TrussMaster - User Manual
Contents
1. respectively on TrussMaster Truss Display lola je File Drawing Tools Window Help 8 x DM Swe5 100 0 la 4 3 4 _ 5 0 40 30 20 H 0 Minimise Control Board Member Data EValue 200 a Sonas Deflection Scale a Area 10687 feg 1 101215 1mm Forces Scale Node Data 74 5 kN m Node Load kN for nodes x o o fr35 o Show Reactions Show Member Forces I Show Deflected Shape Y Show Supports Line of m nodes inclusive xim yim v Show Loads From 0 n MV Show Grid enerate v Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 Iv Show Member Nos x 0 94 y 0 00 Pan Mode Analysis Done TrussMaster www colincaprani com The program adopts the Cartesian coordinate system so the y axis runs positive upwards and the x axis positive to the right Note It is also possible to define loads at inclined angles by entering the node properties dialog window As described in section 4 8 above 52 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Secondly the user has to define the self strained forces which occur in the member no 3 To determine this force the user must calculate this prestressed force themselves and enter the value into the User Input grid The location for entering this prestress force is in the Member Data grid acc2. eo ES B amp File Drawing Tools Window Help MEMBERS Nodei Nodej E kN mm2 Aimm2 PS kN os ode i ode j rnm mm 7 1 3 1 E Value 200 5 members Animate 2 2 3 A Bo Deflection Scal 3 3 1 rea BO feg 1101215 N y Forces Scale Node Data E 536kN m v Node Load kN for nodes 8 OK s fo y f10 135 Show Reactions 10 Show Member Forces u Line of n nodes inclusive E po ae Snape 13 7 xim y m v Show Loads From 0 D n v Show Grid enerate Iv Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 Y Show Member Nos x 2 74 y 1 76 Draw Member No Analysis TrussMaster www colincaprani com A The two physical properties that need to be determined are Young s Modulus E and the member cross sectional area A Important Failure to define these properties for members will result in the structure being unstable By clicking on the Member Data button below the Data Input Grid on the Control Board allows the user to check if these properties have been correctly assigned which is also highlighted above 51 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Define Loads The loadings are entered by the user in the User Input Grid under the columns ForceX and ForceY which define loads in the horizontal and vertical directions
3. 1 2 The User Manual Purpose This User Manual has been written to explain the use of the TrussMaster program and to explain its capabilities and limitations It explains the user interface the required input information and the output information This manual does not explain the stiffness method in detail or the equation solution procedure used Gauss Elimination Conventions Menus Menu commands are written as Drawing gt Animate And mean the user should select Simulation from the Configuration menu as shown Keyboard The use of shortcut keys is indicated as Ctrl I F5 F3 zoom Extents F4 F6 And means that the user should press the Control and TP keys simultaneously Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Notices Points of significant importance are denoted as Important Typically failure to adhere to these points will result in unexpected behaviour or a program crash 7 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Glossary User Input Grid The area which the user will input most of the data to construct the 2D truss The same area will display valuable information once the truss is analysed Truss Display The area where the truss is visually displayed displays node and member location support conditions and loading conditions Stiffness Equations The display where the force vector global stif
4. Force Vector Global Stiffness Matrix Displacement Vector DOF Force kN 4 TERES ESSERE NS 2 2 Nh EN RG A Ta DOF Disp mm 4 1x 1x ly 1y 2x 2x 2y 2y 3x 3x 3y 3y 4x 4x 4y 4y 5x 5x 5y 5y 5x z x 5x By By Tx 7x vy y 8x 8x 8y 8y 9x 9x 3y 3y 10x 10x 10y d 10y 10v a n 11v Control Board x 1 55 y 4 43 Pan Mode Analysis Done TrussMaster www colincaprani com To begin using this function of TrussMaster firstly the user will select the Show Force button this will show the force vector containing the appropriate forces on the corresponding nodes 56 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 TrussMaster Stiffness Equations File Drawing Tools Window Help EWH ga Show Force Add Member 1 Force Vector Global Stiffness Matrix Displacement Vector 4 D 0 D D D D 0 D Control Board x 1 55 y 4 43 PanMode Analysis Done TrussMaster www colincapranicom 4 The global stiffness matrix is the second step in the process At this point the user can complete the global stiffness matrix by e Adding each member individually This method allows the user to see the contribution each member makes to the global stiffness matrix e Pressing Show Global K button This allows the user to see the global stiffness matrix with all member contributions accounted for Either way yields the s
