the change Selection of the OK or Next button accepts the change made Cancel discards the changes made and returns to the Project Manager Control Panel 3 9 2 Modifying Stiffener Details The method for introducing longitudinal variation in stiffeners is almost identical to that for end connections Select the Stiffener Details tab ShipRight FDA End Connection Details Builder Midship Section Plating Area Stiffener Selection lInnerBottom AFS
151. no gaps for strakes between the lower bottom plating area and the bilge radius plating area e Total Plate Length Make sure the plate length is correctly reported Pay special attention to sloping plates e Location of Last Stiffener Make sure the last stiffener for a plating area actually lies inside the the plate This is checked automatically in the current version of the software oF Midship Section Stiffener Definition e Stiffener X Y coordinate View each plating area in order to recalculate the correct stiffener coordinates Don t forget to save before exit 4 2 Ship data All items on this pull down menu are identical to those appearing in the Project Manager Control Panel See Ch 4 3 for description of their function 4 3 Databases The Databases pull down menu allows the user to access the following databases i Stiffener Database 2 End Connection Database G Material Database 4 S N Database Before stiffeners end connections and material can be assigned to the ship they have to reside in the project database ShioRight FDA is supplied with database libraries of standard stiffener sections These standard stiffener sections include in alphabetical order British Standard DIN Standard European Standard ISO Standard Japanese Standard Korean Standard e Nordic Standard o Polish Standard Stiffeners can be copied from these libraries into the project database If the stiffener section
152. ntentionally been left blank 72 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 5 CHAPTER 5 WAVE INDUCED LOADS AND MOTIONS Section 1 Executing solvers Section 2 Viewing analysis results From the ShipRight FDA Front End click the button for Wave Induced Loads and Motions The Wave Induced Loads and Motions Control Panel appears Lloyd s Register ShipRight FDA Wave Induced Loads and Motions Solver SolverP SolverD YViewRAO Time Domain Exit Wave Induced Loads and Motions Control Panel Computation Date SolverAmplitude 20 01 42003 13 41 SolverPhase Angle off SolverDerived Responses Pl tas Project FDA Capesize Bulk Carrier Test Ship Date 10 01 96 Shiptitle FDA2 Bulk Carrier Yard FAB3 Dwo 1 Shipbuilder FDA Team Initials FPG Rev A C N ROOTFDASBULKER SAMPLE LR ADD ASG ShipRight Strategic Research amp Development 5 1 Wave Induced Loads and Motions This window controls the execution of the solver modules used to obtain the response amplitude operators RAO s for the wave induced loads and motions There are three solver modules as follows Al SolverA Amplitude Solver 2A SolverP Phase Angle Solver G SolverD Derived Response Solver SolverA and SolverP compute the amplitude and phase angle respectively for e the six components of motion at the ship centre of gravity the vertical horizontal and torsional bending moments at parametric locations along the
153. ocedures for the level two and level three assessment Is given in Fig 1 1 1 The purpose of this document is to provide guidance and instructions to the user for performing a level 2 assessment 1 1 Level two assessment The level two direct calculation assessment utilises a simplified first principles Spectral Fatigue Analysis procedure The supporting FDA software Is currently applicable to e Double hull tankers longitudinal end connections e Bulk carriers longitudinal end connections l Applicable for new oil tankers from 28th anuary 1995 2 Applicable for new bulk carriers from 26t anuary 1996 Lloyd s Register of Shipping 1 FDA Level 2 Software User Manual October 2002 Chapter 1 Section 1 Wave Induced Loads amp Motion Computations Structural Response Analysis Statistical Analysis Fatigue Strength Voyage Simulation Level 2 Analytical Parametric Formulation Level 3 First Principle Ship Motions amp Load Software Level 2 Analytical FE Beam Model SCF Level 3 Global 3D FE Model Local Zoom FE Model Seastate Wave Height Wave Period Ship Heading Ship Speed Structural Detail Fatigue Strength S N Curve 100 A1 Fatigue Wave Environment Regular Waves Amplitude amp Phase Angle Hull Girder Loads External Wave Pressure Internal Cargo Pressure Local Stress Influence Coefficients ISSC Wave Energy Spectrum Service Profile Probability Matrix Wave Height Wave Period Shi
154. ombination Descriptions of the stiffener and end connection is shown in the table and also in data boxes Graphical representation of the stiffener and the end connection is also displayed To view the results of the analysis by frame and stiffener location click the S N Curve Expert Ship View button A dialogue window pops up ShipRight FDA S N Curve Expert Longitudinals Ship Summary Frame Number Critical Location 1 LRSN rami Curve Ps N mm2 A 1 E7 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 55 65101 Plating Area Critical Location 2 aes eas Curve Ma i OE7 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 51 43279 Outer Bottom o uter Bottom Stiffener Description 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 295 0 x 10 0 96 0 x 16 0 T 0250 001 4 8 0250 001 4 8 0250 001 4 6 0250 001 4 8 0250 001 4 8 0250 001 4 8 0250 001 4 8 0250 001 4 6 0250 001 4 6 0250 001 4 6 0250 001 4 6 0
155. ometry as a starting point D You can alter the shape of the midship section by defining pairs of points on the exterior of the hull and then adjusting the Y Z coordinates of these points to best reflect the shape of the new location From the Section Data dialogue area choose the No of Points to use with the spin buttons It is recommended not to use more than 10 pairs of points Lloyd s Register of Shipping 31 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 A Enter the Y and Z coordinates of these points in the data table Y is measured outboard from the centreline and Z is measured upwards from the baseline O Go through each tab in turn and modify the data as necessary 6 Repeat Step 5 for Cargo Area Aft Bulkhead Geometry 3 3 3 Data checking Data checking takes place when you save and exit from this dialogue screen provided you have enabled this option in the Program options in ShipRight FDA Front End see Chapter 3 If the program detects a problem a warning message is issued ShipRight FDA Input Not alid O Thickness for Double Bottom Girder 1 not input for Tank No 1 Forward Bulkhead Section Choose OK to return to your input or choose Override to save the data to disk Show All Invalid Input Override 4 19 Input Not Valid The Override button lets you exit and save but the program considers the data incomplete until the problem is corrected The Show All Invalid Input bu
156. onsistent application of ShipRight FDA as a design code it was essential that the wave induced loads be computed in an efficient reliable and consistent manner LR has conducted a parametric study of wave induced loads and motions for over 250 ship hull forms with variations on the principle dimensions and other significant parameters The wave induced loads and motions Response Amplitude Operator s RAO s as well as the Response Phase Operator s RPO s obtained from the parametric study were analysed to determine the significant parameters affecting the RAO A multivariate regression analysis was then performed to determine a series of influence functions to describe the RAO s From this study it is assumed that a typical RAO can be expressed as a series of influence functions and parameters as follows RAO V x fa V x a Vx a where f V x a i influence function defining the maximum amplitude FA V x o a influence function defining the RAO shape V ship speed x Ship to wave heading wave frequency a array of ship parameters a affecting the RAO amplitude and shape The wave induced structural loads considered in the analysis procedure are separated into the following components e Global vertical and horizontal bending moments e Local external hydrodynamic pressures e Local internal cargo inertia pressure 138 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Appendix
157. p Heading Ship Speed SpecFDA Solver Loads gt Load Effects Stress Combination Short Term Stress Response in Irregular Waves Short Term Short Term Fatigue Stress Cycle Damage Rate Rate Uncertainty Stress Model Uncertainty Workmanship Loading Condition Long Term Fatigue Damage Safe Life Acceptance Deterministic Fatigue Life Criteria L Probability of Failure y Fig 1 1 1 Spectral fatigue analysis procedure Level two and level three assessment Uncertainty Fatigue Model The direct calculation computational procedure is as follows The structural detail fatigue strength characteristics or S N curves are automatically assigned by the S N Curve Expert using a parametric formulation of the geometrical stress concentration factor derived from systematic finite element analyses of ship structural details The wave induced loads and motions in regular waves are determined from parametric formulations derived from the regression analysis of wave induced loads and motions in regular waves which have been computed from first principles using methods such as Strip Theory The procedure allows the determination of the amplitude and the associated phase angle of the global and local loads and the motions for any ship loading condition ship speed wave frequency and ship heading The structural response is determined from first principles using a combination of simplified finite element beam models and analytical procedur
158. play is particularly useful to e View the fatigue performance criteria for a given spatial stiffener location e Assess the relative fatigue performance between port an starboard e Assess the relative fatigue performance of stiffener along a given plating area for a given frame The Deterministic Fatigue Performance Summary table screen contains three tabs as follows e Min Fatigue Life Minimum of Port and Starboard e Port Fatigue Life e Starboard Fatigue Life ShipRight FDA Results iewer Deterministic Fatigue Performance Summary File Edit Fatigue Options Frame No 75 al gt Outer Bottom Fatigue Damage Index Crit Crit Location 1 Location 2 End Connection 122 ShipRight FDA 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T Port Fatigue Life 50250x0016 N RH T3 0015x16 80 0000 0250 001 6 N RH T3 0015x16 60 0000 0250 0016 N RH T3 001516 60 0000 0250 001 6 N RH T3 0015x16 60 0000 0250 0016 N RH T3 001516 60 0000 0250x001 6 N RH T3 0015x16 60 0000 0250 0016 N RH T3 001516 60 0000 0250 001 6 N RH T3 0015x16 60 0000 0250 0016 N RH T3 0015 16 60 0000 0250x
159. pping FDA Level 2 Software User Manual October 2002 Chapter 7 Section 2 2 2 Results Selection of Results from the View pull down menu reveals the following options for displaying the results of the Solver calculation routines Seakeeping Tabulated maximum speed to satisfy the seakeeping criteria SolverC Criteria Voyage Tabulated Service Profile Matrix for the Trading Pattern SolverV Simulation Voyage A polar plot of the probability of occurrence of wave to ship headings SolverV Simulation Graph 2 2 1 Seakeeping Criteria The tabulated results of the Seakeeping Criteria analysis are displayed by selecting the relevant Results option from the View pull down menu This table displays the results from Seakeeping Criteria analysis in terms of maximum ship speed that can be maintained for each loading condition and ship heading for each sea state Seakeeping Criteria Analysis Max Speed Table 180 0 Degs LC 2 Heading 1800 aE ShipRight FDA Af Lr 180 Bow Seas 90 Port 270 Stb Percentage values X Display Limiting Speeds Display Limiting Criteria Predicted Values Actual values List of Selected Seakeeping Criteria Types and Description Period 3 5 7 4 Seakeeping Criteria Results To view the maximum speed values for a particular heading and loading condition use the scroll bars below the relevant Heading and Loading Condition labels The Display button must be selecte
160. propriate data box the distance from the aft perpendicular to the aft most bulkhead engine room Bhd of the cargo region e the frame number for this bulkhead Enter in the appropriate data box e the distance from the forward perpendicular to the forward most bulkhead of the cargo region e the frame number for this bulkhead 2 Use the spin buttons in the No of Changes dialogue area to input the number of frame spacing changes for the ship in the cargo hold region The number of frame spacing changes determines the number of rows in the data table in the Primary Frame Spacing dialogue area 3 Enter the frame spacing information in the Primary Frame Spacing dialogue area For each region with constant frame spacing enter in the column From No the lower frame number for that region Enter in the Spacing mm column the frame spacing for that region Complete the table If all the information is entered correctly LBP Check is equal to LBP in the Check Values dialogue area Step 2 Secondary Frame Spacing Lloyd s Register of Shipping r Cargo Hold Frame Spacing Data Entry Mode D B Tank Floors a Spacing Changes 4 3 To Multi C Multi Frames ipli Sec Spacing m s From To Multi 1900 j C Multiplier Only m No To No 39 45 y C Frame No 45 276 77 00 2850 260 1 276 282 00 2550 Bottom amp Hopper V Same Spacings View Profile v Frame Spacing Sec Frame Spacing Trans Bulkheads Water Ballast
161. r East Taiwan W Europe Rotterdam N America New York S Africa Durban Singapore Japan Yokohama Indian Sub Cont Madras W Europe Rotterdam Latin America Santos Brazil N America New York Far East Taiwan Japan Yokohama S Europe Marseille W Europe Rotterdam N America New York Latin America Santos Brazil W Europe Rotterdam N America New York Latin America Santos Brazil N America New York Far East Taiwan W Europe Rotterdam N America New York S Africa Durban Far East Taiwan Indian Sub Cont Madras W Europe Rotterdam Latin America Santos Brazil N America New York Far East Taiwan Japan Yokohama 149 FDA Level 2 Software User Manual October 2002 Appendix B Section 2 Table B 3 100A1 fatigue wave environment world wide trading patterns for bulk carriers Ship Type Group Capesize bulk carrier 80 000 dwt and above Panamax bulk carrier 50 000 80 000 dwt Handy bulk carrier 5000 50 000 dwt NOTE The current FDA Level 2 software can only accommodate up to three different loading conditions Where a FDA Level 2 assessment is Iron Ore 61 Iron Ore 20 Iron Ore 16 Coal 29 Grain 36 Bauxite 10 Phosphate Rock 9 Trading Route Cargo Exporting area Australia Dampier Australia Walcott Australia Walcott Canada Sept Isles India Mormugao Latin America Tubarao Latin America Tubarao Latin
162. r Heel SH Soft Heel B Watertight Collar O Ordinary Frame Flat Bar Tripping Bracket Thickness Stiffener Depth Tripping Bracket Baselength N No Frame Stiffener S Single Flat Bar Stiffener D Double Flat Bar Stiffener T Tripping Bracket Lloyd s Register of Shipping 65 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 4 3 7 Adding an end connection to the project database DO0000000 N NH T1 0000 00 60 0000 00 Desc fE Sort New Delete Copy Draw Mode Library Schematic C Scaled Delete All Double Flat Bar T Schematic All Dimensions in mm Watertight Collar Flat Bar Depth d1 O mm Flange Edge Stiffener Flat Bar Thickness t1 0 00 mm Flat Bar Depth d2 Um Flat Bar Thickness t2 0 00 mm Critical Location 2 Ready ShipRight FDA SDD Guide URI lt lt Prev Next gt gt Discard Close Stener J Heel lw Backing Bracke 4 55 End Connection Database Stiffener 1 From the Database pull down menu select End Connection Database The end connection database dialogue screen appears If this is a new project there are no end connections in the project database All the end connections in the project database are listed in the drop down list in the top left corner A Pick the Stiffener tab if you are not already in it Pick the New button From the third drop down list select the type of frame stiffener
163. r Manual October 2002 Chapter 4 Section 3 Step 2 Longitudinal Plating Area ShipRight FDA Midship Section Plating l Midship Section Plating Area Define Longitudinal Plating by m C By Hold Hopper Sloping Plate F5 By Stake Transverse Strake Selection Longitudinal Strake Definition 9 Number of Scantling Changes Strake Strake Strake stake Width Thick Start ID rom mm mm eee 2000 3350 21 0 2000 2803 17 0 5350 8153 0 0 0 0 0 0 0 0 0 Displaying Strake No 1 Defining Strakes 1 2 3 lt lt Apply Transverse Plate Areas Longitudinal Plating Area Longitudinal Plating Area View Ready ShipRight F DA Quick Save Cancel OK Next gt gt 4 30 Longitudinal Plating Area Pick the tab Longitudinal Plating Area A data table is displayed in the Transverse Strakes Selection dialogue area showing the strakes in the plating area in question and their respective widths and thicknesses This table is used for selecting strakes Select a strake with non uniform thickness by clicking the Strake ID The strake is highlighted To deselect a strake click again To select more than one strake click on the next strake Select a method for inputing the longitudinal distribution of thickness There are two methods in the options list in the Define Longitudinal Plating By dialogue area If the thickness varies by hold choose the By Hold option To define an arbitrary longitudinal v
164. r of Shipping FDA Level 2 Software User Manual October 2002 Chapter 3 Section 1 CHAPTER 3 SHIPRIGHT FDA FRONT END Section 1 Program control Section 2 ShioRight FDA batch mode Section 3 Program options Mi Section 1 Program control The ShipRight FDA Front End provides access to the separate program modules Each module is accessed sequentially to perform a complete fatigue design assessment The user is returned to the Front End after performing each step The FDA front end has nine buttons for accessing these modules Exit About C eee Ji ShipRight FDA Wave Induced Loads amp Motions FDA Option FDA Default LR D etal Design Guide Program Options Project FDA Capesize Bulk Carrier Test Ship Date 10 01 96 Shiptitle FOA2 Bulk Carrier Yad FAB3 Ding 4 Shipbuilder FDA Team Initials FPG Rew A C NROOTFOASBULKER SAMPLE LA ADO 45G ShipAight Strategic Research amp Development 3 1 ShipRight FDA Front End Four of these buttons have a completion box to their right When the box is empty or partially filled the particular step associated with the button is incomplete Some buttons steps cannot be activated until certain preceding step s has hnave been completed Lloyd s Register of Shipping 13 FDA Level 2 Software User Manual October 2002 Chapter 3 Sections 1 amp 2 The following table summarises their function and provides reference to subsequent Chapters of this document ShipRig
165. reen There is a completion box next to each heading Two dates are also shown indicating the date each data group was first created and last updated respectively The control panel also provides a hypertext link to the S N Curve Expert Analysis dialogue screen The following table lists the Section number in this Chapter corresponding to each heading as well as the ship type s applicable Data Entry Heading Ship Type General Ship Characteristics All Loading Conditions All Midship Info All Framing All Cargo Distribution Bulk Carriers only Section Properties All Midship Plating All Midship Section Stiffener Definition All Midship Section Stiffener Details All S N Curve Expert Analysis All The appearance of some dialogue screens is dependent on the ship type For ease of indicating which option is specific to each ship type an abbreviated code is used in the subsequent sections B indicates the option data is specific to bulk carriers only T indicates the option data is specific to tankers only Lloyd s Register of Shipping 21 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 3 1 General Ship Characteristics ShipRight FDA Ship Characteristics Ship Type Bulk Carrier i General Dimensions LPP 279 000 metres Beam Moulded 45 000 metres Depth 24 100 metres Service Speed 15 500 knots Bulb Options gt General Options Bulb lw 3 Panamas Distance from MS to l Bulb Ex