5. a k EA cosasina sin a cosasina L co a cosasina costa cosasina sin a cosa sin a Prestress Forces Prestress forces from different sources are e Lack of Fit pome L Where AL the lack of fit Lo Original length of member e Temperature Change F EAGAT Where a coefficient of thermal expansion AT change in temperature cosasina cosa sin amp sin a 1 2 44 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 8 2 Appendix 2 Tutorial Introduction The usual procedure followed when using the program is l NO 0 N A 4 A W N determine layout of nodes on grid place members between nodes on grid Assign physical properties to members in frame Assign support conditions to nodes of choice Place loads on nodes of structure Run analysis of structure Read off member forces and force direction on truss display View global stiffness matrix of structure in stiffness equations display Determine displacement of nodes of structure from applied loads The following tutorial is illustrates the solution of the 2006 2007 Semester 1 Exam question on the topic of Stiffness Matrices 45 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Problem Question 1 Semester 1 2006 7 1 Using the stiffness method determine the displacement of the joints and the forces in the members of the pin joint
6. into account self strained structures Allows the user define the Young s Modulus and cross sectional area for members in the truss Simulate up to three different types of supports Output member forces stresses and reactions in truss under loading Output nodal deflections in truss under loadings Allow user visualise the deformations the truss goes under by animating the loading process Use the Stiffness Method to determine nodal displacements of truss Output Force vector Global Stiffness matrix and Displacement vector for user to visualise the Stiffness Method process 13 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Limitations TrussMaster is not able to Analyse three dimensional structures Analyse Beams or Plane Frames Calculate prestress forces Apply loading between truss nodes Generate output reports 14 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 4 The TrussMaster User Interface 4 1 Introduction The TrussMaster program has a Single Document Interface SDI This means only a single TrussMaster file can be opened at any one time similar to the way Notepad in Windows operates The menu and toolbar commands whilst being specific to the program are operated in the same way as standard Windows programs Of note for ease of use there is extensive support for keyboard shortcuts in TrussMaster 15 Colin Caprani 2010 TrussMaster
7. v3 User Manual Version 1 0 4 2 File Menu File gt New Opens a new TrussMaster file with the default settings selected File gt Open Open an existing TrussMaster file File gt Save Save the current file File gt Save As Save the current file under a new name File gt Exit Close TrussMaster Drawing Drawing gt Refresh Updates the screen display with the grid data and redraws Drawing gt Animate Animates the truss deflection under the loads for ease of interpretation Drawing gt Zoom out Current view of grid is increased Drawing gt Zoom extents Changes the drawing scale such that the whole structure is visible Drawing gt Save picture Saves the current view to user defined bmp file 16 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Tools e Tools gt Analyse Analyzes the truss for the member forces and nodal deflections e Tools gt Results Not currently implemented e Tools gt Truss Generator Not currently implemented e Tools gt Options Displays the progam Options dialog Window e Windows gt Truss Display Shows the truss display window e Windows gt Stiffness Equations Displays the stiffness matrix calculations view Help e Help gt TrussMaster Help Not currently implemented e Help gt About Displays information about the copyright developers and program version 17 Colin Caprani 2010 TrussMaster v
8. 0 To use one of the above supports enter the number corresponding to the desired support type above Next press F5 or use Drawing gt Refresh to update the screen display with the new grid information 5 TrussMaster Truss Display de File Drawing Tools Window Help 5 x Osa isos 13 0 Minimise ControlBoard JOINTS m yim Forcex kN Force kN 5 decia xim yim orci orce upport a z 1 5 7 5 E Value 200 for members PTUS 2 6 0 3 peaoe 13 Ok aj Area 26406 MU Deflection Scale a 3 3 3 eg 1 10 12 15 10mm 4 6 3 3 3 IAE 5 orces Scale a z Node Data 59 6 kN m El E Node Load kN for nodes 8 g fo n f135 o Show Reactions 10 Show Member Forces 11 inclusi Show Deflected Shape E Line of m nodes inclusive V Show Supports 13 z x m y m V Show Loads From 0 S IV Show Grid enerate iv Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 v Show Member Nos x 2 97 y 2 11 Draw Member No Analysis TrussMaster www colincaprani com Define Member Properties The next step is to assign the members physical properties from the member data block on the control board which is highlighted below on the control board 50 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 ah TrussMaster Truss Display
9. 2 Desktop My Documents My Computer File name truss picture w My Network Save as type Bitmap files v Cancel Places Control Board x 1 15 y 0 22 Pan Mode Analysis Done TrussMaster www colincaprani com As per the above image the user can select the filename and location where the Truss Display picture will be saved 41 O Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 7 FAQs and TroubleShooting 7 1 FAQs First please check the program website www colincaprani com programming trussmaster If your problem is not solved here please forward your query to trussmaster colincaprani com 42 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 7 2 TroubleShooting As this is the first major release of this program it is likely that there are some bugs and inconsistent behavior Please check the TrussMaster website for some possible solutions If the problem persists please send a copy of the t rm and the exact steps to reproduce the problem Please also include your system setup information Please send this information to trussmaster colincaprani com It is envisaged that this section of the document will be updated frequently as the program matures 43 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 8 Appendices 8 1 Appendix 1 Stiffness Method Truss Element Stiffness Matrix cos a cosa sin c cos
10. 3 User Manual Version 1 0 4 3 Toolbar The TrussMaster toolbar is as follows TD DOT iier la The buttons above provide a shortcut to the menu commands as follows New File gt New Open File gt Open Save File gt Save Truss Generator Tools gt Truss Generator not currently used Run Analysis Tools gt Analyse Save Picture Drawing gt Save Picture Options Tools gt Options About Help gt About 18 O Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 44 Shortcut Keys Support for shortcut keys is included in TrussMaster Some commands are only accessible through the keyboard and mouse F1 Tools gt Analyse F2 Drawing gt Animate F3 Drawing gt Zoom out F4 Drawing gt Zoom extents F5 Drawing gt Refresh F6 Drawing gt Save picture Esc Changes cursor mode to Mouse Mode from TrussMaster v 3 0 1 19 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 45 Truss Display Interface The region in which the truss is displayed is termed the Truss Display In this display the user can be in any one of a number of Screen Modes which are accessible through the right click menu ah TrussMaster Truss Display lole jS i File Drawing Tools Window Help a x De Sa Pp 1 0 2 0 40 5 0 6 0 6 3 0 10 0 11 0 1120 Member Data JO
11. 3 User Manual Version 1 0 e Force direction e Reaction direction e Deflected shape To make it easier to visualise certain results the user can select and deselect each of these as shown on the bottom right of the screen The more detailed numerical results are shown in the User Input Grid as follows Joint Results e Displacement in x direction mm e Displacement in y direction mm e Force in x direction kN e Force in y direction kN JOINTS Def x men Def y mm Forcex kN ForceY kN 0 0 0 0 75 75 0 0 0 0 25 25 2 5 5 0 0 0 0 0 50 Member Results e Force kN e Indicate whether member is in tension or compression T C e Stress N mm e Displacement mm MEMBERS Force kN Tort s N mm2 dL mm C 106 07 250 0 5 303 35 36 C 83 333 1 768 50 0 C 166 667 2 5 55 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 The user can also access these results through the Member or Node Properties dialog boxes Stiffness Equations Display Upon selecting the option stiffness equations the below display will meet the user d TrussMaster Stiffness Equations eit B File Drawing Tools Window Help 8x DER a Ala Show Force