166. rejects your first attempt to login you are allowed two more attempts Rejection of all three attempts will cause the program to issue a failure warning Consult your FDA administrator ShipRight FDA f x Sorry Login was unsuccessful Aborting application 2 3 Login failure After you have successfully logged in proceed to Chapter 3 ShipRight FDA Front End 10 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 2 Section 3 E Section 3 Technical support LR operates a technical support service from its headquarters in London UK The service comprises assistance from technical experts between the hours of 9 am and 5 pm Should you discover a problem or require assistance in using the program or in understanding the procedures please contact the IT Helpdesk ShioRight support via telephone or email at the numbers address listed below When reporting a problem by telephone please have your computer at the ready so as to follow any advice or provide background information to assist LR in diagnosing your problem When reporting a problem by email please complete the SDIS Feedback Form located at the back of this manual and send as an attachment to the IT Helpdesk Tel 44 0 20 7423 2900 email it helodesk lr org shipright lr org Lloyd s Register of Shipping 11 FDA Level 2 Software User Manual October 2002 This page has intentionally been left blank 12 Lloyd s Registe
167. rministic Fatigue Performance Summar File Edit Fatigue Options Plating Area Frame Options Grid Options g 5et Minimum Fatigue Life Number of Sorted Rows ret Set Maximum Fatigue Life Maximum Rows D Ta o Show All Critical Locations eterministic i Fd Index Frame Pang v Color Min Max 20 years CaN Ps 97 5 Lloyd s Register of Shipping 0 3415 22 3 1 0 3030 Fatigue Performance Ready ShipRight FDA Outer Bottom Starboard 1 046 07 Actual Outer Bottom Side Shell Side Shell Side Shell Side Shell Outer Bottom Outer Bottom Outer Bottom Outer Bottom Side Shell Side Shell Outer Bottom Performance by Stiffener Starboard 1 046 0 Actual Part 2 039 63 Actual Port 1 041 43 Actual Port 1 041 43 Actual Port 1 041 43 Actual Starboard 1 048 34 Actual Port 1 048 34 Actual Starboard 1 048 34 Actual Starboard 1 048 34 Actual Port 1 041 43 Actual Port 1 041 43 Actual Port 1 048 34 Actual Deterministic Fatigue Life for 20 00 Years Service 9 22 Sorted Fatigue Life Sorted Fatigue Life Close 125 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 2 2 4 Probabilistic Fatigue Analysis Service years Median Fatigue Life Probability of failure Safety index for each ship side and critical locations Frame Plating area Stiffener Critical location This window screen allows the display of fatigue performance of each end con
168. robability values are controlled by the toggle options above the table and are listed below Clicking these options automatically updates the table Probability Probabilities are in parts per 1 000 ie the sum of all values in this table add up to 1 000 Thousand Probability Probabilities are in parts per 1 000 000 ie the sum of all values in this table add up to 1 000 000 Million Probability Where Life is as specified for the Voyage Simulation analysis in the Trading Pattern data Life Probabilities are parts per 1 000 000 As one year of life results in 1 000 000 parts then 20 years life gives 20 000 000 parts The values in this table give the predicted No of parts based on the total trading pattern life eg a value of 600 on a 20 year life indicates a probability level of 600 20 000 000 or 3E 05 Lloyd s Register of Shipping 91 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 2 Probability Probabilities are in parts per 1 000 000 The values in this table give the predicted number of parts Year based on one year 2 2 3 Voyage Simulation Graph Graphical results of the Voyage Simulation Analysis are displayed by selecting the relevant Results option from the View pull down menu The graphs are presented as polar plots with the Percentage Probability of each Wave to Ship Direction Occurring for each Ship Speed on the radial axis and the Wave to Ship Direction on the angular axis Notes 1
169. rol Panel appears Lloyd s Register ShipRight FDA Structural Response Solver L SolverP Structural Response Control Panel Computation Date Solver Local Structural Response aada Project FDA Capesize Bulk Carrier Test Ship Date 10 01 96 Shiptitle FDA2 Bulk Carrier Yard FAB3 Dwg 1 Shipbuilder FDA Team Initials FPG Rev A C 4 N ROOTFDABULKER SAMPLE LR ADD ASG ShipRight Strategic Research amp Development 6 1 Structural Response This window controls the execution of solver modules used to obtain the structural influence coefficients relating the stresses at the critical location to the application of a unit load There are two solver modules ile SolverL Solver for secondary structural response 2 SolverP Solver for primary structural response SolverL computes the structural influence coefficients for the critical locations due to the lateral pressure and the vertical and horizontal hull girder loads SolverP computes the structural influence coefficients for the critical locations due to the primary deflection on the structure The full version of SolverP has not been incorporated in the current release of the software an alternative empirical formulation is used to account for the deflection of the primary structure On the control panel each solver has a completion box as well as a completion date to inform the user of their Current state To return to the ShioRight FDA Front End choose Exit on the menu
170. rward Toe Aft Heel Fwd Interactive graphics display of the stiffener end connection is also available to assist the user in making the selection See Ch 4 4 for more information on end connection types 46 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 ShipRight FDA End Connection Primary Builder Midship Section Plating Area Transverse Frame Type Side Shell 7 F5 Transverse Frame v Fs Select Stiffener Specification ID of First Stiffener imee ee Number of Stiffener Groups 4 Vv s50 0 1000 11 01701 gf Current Group Number al gt Vv z tabase Stiffener Offset Dimension 2160 mm V N0000 0000 N NH T0 0000x00 80 0000x00 6 v __Database Stiffener Spacing 960 mm Number of Stiffeners 54 F8 Stiff Stiff ID No Trans Frame End Connection 1 11341 T0500x0012N RH T1 0000 00 B0 0000 00 3 T0500 001 2 N RH T1 0000 00 80 0000 00 3 50250001 4 N SH T0 0000 00 B80 0000 00 Empt 0250x001 4 N SH T0 0000 00 80 0000 00 Empt 0250x0014 N SH T0 000000 80 0000 00 Empt Table Midship Section Stiffener End Connection Ready ShipRight F DA Quick Save Cancel OK Next gt gt 4 36 End Connection Icon buttons control what is displayed l Full display of end connection Soft heel details if defined Za Toe bracket details if defined IN Backing bracket details if defined
171. s B ShipRight FDA Cargo Tank Arrangement Water Ballast Tanks Pipe Tunnel Double Bottom Tanks v No of WB Tank Centreline Pipe Tunnel z Tak uaa ee C Side Pipe Tunnel rom 0 ani verow Uutel 255 282 25050 EN Aare 255 51300 sia TE 201 51300 147 51300 Heavy Ballast Hold No 93 51300 6 View Frame Spacing Sec Frame Spacing Trans Bulkheads Water Ballast Tanks Hatch Openings ShipRight FDA Cancel OK Next gt gt 4 24 Water Ballast Tanks 1 Select the Water Ballast Tanks tab Select the type of tank from the drop down list in the Water Ballast Tanks dialogue area Two options are available e Double Bottom Tanks e Side amp Topside Tanks Perform step 4 for both tank types For viewing the ballast tanks as they are created it is better to use the plan view option 2 Enter the number of water ballast tanks using the WB Tank No spin buttons In the data table enter the start and end frames for each tank in columns one and two respectively The start frame for the next tank is automatically taken as the end frame of the previous tank Enter the height of the overflow outlet of these tanks above the base line in the last column For hopper side and topside tanks tick the check box in the Conn Tank column if they are connected J In the Pipe Tunnel dialogue area pick the type of tunnel from the options list For a side pipe tunnel use the spin buttons to
172. s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 B Section 3 Project Manager Control Panel Lloyd s Register ShipRight FDA Project Manager Project ShipData Databases Oexa 8 amp 0 Pig Project Manager Control Panel Z 1 General Ship Characteristics 2 Loading Conditions 3 Bulk Carrier Midship Info 4 Bulk Carrier Framing 5 Cargo Distribution 6 Midship Section Properties 7 Midship Plating 8 Midship Section Stiffener Definition Created 10 01 1996 10 16 10 01 1996 10 16 10 01 1996 10 16 10 01 1996 10 16 10 01 1996 10 16 10 01 1996 10 16 10 01 1996 10 16 10 01 1996 10 16 Updated 20 01 42003 11 00 20 01 2003 11 01 20 01 2003 11 16 20 01 2003 11 21 20 01 2003 11 22 20 01 2003 11 24 20 01 2003 11 26 07 10 2002 08 52 F Project FDA Capesize Bulk Carrier Test Ship Date 10 01 96 RS Shiptitle FDA2 Bulk Carrier Yard FAB3 Dwg 1 Ss Shipbuilder FDA Team Initials FPG Rev A C 4 ROQOTFDASBULKER SAMPLE LR ADD ASG ShipRight Strategic Research amp Development 4 6 Project Manager The ShioRight FDA Project Manager Control Panel allows the user to enter the ship data necessary for performing a fatigue design assessment The ship data is entered via nine data groups in the case of a bulk carrier and eight in the case of a tanker Each data group heading is listed on the Project Manager Control Panel with a hypertext link to the respective dialogue sc
173. s a new waypoint after the highlighted row Insert Inserts a new waypoint before the highlighted row Delete Removes the highlighted row As waypoints are added or deleted the Total No of Waypoints is updated automatically The Current Waypoint is highlighted in the waypoint table and in the Current Waypoint box The corresponding Latitude Longitude coordinates are displayed in the data entry boxes to the left of the table Clicking on the Add or Insert buttons takes the user to the Latitude Degrees box this value can be entered directly and the user can then Tab to the Latitude Minutes box etc A Tab after the E W toggle option moves to the Add box and the Enter key now adds a new waypoint and so on The Create Great Circle Passage Waypoints button below the waypoint table generates a set of Great Circle waypoints between the current highlighted waypoint and the previous waypoint This button invokes a new data entry panel with the following options Great Circle Control Panel This Option will generate a Great Circle passage between the current wappoint and the previous waypoint x Use Ice limits for Great Circle Passage Northern Ice Limit E Default Ice Limits e 7 ShipRight FDA 7 12 Great Circle Control Panel Use Ice limits for Great Circle Passage When checked this box specifies that the generated Great Circle passage is along the appropriate Ice limit latitude if the vertex of the Great Circle passage is above the Ice limit
174. s tab Choose the Midship Section Plating Area from the drop down option list The selected plating area is highlighted in red 2 From the Transverse Strake Definition dialogue area use the spin buttons to select the Number of Strakes Define a different plating strake for each thickness You may have two adjacent plating strakes with the same thickness The strake ID s are defined according to the convention described in Ch 3 3 cy In the data table enter the width of each plating strake in the Strake Width column and the thickness in the Thickness column The plating strakes and their thicknesses are shown on the display For strakes with non uniform thickness throughout the length of the cargo area enter a nominal thickness which may be modified later 4 Check that the total width of the strakes is the same as the Total Plate Length shown in the databox The total width of the plating strakes is reported in the last row of the Strake End column O For plate areas with non uniform thickness pick Irregular Cargo Hold Plating from the options list Otherwise pick Uniform Cargo Hold Plating 6 Pick a different plating area from the drop down list and repeat step 1 Thickness for all plating areas has to be defined For plating areas with non uniform thickness proceed to step 2 For plating areas with uniform thickness along the length of the cargo area this Section is complete 40 Lloyd s Register of Shipping FDA Level 2 Software Use
175. s used e To Multi In the To No column enter the ending primary frame number for each region with a different secondary spacing The starting primary frame in the From No column is automatically determined with each subsequent starting primary frame taken as the end frame for the previous region In the Multiplier column enter the number of primary frame spaces in between two web frames All the other columns on the table will be calculated e Multi Frames In the Multiplier column enter the number of primary frame spaces in between two web frames In the Frames column enter the number of secondary frame spaces that uses that particular primary frame multiplier e Multiplier Only In the Multiplier column enter the number of primary frame spaces in between two web frames The Frames column is set to 1 by default e Frame No In the To No column enter the primary frame number where there is a web frame The Frames column is set to 1 by default 34 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 3 Bulk Carrier Transverse Bulkheads B Transverse Bulkheads ShipRight FDA ShipRight FDA Cargo Tank Arrangement i x No of Transverse Bulkheads 10 gt View Profile Buktesdnoomae 1 e J o e s e e 1900 1900 1900 1900 9935 3400 3400 3400 Frame Spacing Sec Frame Spacing Trans Bulkheads Water Ballast Tanks Hat
176. s where Minimum Overall Fatique Life is more than the selected years As with all sections you may preview this report by choosing Preview Section Print it by choosing Print Section and print all of the sections by choosing Print All Frame Options Filter All Framings Don t print records where Minimum Fatigue Life is more than FromFrame p5 al gt 500 years ToFrame 3 af I Service Life of 17 372 Years Plates Available Selected Upper Deck Outer Bottom Inner Bottom Ea Side Shell Hopper Sloping Plate Inner Skin Inner Longitudinal Bhd All gt gt lt lt All regis If only one Plate is selected you may also add a filter for Stiffeners Sine lt lt Back Next gt gt Close Preview Section Print Section Print AII 9 33 FDA Results Summary Report Builder Sorted Fatigue Life 5 3 Reports amp ShipRight FDA Results Viewer cross reference For each report the description of the variables display and available data filters is available from the ShioRight FDA Results Viewer Sections given below Report type Min Fatigue Life Longitudinal Deterministic Performance by Stiffener Sorted Fatigue Life Performance Overview Midship Section Plating Areas by Plate Frame Plating Areas All Frames Longitudinal Distribution 5 4 Basic FDA Results report A basic FDA Results Report should contain the following report items e FDA Options e Performance by Stiffeners for the defici
177. saved 56 Lloyd s Register of Shipping 4 1 2 Print FDA Report Project Notes Ship General Characteristics Loading Conditions MS Geometry and Structural Properties MS Deck Knuckles and Double Bottom Girders Primary Frame Spacing Cargo Hold Frame Spacing Double Bottom Tank Floors Cargo Hold Frame Spacing Hopper Side Transverse Cargo Hold Frame Spacing Topside Tank Transverse Transverse Bulkhead Frame Spacing Water Ballast Tank Frame Spacing Hatch Dimensions Cargo Distribution Strake Definition Select All Deselect Al Scantlings Databases amp Calculation FDA Level 2 Software User Manual October 2002 Select the Reports that you wish to print by clicking on the checkboxes Please note that there are two sets of checkboxes one for Scantlings and one for the Databases amp Calculations Selecting Preview will present you with a list of the reports that you have selected allowing you to choose one at a time for previewing Choosing Print All on the other hand prints ALL of the reports that you have selected Please note that the printing of FDA Results are not available from this dialog but can only be accessed via the separate ShipRight FDA Results Viewer program This dialog is also available from the results viewer program however so if you wish to print a full FDA Report it is recommended that you print from the results viewer Please also note that the Scantling Report Builder se
178. sdiction of the English courts Global Wave Statistics supplied under license from BMT Fluid Mechanics Ltd Lloyd s Register Marine Business Stream is a part of Lloyd s Register of Shipping Lloyd s Register of Shipping 2002 Registered office 71 Fenchurch Street London EC3M 4BS FDA Level 2 Software User Manual October 2002 CONTENTS CHAPTER 1 Section 1 Section 2 CHAPTER 2 Section 1 Section 2 Section 3 CHAPTER 3 Section 1 Section 2 Section 3 CHAPTER 4 Section 1 Section 2 Section 3 Section 4 Section 5 CHAPTER 5 Section 1 Section 2 CHAPTER 6 Section 1 Section 2 CHAPTER 7 Section 1 Section 2 Section 3 Section 4 CHAPTER 8 Section 1 Section 2 INTRODUCTION ShipRight Fatigue Design Assessment procedure How to perform a level 2 Fatigue Design Assessment GETTING STARTED Ship Definition Conventions Starting ShioRight FDA Technical Support SHIPRIGHT FDA FRONT END Program Control ShipRight FDA batch mode Program Options PROJECT MANAGER Creating a new project Opening an existing project Project Manager Control Panel Menu Bar Tool Bar WAVE INDUCED LOADS AND MOTIONS Executing solvers Viewing analysis results STRUCTURAL RESPONSE Executing solvers Viewing analysis results VOYAGE SIMULATION Solvers View menu Options menu Voyage simulation limits SHORT TERM amp LONG TERM FATIGUE SOLVER Running solver Troubleshooting
179. se either to the original lV Performance By Stiffener project database by default or to the current reports database if I Sorted Fatigue Life the original project cannot be found and may also be imported and customised from other projects if necessary Longitudinal Distribution Graphs Set Report Date 21 201 2003 v V Plating Areas By Plate Frame Graphs Print Scantlings V Plating Areas All Frames Graphs V Midship Section V Performance Overview Select All Deselect All Next gt gt Close Print All 9 32 FDA Results Summary Report Builder Report Template Ship Geometry Scantlings and Voyage Simulation The enabled tabs with blue text are for the graphs whilst black text is for tables For the description of the Print Scantlings dialogue area and the reports available the user should refer to Ch 4 4 1 2 For additional guidance on using the Report Preview facilities the user should refer to Ch 4 4 1 2 5 1 Report Templates To facilitate the generation of reports a facility to generate Report Templates has been implemented The user is encouraged to create Report Templates which can be re used for different projects if required to summarise the results at different stages of the FDA analysis Such template reports can be used as a means to track the detail design improvement process and form a record for analysis quality assurance purposes A Report Template may be saved in the project directory or
180. ship side Min Allowable LRSN Frame Plating area Stiffener Critical location ShipRight FDA Results iewer Longitudinal Deterministic Fatigue Performance Summa File Edit Fatigue Options Plating Area Frame Options Fatique Damage Index for Outer Bottom on All Framings Max All Deterministic Minimum Fd Index Frame ee oer Allowable Section 20 years ee Ip vice LRSN Ps 97 5 Starboard 029 932 575 0 13 0 150 0 26 0 T Starboard 029 938 575 0 13 0 150 0 26 0 T Starboard 029 947 575 0 13 0 150 0 26 0 T Starboard 029 963 575 0 13 0 150 0 26 0 T Starboard 030 030 575 0 13 0 150 0 26 0 T Starboard 030 106 575 0 x 13 0 150 0 26 0 T Starboard 030 146 575 0 x 13 0 150 0 x 26 0 T Starboard 030 201 575 0 13 0 150 0 26 0 T Starboard 030 330 575 0 x 13 0 150 0 26 0 T Starboard 030 484 575 0 x 13 0 150 0 26 0 T Starboard 030 568 575 0 x 13 0 150 0 26 0 T Starboard 030 736 575 0 x 13 0 150 0 26 0 T MAAA m Ban ba n 1 4 Prob one NAM MIA eve n 19n 16nn 37 OT ti o Fatigue Performance Sn Performance by Stiffener i i Sorted Fatigue Life The item S0250 0016 N RH T3 0015x16 B0 0000 00 is repeated 25 times in 27 rows 92 6 Sh ipRig I ut FD A Deterministic Fatigue Life for 20 00 Years Service 9 20 Fatigue Performance Lloyd s Register of Shipping 123 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 2 2 3 2 Performance By Stiffeners This table permits the display of minim