12. INTS x m yim ForceX kN ForceY kKN Support Es for members IE 1 aue 200 ha 7 18 OK 2 gt rea 1000 ea 110 1215 Deflection Scale a 100 mm mm 5 Forces Scale ES Node Data 93 1 kN m e 7 Node Load kN for nodes 8 a ok 9 jo vj fis n Show Reactions 10 Show Member Forces Line of m nodes inclusive z H oe Shape 13 zim v m Iv Show Loads From 0 0 G V Show Grid enerate V Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 v Show Member Nos x 842 y 2 49 Pan Mode No Analysis TrussMaster www colincaprani com The image above shows the Truss Display above the maximised Control Board the two solid lines indicate the x and y axes in the truss display The dashed gridlines indicate the user defined grid 20 O Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Screen Modes The screen modes are e Mouse Mode This is the default mode upon opening the program and is superseded by the user selecting any of the alternative modes It may be re entered by pressing the Esc key from TrussMaster v 3 0 1 and on e Pan Mode Allows the user to move the centre of the display to view different parts of the structure e Draw Nodes Mode Selecting this option will allow user to place joints or nodes at intersections of the user defined grid e Draw Members Mode This allows the user to create members between nodes previousl
13. TrussMaster v3 User Manual Version 1 0 TrussMaster Educational Truss Analysis Software Version 3 a Big Truss 2 trm Truss Display oC x eat File Drawing Tools Window Help S85 x 064 3062 Minimise Control Board Member Data x m vim ForceX kN Force kN Su for members Ani 0 E Value ag i T nimate 1 0 0 0 Area 1000 ox Deflection Scale 4 2 0 0 0 EMM 200mm mm 3 0 0 0 B 5 gt 4 0 0 0 orces Scale 5 o o T Node Data 195 kN m E 6 0 0 0 Node Load kN for nodes 7 0 0 0 4 ha ok 8 0 0 fo y fro fiz a Iv Show Reactions 0 1 0 0 M Show Member Forces 1 1 0 0 7 V Show Deflected Shape 7 j o 0 Line of m nodes inclusive IZ Show Supports 3 1 0 0 zim yim lv Show Loads From 0 0 a M Show Grid _ enerate Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 Show Member Nos x 3 21 y 2 64 Draw Member Analysis Done TrussMaster www colincaprani com User Manual Dublin Institute of Technology Ireland 1 O Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Acknowledgements This program has been developed over 10 years from 2001 by Dr Colin Caprani In 2010 support for further development for use in educating students on truss analysis and the matrix stiffness method was obtained through the DIT Teaching Fellowship Awards Neal Renehan a postgraduate student assisted with bug testi
14. a and Node data This area allows the user to designate the values for Young s Modulus and cross sectional area for each individual member in the truss It also allows the designation of loads of the same value on more than one node and also draws a sequence of nodes of equal spacing Linear node generation This function allows the user to draw a linear sequence of nodes in one step The user specifies how many nodes they want and the location of these nodes an TrussMaster Truss Display MEN GR File Drawing Tools Window Help alx Lamp L 1 0 10 20 30 40 50 60 g0 80 80 10 115 I Minimise Control Board Member Data JOINTS x m yim ForceX kN ForceY kN Support Ee for members Anm 1 D 0 aue 1200 Ras Animate a 1 35 OK 2 1 0 Area 1000 Li Deflection Scale 3 E leg 1 10 12 15 DO Pr DES 7 4 5 4 0 Forces Scale E gt Node Data 10kN m zl 7 B 0 Node Load kN for nodes 8 0 OK g 8 0 fo fro fras ox Show Reactions 10 g 0 Show Member Forces 5 10 0 Line of mn nodes inclusive z a cee Shape 13 zim yim Show Loads From 0 0 Seal IV Show Grid Generate Z Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 v Show Member Nos x 6 18 y 2 62 Pan Mode No Analysis TrussMaster www colincaprani com In the above screenshot i
15. ame result of course 57 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 File Drawing Tools Window Help ex DEB 3 27 Show Force Add Member 1 Restrict DOFs Force Vector Global Stiffness Matrix Displacement Vector Force kN o oo0oososoo Control Board x 1 55 y 443 PanMode 1 Analysis Done e TrussMaster www colincapran com At this stage the global stiffness matrix does not account for the restraints which the supports provide to the structure The button Restrict DOFs applies the support restraints to the entries in the global stiffness matrix MA ecu INNEN DL m 88 File Drawing Tools Window Help Da Eg 3w2i Show Force Add Member 1 Show Global K Force Vector Global Stiffness Matrix Control Board x 1 55 y 443 PanMode Analysis Done olincaprani com 58 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Once the user has completed the above steps they can press the Solve button and determine the Displacement Vector EA TrussMaster Stiffness Equations p A AR ul i 2 r talak BB File Drawing Tools Window Help DEBE sea Show Force i E Show Global K Restrict DOF Force Vector Global Stiffness Matrix e e 3 D D D 0 4 D D D ooSBooooo lolojojojojojo gt Cont
16. can e set the connectivity i e identify the nodes it connects to for each member placed in the truss display e setthe material and geometric properties for each member e define any prestress force in a member 37 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 5 4 Editing Editing data already entered in TrussMaster is reasonably straightforward Deleting Deletion of nodes or members can be done in two ways 1 In the input grid select the row corresponding to the node or member Right click and select Delete from the right click menu or press Delete on the keyboard Next right click again and select Compress This will remove zero rows from the input grid 2 In the Truss Display right click and select Delete from the menu then select whatever feature you wish to delete Multiple deletions can be carried out successively Moving Nodes through the grid Once a truss has been analysed it is possible to move the node by selecting the nodes coordinates columns in the joint data tab By entering new coordinates into these cells and refreshing the display Drawing gt Refresh or F5 the node will have moved to the new position 38 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 6 TrussMaster Output 6 1 Introduction TrussMaster has the ability to output large amounts of information Especially for trusses which contain a large amount of members and nodes The output data
17. ed truss shown in Fig Q1 allowing for 1 The 100 kN vertical load as shown and 11 A lack of fit of member 12 which was found to be 5 mm too short upon arrival at site and which was then forced into place Take EA 2x10 kN and the cross sectional areas of the members as Members 12 3A Members 13 and 14 32A 25 marks 3m 3m FIG Q1 The solution to this problem using TrussMaster follows 46 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Define Truss Geometry Once TrussMaster is open the user will be met with the following screen e TrussMaster Truss Display File Drawing Tools Window Help Joints Data Member Data Joint Results Member Results x 425 y 1 93 Pan Mode No Analysis Member Data for members E Val alue 200 B3 ej Area 26408 feg 1 101215 Node Data Node Load kN for nodes lt o spo fas Line of m nodes inclusive x m y m From fo o To fio fo Generate Animate Deflection Scale 100 mm mm Forces Scale E 536kN m 7 V Show Reactions M Show Member Forces IV Show Deflected Shape Show Supports IV Show Loads Y Show Grid IV Show Node Nos V Show Member Nos TrussMaster www colincaprani com The first step to drawing a structure is to determine the layout of the nodes i e joints of the s
18. essed by clicking on the Member Data tab under the User Input grid mm TrussMaster Truss Display cnius n File Drawing Tools Window Help e x DG A amp G 59 Minimise Control Board Member Data MEMBERS Nodei Nodej E kN mm2 A mm2 PS kN 4 RUE 1 3 1 200 424 254068 EValue 200 2 NE Animate 5 3 200 24 254009 Area QE y DOR 3 3 4 200 300 100 leg 1 10 12 15 eee z i Forces Scal 5 Node Data orces scale 6 59 6kN m Node Load kN for nodes fo sfo f35 ox Show Reactions A A A gt _ gt Show Member Forces I Show Deflected Shape cT eo eo o EX Line of m nodes inclusive 12 V Show Supports 4 x m y m Iv Show Loads From 0 D 2 v Show Grid enerate Y Show Node Nos Joints Data Member Data Joint Results Member Results To f10 0 Iv Show Member Nos x 0 37 y 3 47 Pan Mode No Analysis TrussMaster www colincaprani com The above highlighted column indicated the location where the user enters the values for each of the member s prestress forces Important Defining the prestess force with the correct sign is of major importance failure to do so will still yield an answer but an incorrect one 53 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 The user must recognise that the fore is being applied to the truss i e stage 2
19. fness matrix and deflection vector are displayed Control Board Section on the User Interface where the user will enter all of the input data and edit the truss in the truss display 8 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 1 3 Release History TrussMaster Program TrussMaster Manual Version Version Date Description 1 0 Aug 2001 e Initial release 2 0 May 2008 Many changes pan zoom data entry 3 0 Sept 2010 Added educational features Improved interface stability Increased functionality delete compress Improved analysis prestress supports Output picture grid data copy Date Description 1 0 Sept 2010 Initial release 9 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 2 Installing the Program 2 1 System Requirements The program has been tested on Windows XP and Vista It is expected to run on Windows 2000 and Windows 7 also The program is a single threaded application and so cannot take advantage of multi core processors Therefore for maximum speed prefer a computer with a fast single processor over a computer with a multi core slower processor 10 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 2 2 Installation To install the program carry out the following steps 1 Extract the zip archive to a folder 2 In that folder double click on the file Setup exe 3 Follow