181. should have a fatigue life greater or equal to the in service period e A brief overview of the fatigue performance of the subject ship is given in terms of the number of stations where the fatigue life is below the in service period and the percentage in relation to the total number of stations A Station is defined as a single critical location the total number of stations is determined by the number of frames the plating areas and associated number of longitudinals selected under the current FDA Options set In the present version of ShioRight FDA there are two critical locations associated with each longitudinal end connection i e heel and toe of web stiffener 112 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 9 Section 1 ShipRight FDA Results iewer Fatigue Performance Analyser l Fie FDA Results view Number of Stations where Fatigue Life is below 20 00 years 0 0 00 FDA Voyage Default Trading Pat Simulation Period 20 00 Years Service 17 37 In Service Years FDA Options Celli ea Ready ShipRight FDA Deterministic Fatique Life for 20 00 Years Service 9 3 VS Routes 1 2 Menu bar The ShipRight FDA Results Viewer has a menu bar with three items as follows 1 2 1 File The File pull down menu offers various file management facilities as follows Close Current Result File To close the currently opened result file Change Result File Title To edit the re
182. st boxes examples of which are shown below Select Stiffeners F x Remove Stitfeners from the list of Selected stiffeners to be printed and choose OF to record your changes Available Selected All gt gt zs All 9 13 Stiffener selected list box The selection process of the active stiffener is similar to the procedure outlined in Ch 9 1 4 2 Note that this facility is only available at the Report Printing level 9 14 Stiffener filter 1 4 4 Critical locations filter To display selected critical locations and or narrow down the fatigue critical locations data filters may be applied Critical Locations Filtering is available through a drop down list box Critical Location 1 7 Critical Location Critical Location 2 MiniMag of C1 amp C2 9 15 Critical location filter Lloyd s Register of Shipping 119 FDA Level 2 Software User Manual October 2002 Chapter 9 Sections 1 amp 2 1 4 5 Data filter availability For ease of assessing the data filters available to each display screen the following table is used in the description of each fatigue performance view Availability of a filter is shown by a check mark 3 against the relevant item in the table Frame Plating area Stiffener Critical location K Section 2 FDA Results tabular display 2 1 Fatigue Performance Overview Fatigue Performance Number of critical locations Criteria Range Frame Plating area Stiffe
183. sult file title Printing To print a FDA Report View Error Log To view the error log Exit Program To close and exit the FDA results viewer 1 2 2 FDA Results The FDA Results pull down menu permits the user to view the results in a tabular format Menu item Function Performance Overview Histogram bar chart of fatigue performance Deterministic Fatigue performance by frame stiffener Longitudinal Deterministic Sorted fatigue performance by stiffener Probabilistic Fatigue performance vs service life Lloyd s Register of Shipping 113 FDA Level 2 Software User Manual October 2002 Chapter 9 Section 1 1 2 3 View The View pull down menu permits display of the results in a graphical format Midship Section View performance by ship cross section 3 1 Plating Area View performance by plating area 3A Longitudinal Distribution View performance by stiffener 3 3 1 3 ShipRight FDA Results Viewer reference There are a number of common features options or data manipulation schemes throughout the various display screens To facilitate the user task this section may be used as a reference to the main features of the ShioRight FDA Results Viewer 1 3 1 Fatigue performance criteria Throughout the program the fatigue performance may be displayed in different format as follows e Fatigue Damage Index for the computed simulation period e Deterministic Fatigue Life at 97 5 per cent probability of survival for the
184. t 145 000 metres Ship Group 1 Capesize Bulk Carrier 80 000 dvut Ready ShipRight FDA sre 0K 1 4 7 Ship Characteristics Most of the data entry boxes are self explanatory The Ship Type has already been defined when creating a new project and cannot be changed here 3 1 1 General Dimensions LPP is the distance in metres on the summer load waterline from the forward side of the stem to the after side of the rudder post or to the centre of the rudder stock if there is no rudder post In ships with unusual stern arrangements the length LPP is to be specially considered Beam Moulded is the midshio moulded breadth in metres Depth is the distance measured in metres at the middle of the Rule length L from the top of the keel to the top of the deck beam at side on the uppermost continuous deck When a rounded gunwale is arranged the depth is to be measured to the continuation of the moulded deck line Service Speed is the design service speed of the ship in knots 3 1 2 Bulb Options Use the Bulb check box if the ship has a bulbous bow The Distance from MS to Bulb Ext is the distance in metres measured parallel to the baseline from midships to the forwardmost extent of the bulb 3 1 3 General Options Use the Bilge Keel check box if this is present B Use the Panamax check box if the vessel is a Panamax size bulk carrier This adds a grain loading condition and enable the correct default trading p
185. t and the time period left remaining denoted unallocated time is given to all routes with unspecified percentage time For Example Simulation Time 2000 days Route 5 time 25 say 25 days for Route 5 Route 3 time 0 say 10 days for Route 3 Route 6 time 0 say 20 days for Route 6 So 25 per cent of the time will be on Route 5 which equals 500 days hence the unallocated time is 75 per cent 1500 days which is shared between routes 3 and 6 Consequently route 5 is sailed 20 times 500 25 and routes 3 and 6 are each sailed 50 times from 1500 10 20 If the summation of the Percentage times is greater than 100 per cent then the box labelled Total Percentage Allocation is displayed in red and the user cannot exit from this panel The Current Trip No can be selected by either e Clicking on the Route column or the Time column in the Trading Pattern table In this case the user can alter the selected value immediately e using the Current Trip No scroll bar and then selecting the Select Trading Route list or the Percentage box Lloyd s Register of Shipping 97 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 Display The Display button displays the world map showing the Trading Pattern routes selected see the Display World Map option described in 2 1 All Routes This option list enables prior selection of the information to be shown after selecting the Display This Route screen
186. t the type of cargo carried There are two options coal and iron ore For Panamax size bulk carriers there is an additional option grain From the options list choose how the cargo is distributed For iron ore the default is loading in Alternate holds For coal and grain the default is Homogeneous loading in all holds If the loading is neither alternate nor homogeneous choose the option User Defined Odd numbered holds are filled in the default alternate loading condition Double clicking Alternate in the options list changes that to even numbered holds The specific gravity has already been defined in Loading Conditions Enter the Angle of Repose for that cargo type in the data box This angle measures the inclination of the cargo surface to the horizontal In the Cargo Shape Coordinates dialogue area pick the the Default FDA Cargo Shape This assumes a uniform cargo shape over the length of each hold In the Loaded Cargo Holds data table enter the cargo weight in tonnes for each filled hold A ticked check box for that hold indicates the hold carries cargo As a quick check of the input the Displacement and Total Cargo Weight is reported in separate data boxes This is provided as a visual check for the user Select another cargo type from the drop down list and repeat the procedure until the cargo distribution has been defined for all cargo types carried To view the cargo distribution for each hold use the View Hold spin buttons to se
187. ta Entry panel Accept This button updates the current waypoint with the coordinates specified in the Latitude Longitude data entry boxes Passage Provides Help Save Saves the modified passage including changes to the titles Cancel Removes the Passage Data Entry panel without saving the data OK Saves the Passage data and removes the Passage Data Entry panel When the Passage or Route Data Entry panels are displayed the user can modify the three lines of Titles in the centre top panel The Passage and Route Data Entry panels can be moved by clicking and dragging the panel to a new section of the screen 2 1 3 Modifying a Route using MORE Using More when a single Route is selected enables this Route to be modified whilst the Route is displayed The user sees a Route Data Entry panel which offers similar facilities to those on the similar panel on the Route Database input screen This panel can be moved around the screen in the same way as the Passage Data Entry panel No mouse actions are available for use with the Route Data Entry panel The following additional facilities are available on the Route Data Entry panel Route Provides Help Save Saves the modified Route including changes to the titles Cancel Exits from the Route Data Entry panel without saving the data OK Saves the Route data and removes the Route Data Entry panel The Titles in the centre top panel can be modified at this stage 88 Lloyd s Register of Shi