20. in the theoretical analysis Analysing the Structure Once all geometry supports properties and loads have been defined the truss may be analysed Use F1 Tools gt Analyse or run analysis button on toolbar to execute the analysis TrussMaster Truss Display EMISIT Eb File Drawing Tools Window Help Dc 5 5 a x 100 0 i 30 0 1 3 0 0 0 a A i RE E TA 1 Jl i 2 7 EOS 06 1 hi 5 4 Se rou Ie N ep l AS p D 4 0 30 20 1 0 DO 1 0 0 0 5 0 a2 D 190 110 0 Minimise Control Board Member Data yim ForceX kN ForceY kN Support a dioses 0 3 E Value 200 T Animate D 3 Area 10687 Deflection Scale 2 100 z I COSI 100 mm mm y Forces Scale a Node Data 74 5 kN m iz Node Load kN for nodes x o sfo 135 x M Show Reactions A gt gt M Show Member Forces z a 3 IV Show Deflected Shape Line of m nodes inclusive Fi Show Supports sim y m v Show Loads From 0 0 E IV Show Grid de Y Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 V Show Member Nos x 2 38 y 0 68 Pan Mode Analysis Done TrussMaster www colincapranicom Following the analysis TrussMaster will display the structure with the following results displayed e Member forces 54 Colin Caprani 2010 TrussMaster v
21. isplayed e Panel 3 The current status of the analysis on the structure 30 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Node Properties Dialog The Node Properties dialog is accessed by clicking on a node when in Select Node screen mode ia Node Details E Properties Results if available Specify Node Load Value Units Node No Force 10 kN x def mm Ange 45 degrees y def mm Overwrite previous loads C Add to previous loads my Delete node The node properties dialog window gives the user Properties e Node locations in x and y axes e Forces on the node in the x and y direction e Supports conditions in the x and y direction Results e Will return resulting deformations in the x and y direction if available Specify node load e This option allows the user define loads action on the node selected which are at an inclined angle 31 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Member Properties Dialog This dialog can be accessed by clicking on a member when in Select Member screen mode B Member Details X Properties Stiffness Matrix Results if available Stretch Delete member The member properties dialog window gives the user Properties e Member number and location of members nodes in the x and y location e The Cos and Sin of the member s angle with the x axis e Physical prope
22. n 1 0 a TrussMaster Truss Display a File Drawing Tools Window Help Minimise Control Board Member Data MEMBERS Nodei Modej E kN mm2 A mm2 PS kN a for members ERE TEES gt i E Valoe 20 a Animate DK 2 2 3 Area gt Deflection Scale a 3 3 4 26406 eg 1 10 12 15 Me Ep a 4 5 Forces Scale z Node Data 59 6 kN m E 7 Node Load kN for nodes 8 R38 g Ro fio fas ox M Show Reactions 10 Nn M Show Member Forces 11 Line of m nodes inclusive E Dim RUN uo 12 13 m xim yim V Show Loads From 0 D A i M Show Grid aS v Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 Iv Show Member Nos x 2 77 y 0 24 Draw Member No Analysis TrussMaster www colincaprani com Supports The next step is to define the type of supports for the structure these can be entered in the input grid under the column support to the corresponding nodes shown highlighted in the below picture There are three types of supports available to the user in TrussMaster these are 1 Horizontal roller restraint provided in the y direction only press 1 2 Vertical roller restraint provided in the x direction only press 2 3 Pin support restraint is provided in both directions press 3 49 Colin Caprani 2010 TrussMaster v3 User Manual Version 1
23. nderstanding of the stiffness method of analysing structures one of the features of TrussMaster is to display step by step how the stiffness method works for the structure being analysed Bi Q1 R 0607 trm Stiffness Equations E bs loas Ht File Drawing Tools Window Help Dae taAa Force Vector Global Stiffness Matrix Force kN x 75 75 y 484 PanMode NoAnalysis TrussMaster www colincaprani com Control Board There are five buttons located in the Stiffness Equations Display which carry out the following functions 1 Show Force Displays the Trusses Force Vector 2 Add Member Enters each members stiffness matrix into the Global Stiffness separately 3 Show Global K Automatically shows the trusses Global Stiffness Matrix 4 Restrict DOFs Imposes the structure restraints upon the Global Stiffness Matrix according to the supports used 28 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 5 Solve Solves for the Displacement Vector Use of this facility follows these rough steps 1 On entering display the force vector for the structure Note that this will include any nodal loads necessary to account for member prestress 2 Each member can be successively added to the Global Stiffness Matrix This allows the student see how each member contributes 3 At any time the user can proceed to complete the filling of the Global Stiffnes