188. terial database contains different types of steel Pick Material Database from the Databases pull down menu To add a new type of steel to the database click the Add button A new row Is added to the table of material Enter the material description yield stress and ultimate tensile stress in each of the columns respectively To remove a material from the database highlight it and pick the Delete button 4 3 10 S N Curve Database This database is not used by ShipRight FDA for the computation of fatigue life The S N curves displayed in this database are for reference purposes only This allows the user to make comparison between standard LR S N curves and more common BS5400 UK Den S N curves It may also be used to inspect the various parameters used to define a S N curve From the Databases pull down menu select S N Database ShipRight FDA S N Curve Database Stress Range MPa 10 1 0e 04 1 0e 05 1 0e 06 1 0e 07 1 0e 08 1 0e 09 Number of Stress Cycles LRSNOBS E Curve Haibach Correction Below So y User S N Curve Add Delete Design S N Curve ShipRight FDA 4 60 S N Curve Database 68 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 l Select which S N curve to display from the left hand drop down list These default curves are referenced by both the LR S N notation and BS 5400 notation The higher blue curve is the mean curve the lower green
189. the Stiffener No in the data table To select a range of stiffeners pick the first one in the range then pick the last one with the shift key depressed To select all the stiffeners in the table pick the column heading Select the Apply button and the program will assign the stiffener properties to the selected stiffeners in the table To apply say the stiffener scantlings only without changing the material and end connection type remove the checks in the check boxes in front of the material and end connection drop down lists This renders the corresponding columns in the data table non editable NOTE An alternative method of applying stiffener properties is to highlight on the table the stiffener properties to be changed with the left mouse button then click the right mouse button to apply the selected properties Interactive graphics display of the stiffener scantlings is available to assist the user in selection of stiffener types from the drop down list Pick the stiffener to display either from the drop down list or from the data table Step 3 Defining end connection To apply stiffener end connections select the End Connection tab and follow the same procedure as for applying stiffener scantlings In the Table tab under the Stiffener ID Convention dialogue area there is a check box End Conn Fwd To put end connections forward of the transverse frame or bulk head pick the check box otherwise leave it empty The default is heel fo
190. thod the hold number is controlled by the Hold No spin buttons You may use different options on the list to isolate regions that share the same end connection details rather than to have all frames displayed at the same time Step 4 Select end connection Select the required end connection from the End Connection Selection drop down list The selected end connection is displayed If the required end connection does not appear on the list it can be added to the list from the database via the Database button See 4 3 on databases If you want a particular end connection in the data table to appear in the drop down list double click that item in the table This avoids having to search through a long list 48 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 5 Assign end connection to transverse structure After selecting the desired end connection type from the list we need to assign this end connection type to the frame s that require s this change The current end connection types for the selected stiffener s at the specific frames are displayed in the data table Pick the frame to be changed with the left mouse button click the right mouse button to assign the change To select a range of frames at the same time click and drag over the range To select all the frames in the table pick the column heading If it is necessary to reverse the fore aft direction of the end co
191. tigue performance of the ship as a whole and for each plating area A Display Midship Section Option Min Max all Computed and use the hypertext links to identify the frames critical locations stiffener scantlings and associated end connections and LRSN curves for the deficient stiffeners G Display Midship Section Option Min Max Critical Location to zero in on each frame 4 Display View Plating Area All Frames to visually identify the frame locations and stiffeners for each plating areas for which the fatigue damage is dominant ay Display View Longitudinal Distribution to zero in on the plating areas and stiffeners 6 Print a sorted list of the fatigue performance of the longitudinals with a fatigue life less than the in service period and zero in on the data using the tabular and graphical data views Te On completion of the results analysis compile a list of the longitudinals requiring detail design improvements and their required LRSN curve to meet the FDA acceptance criteria as well as the screening zones required to generate the reduced FDA Options set 4 2 Tables and graphs cross reference To facilitate the assessment of the fatigue performance the user is encouraged to use the graphical displays to gain an appreciation of the performance of the structure Tabular display can then be used to assess the magnitude of the fatigue damage for the structural components identified during the graphical display analysis s
192. to be reversed i e the ship sails the passage from the arrival port to the departure port The Load Ref drop down list enables the loading condition for this passage to be specified Usually only Full Load or Ballast is available Note this is not the actual loading condition number given in the trim and stability book but a reference number allocated by the program These Loading Conditions correspond to those defined in the Project Manager The number of days Sailing Time can be defined This is the typical sailing time for this passage and forces the ship to take this time over this passage A value of zero will enable the ship to proceed at full speed for this passage otherwise the speed of the ship is adjusted so that the nearest matching speed in the ship motion results is used in the Voyage Simulation analysis NOTE For Routes which include a Floating Storage Unit location or Single Point Mooring type location ie a passage which consists of a single point and hence zero distance then the Sailing Time MUST be given This time will specify the length of stay at the fixed point For this calculation a zero ship speed is used A warning message is displayed if there is no Sailing Time specified for FSU location See also the Distance description above Lloyd s Register of Shipping 99 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 3 The Load time Unload box specifies the number of days loading and unloading
193. tress process The expected number of stress cycles is obtained from the stress process zero crossing frequency as follows ny Tvo where T seastate duration v zero crossing frequency The mean zero crossing frequency is defined as follows l m PETE 2T mo 5 3 Long term fatigue damage The long term fatigue damage can be obtained from the following expressions TB mQ K where T duration of the seastate Q stress level parameter eS Il Mm Wm m B So vo 2V2 omr gt 1 Lloyd s Register of Shipping 143 FDA Level 2 Software User Manual October 2002 Appendix A Section 5 6 amp 7 The total lifetime accumulated fatigue damage D over a specified period T is given as follows T B Q D K Q p Pj Pk P1 Q j k 1 where i number of loading conditions j number of ship heading to waves k number of speeds number of sea states Q 51 Stress level parameter for a given sea state Section 6 Voyage simulation The purpose of the Voyage Simulation module is to predict the probability of the ship encountering a particular seastate for the range of ship speeds ship to wave heading and loading conditions used for the fatigue assessment The seastate probabilities are extracted for each area of ship operation and combined with ship to wave heading probabilities and length of time exposed to each seastate to derive the total probability of the ship experiencing a
194. try 1 Pick the Midship Section Geometry tab From the Location drop down list choose the area where the midship section geometry is to be defined Three areas are listed e Midship Section Geometry e Cargo Hold Area Forward Bulkhead Geometry e Cargo Hold Area Aft Bulkhead Geometry 2 Choose Midship Section Geometry first After completing Steps 2 to 4 for this location proceed to do the same for the other two locations one by one The program will prompt you if you want to copy the midship section geometry as a starting point for defining the other two areas See Step 5 3 Proceed to the Midship Section Geometry dialogue area and enter all requested data Only half breadths are required since the ship is assumed symmetric about centreline If hopper side tank is present Height of Inner Bottom Side is taken at the hopper connection A Proceed to the Topside Tank dialogue area If topside tank is present click the check box Enter all missing information The following diagram may be used as guidance Lloyd s Register of Shipping 29 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Topside Tank Bottom Vertical above keel Inboard Side Hopper Side Tank Top above keel 7 5 Proceed to the Hopper Side Tank dialogue area Enter the requested information Step 3 Deck Geometry and Double Bottom Girders T 30 ShipRight FDA Double Hull Tanker Midship Section Geometry Deck Geometry gt r Lo
195. ttings are saved with the project between sessions but that unlike the Results Report Builder Templates only one copy of the Scantling Report Builder settings is ever available therefore you should always check that the settings are correct before printing in case they have been changed and saved by someone else Set Report Date 20 01 2003 X Preview Print All Close 4 48 Print FDA Report Chapter 4 Section 4 Select what information is to be included in the report by clicking the check boxes in front of each item These items are listed in the Scantlings tab and the Databases and Calculation tab Click the Select All button to check all the boxes or Deselect All button to remove all the checks The report date can be changed in the Set Report Date data box To view before printing commences click the Preview button Select an item from the list and then choose the Preview button to view it on Screen If you then wish to print the report select the printer icon displayed by the preview screen Project Notes Ship General Characteristics Loading Conditions MS Geometry and Structural Properties MS Deck Knuckles and Double Bottom Girders Primary Frame Spacing Preview Cargo Hold Frame Spacing Double Bottom Tank Floors Cargo Hold Frame Spacing Hopper Side Transverse Cargo Hold Frame Spacing Topside Tank Transverse Transverse Bulkhead Frame Spacing Water Ballast Tank Frame Spacing Hatch Dimensions
196. ttom From Centre Line Outboard Hopper Sloping Plate From Inner Bottom Knuckle Outboard along plating Inner Side Shell From Base Line Upwards Upper Sloping Plate From Inboard Knuckle Inboard along plating Longitudinal Bulkheads From Base Line Upwards Lloyd s Register of Shipping 9 FDA Level 2 Software User Manual October 2002 Chapter 2 Section 2 E Section 2 Starting ShipRight FDA After your FDA administrator has installed the software on your machine you will have a new menu group called Lloyd s Register of Shipping with two new program items ShioRight FDA and FDA Results Viewer Double click the menu item for ShioRight FDA The ShioRight FDA Splash screen will appear while the program is being loaded ShipRight FDA Version 2 5 Serial No IR FDA 9999 Curent User Loading Permissions File Please wait ise ion or distribution of this program or arg portion of it may result in severe civil and aiminal penalties and will be prosecuted to the maxim extent possible under the lav Global Wave Statistics Data supplied under license from BRIT Fhiid Mechanics Limited 1988 1999 2 1 Splash screen If you have not set the login name and password in the AUTOEXEC BAT file the program will request this information through the Login screen ShipRight FDA Login Name mj Password Cancel Note Passwords are not case sensitive 2 2 Login screen Enter your login name and password If the program
197. tton will display all invalid input OK returns to the dialogue screen 3 4 Framing The dialogue screens for inputing the framing arrangement and transverse structure of a bulk carrier and a tanker are slightly different The basic steps are the same There are five steps for bulk carriers and four for tankers The steps specific to bulk carriers are denoted by B the steps specific to Tankers are denoted by T Viewing options are available on these dialogue screens You can choose plan view or profile from the drop down list in the View dialogue area Clicking the right mouse button on the display area zooms in clicking again zooms out 32 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 3 4 1 Steps for defining Bulk Carrier Tanker Framing Step 1 Frame Spacing r Cargo Hold Region r No of Changes Dist from AP to Engine Room Bhd mm Frame No 39 Dist from FP to Na Bhd 13770 mm FrameNo 282 EE Primary Frame Spacing _ Check Values LBP 279 000 5 es LBP Check 279 000 an Profile 7j Frame Spacing Sec Frame Spacing Trans Eee Water Ballast Tanks Hatch Openings Accept changes and display the next Input Screen ShipRight FDA Cancel OK Next gt gt 4 20 Frame Spacing 1 Define the extent of the cargo hold region Pick the Frame Spacing tab if you are not already in this tab In the Cargo Hold Region dialogue area enter in the ap
198. tware User Manual October 2002 Chapter 4 Section 3 Step 4 Side Stringers T ShipRight FDA Double Hull Tanker Midship Section Geometry Side Stringers Location No of Side Stringers 3 afol Midship Section Geometry Z iomKeslmm Thickness mm 8625 18 5 14800 14 0 22900 14 0 Midship Section Type ae ee Side Stringers Section Etter Ready ShipRight FDA 4 17 Side Stringers 1 Enter the number of side stringers using the spin buttons The shelf plates need not be included In the first column of the data table enter the offset of these stringers measured upwards from the baseline In the second column of the data table enter their respective thickness Step 5 Section Editor T Section Data Location No of Points Cargo Hold Area Forward Bulkhead Geometry win secon te Haaman Petrie t Siestiges Section Eaton Ready _ShipRight FDA Cancel ok Newt gt gt 4 18 Section Editor 1 After completing the preceding steps 1 to 4 for the Midship Section Geometry proceed to do the same for the locations forward and aft of the cargo area From drop down list in the Locations dialogue area select Cargo Hold Area Forward Bulkhead Geometry his can be done under any tab EA Select the Section Editor tab The program then prompts you if you wish to copy the midship section geometry as a starting point for defining the geometry at this location You are advised to copy the midship ge
199. um fatigue performance criteria for a given stiffener and plating area Using the Sort Order menu bar item the data may be displayed as follows e ascending order of fatigue performance e ascending frame number e ascending order of critical location e Port first starboard second 124 Fatigue performance criteria value Stiffener Min Fatigue performance criteria Min Fatigue performance criteria critical location Min Fatigue performance criteria ship side Frame Plating area Stiffener Critical location ShipRight FDA Results Yiewer Longitudinal Deterministic Fatigue Performa File Edit Fatigue Options Plating Area Frame Options Sort Order Fatigue Damage Index for Outer Bottom on All Framings Sorted By Fatigue Life Select Stiffener 1 1 1 Max All Deterministic ates Critical Location Starboard Starboard Starboard Starboard Starboard Starboard Starboard Starboard Starboard Starhnard gt of Minimum Allowable LRSN 029 932 029 485 029 204 029 197 029 185 029 133 029 037 029 003 028 803 027 988 NP 77A E Fatigue Performance 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T 575 0 x 13 0 150 0 x 26 0 T RRN 190 15M PANT il Per
200. wn menu or the previous Input Data screen Enables the user to modify the displayed information e The More button displays the appropriate Passage Route or Trading Pattern input data screen when there is no currently selected item i e when all routes or passages are individually coloured e When a selected or highlighted Route or Passage is displayed the More button displays the appropriate Data Entry panel on top of the world map This enables Passages to be graphically modified see 2 1 2 Clicking Redrw redraw at any stage refreshes the screen with the current selections Specific areas of the world can be expanded through the use of the Zoom button on the top left Click and drag to define a box specifying the area to zoom into then click on the Zoom button Clicking All at any stage will redraw the complete world map with all the current Trading Pattern Routes or the whole Route or Passage Databases unless the More facility has been activated The scroll bar below the Zoom button enables the user to scroll oan the world map across the screen This allows the Pacific Ocean to be displayed in the centre of the screen The controls in the top right panel permit the user to alter the information displayed Trading Pattern Route Database or Passage Database Show Ports Only Show Selection 86 This option list changes the information displayed The end ports of each passage can be displayed by checking the Show Ports
201. wt and above Suezmax crude oil tanker 125 000 200 000 dwt Aframax crude oil tanker 80 000 125 000 dwt Panamax crude oil tanker 50 000 80 000 dwt Handy crude oil tanker 5000 50 000 dwt 148 Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura North Sea UK Norway Former USSR Black Sea Latin America Venezuela North Sea UK Norway North Sea UK Norway Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura USA Alaska W Africa Bonny W Africa Bonny W Africa Bonny Former USSR Black Sea Latin America Venezuela Latin America Venezuela Latin America Venezuela N Africa Libya North Sea UK Norway North Sea UK Norway Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura Persian Gulf Ras Tanura S Asia Ardjuna Indonesia USA Alaska Former USSR Ventspils Former USSR Black Sea Latin America Venezuela Latin America Venezuela N Africa Libya North Sea UK Norway North Sea UK Norway Persian Gulf Ras Tanura S Asia Ardjuna Indonesia Former USSR Ventspils Former USSR Black Sea Latin America Venezuela Latin America Venezuela N Africa Libya P R of China Qingdao S Asia Ardjuna Indonesia Far East Taiwan Japan Yokohama N America New Orleans W Europe Rotterdam N America New York S Europe Marseille S Europe Marseille N America
202. x The status box tells you for which stiffener the data table is displayed Step 3 Select method of introducing stiffener changes You have a choice of either displaying the current stiffener properties changing the stiffener by hold or by as many user defined changes as necessary A drop down list with these options is offered Display Current Values Change By Hold User Defined Changes If the Change By Hold method is selected a data table is displayed allowing a different section type for each cargo hold also allowing offsets at the two ends of the each hold If the User Defined Changes method is selected then the number of changes is controlled by the Scantling Changes spin buttons You have to enter the start and end frames and their respective offsets for each change The Display Current Values option does not allow changes to be made Step 4 Retrieve required stiffener properties from database In the Stiffener Selection dialogue area select from the drop down lists the section type section scantling and material type To assist the user in identifying the correct stiffener a sketch of the stiffener is displayed under the End Connection Details tab 50 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 3 Step 5 Assign the section properties to the stiffener The current end connection types for the selected stiffener s at the specific frames are displaye
203. x Section 1 ShipRight Fatigue Design Assessment procedures As part of the ShipRight design construction and lifetime ship care procedures Lloyd s Register LR has developed and introduced a Fatigue Design Assessment FDA procedure which provides a multi level evaluation of the fatigue performance of hull structural details It is applied in conjunction with LR s Structural Design Assessment SDA and Construction Monitoring CM procedures The FDA procedure is applied on a mandatory basis to the structural arrangements of all new oil tankers and bulk carriers over 190 metres in length in order to obtain the necessary confidence level in the configuration and details of the structure It is also applied to other ships where the type size and structural configuration demand The procedure comprises three possible levels of assessment e Level one For the level one assessment the structural details and critical locations are identified and evaluated using the Structural Detail Design Guide e Level two The level two approach is a simplified spectral direct calculation procedure which utilises LR PC based software This procedure has been derived from experience in applying the level three fatigue assessment e Level three The level three approach is a full spectral direct calculation procedure based on first principles computational methods such as ship motions loads and finite elements A diagrammatic illustration of the calculation pr
204. y 62 ShipRight FDA Stiffener Library Library Group r Currently Selected Dtiffener Type FDA2 Test Stiffeners Inverted New Group Delete from Library Browse V Show count on Copy Stiffeners in Current Project A 63 0 x 51 0 x 9 3 3 3 1A Stiffeners in Library Group 63 0 x 51 0 x 4 6 4 6 IA 76 0 x 51 0 x 9 4 9 4 1A 76 0 x510 x11 1 11 1 l Copy gt gt lt lt Copy 300 0 100 0 x 9 514 014 300 0 x 100 0 x 10 5 15 0 14 300 0 x 100 0 x 11 5 16 014 300 0 x 100 0 x 12 5 17 0 IA 350 0 x 120 0 x 9 5 15 0 14 76 0 x 63 0 x 7 9 7 9 1A zl 350 0 x 120 0 x 10 5 16 0 IA Standard Library Custom Library list of the Stiffeners currently in your project Drag with the mouse or use Ctrl Click to multiselect items ShipRight FDA FDA Library Path C Program FilesLloyd s Register of 4 54 Stiffener Custom Library Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 ls Select the Library button from the Stiffener Database dialogue screen The Stiffener Library dialogue screen appears If ShioRight FDA cannot locate the library file fdalib mdb in the datapath specified in the global options see Ch 3 3 use the Browse button to locate this file Pick the Custom Library tab Z The stiffener type is shown in the Currently Selected Stiffener Type dialogue area The Library Group list box displays all the customised groups To create a new group
205. y default This can be changed in the ID of First Stiffener data box in order to be consistent with the drawings ID of each subsequent stiffener in the same group is then incremented or decremented by 1 This is controlled by the options list in the Stiffener ID Convention dialogue area Choose either Increasing ID No s or Decreasing ID No s 4 In numbering stiffeners for a plating area it is common to include girders and stringers To remove this option deselect the check box Include Girder Stringer The convention for stiffener ID is a three integer code For example stiffener ID 10 3 4 represents stiffener with given ID i e ID of first stiffener number 10 in the plating area which is the 4th stiffener in stiffener group 3 5 Select the current group to be defined using the Current Group Number spin buttons Go through each stiffener group in the current plating area until all stiffeners are defined for all plating areas 6 Enter the number of stiffeners in the current group using the Number of Stiffeners spin buttons ie Enter the offset from the reference point for the first stiffener in the group in the Stiffener Offset Dimension data box The offset for the first stiffener in the group is measured from this reference point The offset for the first stiffener in each succeeding group is measured from the last stiffener of the preceding group The following table summarises the reference point for stiffener groups in each plati
206. y an LR Group entity for i any information or advice expressly or impliedly given by an LR Group entity ii any omission or inaccuracy in any information or advice given or iii any act or omission that caused or contributed to the issuance of any certificate statement data or report containing the information or advice Nothing in these Terms and Conditions creates rights in favour of any person who is not a party to the Contract with an LR Group entity Any dispute claim or litigation between LR and the Client arising from or in connection with the Services provided by LR or any Contract with LR shall be subject to the exclusive jurisdiction of the English courts and will be governed by English law Any dispute claim or litigation between the Client and any entity in the LR Group that performs services as provided for in Paragraph 2 shall be subject to the jurisdiction of the courts in the jurisdiction in which that LR Group entity is located and will be governed by English law including the provisions on the recovery of legal costs Notwithstanding the foregoing if the Client asserts or initiates any dispute claim or litigation against an entity in the LR Group in any proceeding in which LR is also named as a party or that arises in whole or in part from the subject matter of a dispute claim or proceeding that also has been asserted or initiated against LR that dispute claim or proceeding shall be subject to the exclusive juri
207. you want does not reside in one of these libraries it can be created very easily The program also allows you to create your own customised libraries of frequently used stiffener sections and end connections You can access the stiffener end connection and material databases via the Database button located in the Midship Section Stiffener and Midship Section Stiffener Details dialogue screens This allows you to create stiffeners end connections and materials when they are needed The S N database is provided for reference purposes only Lloyd s Register of Shipping 59 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 To summarise there are three categories of database 1 Standard database 2 Custom database 3 Project database Standard Custom Database copyt Database copy to copy to and from Project Database 4 3 1 Types of stiffener ShipRight FDA allows six types of stiffeners three rolled sections and three fabricated sections Rolled sections Inverted angles Tee sections Bulb plates Fabricated sections Symmetric Unsymmetric Flat 60 Lloyd s Register of Shipping FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 4 3 2 Adding a new stiffener to the project database ShipRight FDA Stiffener Database Pon me C Fabricated E 350 0 x 100 0 x 11 0 17 0 1A Section Peoperties Iput Dimensions Web Depth m l 350 00 mm Flange Width ri 100 00 mm
208. z DA Default BEERA Blast HOM ecru einen nena nna Voyage Simulation f 100 A1 Fatigue Wave Environment User Defined Trading Routes FDA Options FDA Screening Select existing FDA Options from the drop down list ShipRight FDA 4 61 FDA Computational Options 4 4 1 Choosing an FDA option Pick the FDA Options tab if you are not already in it The FDA Option Name drop down list tells you what FDA screening options are available For default computation pick FDA Default from the list When the default is chosen the Voyage Simulation option list is set to 100A1 Fatigue Wave Environment To add a new option pick the Add button Enter the name of the option in the data entry box Proceed to define the screening Zones Lloyd s Register of Shipping 69 FDA Level 2 Software User Manual October 2002 Chapter 4 Section 4 4 4 2 Defining FDA screening zones 1 To see the extent of computation performed under the chosen FDA option pick the FDA Screening tab SA ran an ah ae ak aes FDA Options i FDA Screening Currently Editing Test Ballast Hold ShipRight FDA 4 62 FDA Screening 2 If the FDA default is chosen only one screening zone is allowed All plating areas for the whole cargo area are included in that zone If a user defined FDA option is chosen you can have up to 15 screening zones O To add a screening zone use the Add Remove Screen spin buttons to control the number you need A data table with o
209. ze Bulk Carrier Test Ship Date 10 01 96 KS Shiptitle FDA2 Bulk Carrier Yad FAB3 Dwg 1 Cs Shipbuilder FDA Team Initials FPG Rey A CA AROOTFDASBULKER SAMPLE LR ADD ASG ShipRight Strategic Research amp Development 7 1 Voyage Simulation View Menu Display Allows viewing of the Trading Pattern World Map Routes and Passages available Results Allows viewing of the results from the Seakeeping Criteria Voyage Simulation and a Polar Plot Print Results Allows printing of the results computed for the Seakeeping Criteria Analysis and the Voyage Simulation 2 1 Display World Map The Display World Map option on the View pull down menu reveals a fly out menu with the following options Trading Shows the World Map with the Trading Pattern Patterns selected Route Shows the World Map with the Route Database Database selected Passage Shows the World Map with the Passage Database Database selected Several screens in the Voyage Simulation system allow access to this display through the use of the Display button on these screens All the Display World Map options result in the screen as shown in 7 2 Lloyd s Register of Shipping 85 FDA Level 2 Software User Manual October 2002 Chapter 7 Section 2 7 2 Display World Map The panel at the top left provides general control facilities Help OK More Redrw zoom All Provides on line help as does the F1 function key Returns control either to the pull do

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