24. ng and the preparation of this user manual For further information please contact trussmaster colincaprani com Dr Colin Caprani www colincaprani com September 2010 2 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Contents jin A 5 LT TheTr ussMaster PIO CRA Aia 5 EZ The User Maia aaa 6 3 Release HIStory E E RE e DN va E E RE o ED Led 9 2 Installing the PIN aabt 10 2 1 System Requirements is sse eto tet taste Ee ees dottor elena Eee e 10 Ded a oro ost conquer depu A as ep eee aes 11 di AbouLTrussMastGtE c sscisesiecdsscsdssssvesaced c dnsssaesdscedcadsnsbacossuaueasddvavatsaviecsecd 12 S IDO da 12 3 2 TrussMaster Capabilities and Limitations esses 13 4 The TrussMaster User Interface eee e eiecit eese eese teen netta enun 15 AM IO CIO ca ebore ttiam dnas tede estais te mito edu ud 15 42 MMU ater oid eei aoro accua 16 AD TOOGA erased tetas E RN EMEN 18 JA A KEYS A etico beste eters cared care duse laste ui nta ev Ed 19 ds Tr ss Display Interface usina std an 20 4 6 Control Board iicet REPE S ia And e E be nae 23 4 7 Stiffness Equations Displays e cat ub roa Eh a EI Tds 28 4 5 Other Display Elements eio taedet a tonto o ud 30 5 Data Input and Edi iie eid tee e eiTe 35 A o AM O A E 35 5 2 INOS ANA Sa oce nt eee uter a eea A a a anaa 36 Spot Member DA ai 37 Sr M aU 38 6 Tr ussMaster Oido iento 39 OL InfrogdUCLIOBs isset ta
25. on The output from TrussMaster is only of use if the input data is representative of the truss of interest The user must run the program to get results that may be compared to the calculations carried out by hand The user can then easily alter the truss by editing the member s properties adding of additional members or taking members out and adding additional loads or removing loads 35 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 5 2 Node Data Selecting the Joints Data tab gives the user the following grid for input JOINTS x m yim Force kN Force kN Support Joints Data Member Data Joint Results Member Results In this grid the user can e specify the location of nodes placed by the user by giving the x and y coordinate of the node e define the loading on the nodes by entering values into the ForceX and ForceY columns e define the support conditions for each node in the truss enter a 1 2 or 3 Important The support conditions are e Horizontal roller support enter 1 e Vertical roller support enter 2 e Pinned support enter 3 36 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 5 3 Member Data Selecting the Member Data tab gives the following input grid MEMBERS Nodei Nodej E kN mm2 4 mm2 PS kN 1 oa 74 cn cn E co no 3 10 11 12 13 Joints Data Joint Results Member Results In this gird the user
26. on where the full structure is displayed 22 O Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 4 6 Control Board The Control Board is where most data input and preparation is carried out It can be minimized to allow easier viewing of the structure Minimise Control Board Member Data Force kN ForceY kN for members E Value 200 Animate 200 1 8 OK Area 1000 1191215 pra Forces Scale Node Data 93 1 kN m Node Load kN for nodes Edo Jes 10 E Show Reactions F Show Member Forces Show Deflected Shape Show Supports x m ym Show Loads From 0 0 Show Grid Generate Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 Show Member Nos Line of m nodes inclusive x 8 42 y 2 49 Pan Mode No Analysis TrussMaster www colincaprani com The Control Board is made up of three main areas highlighted above e User Input grid highlighted blue e Member data and node data highlighted green e Truss Display option highlighted red User Input Grid The grid allows the user edit the truss by entering type and locations of supports and loads It also allows the user to check the designation of physical properties and prestress forces After an analysis it gives the nodal and member results by clicking on the corresponding tabs denoted 23 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Member dat
27. rol Board x 0 91 y 1 97 PanMode Analysis Done TrussMaster www colincaprani com 4 Note that the grids can be copied at any stage for use in other software such as MS Excel The user selects the option select all and then copy from the right click menu Once the data is copied it can be pasted into excel in its matrix format for ease of formatting The user can return to the Truss Display Window gt Truss Display Ctrl D to observe that the truss has been solved as before 59 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Hand Solution to Problem el sc LAC i t E e LLO Zo C4 Bece EA ES A EN ee x E By Boco 0 ata p e o ct cs e Ktl Lo a l te 2 os SS cox gt T los Hs alza EEF OrS os cos x Af BLA Y Je DS os UU I Be ON O s i ft ees OR o od F 4 ee AA 3200 SO hr F Kd f bo 4 bes All X Nel tol 4 f4 9 h sy Sic SO le S Xx l naso Boat UTE S Rhys 2o Ea poe 16 Sales po Pan Pa Ry e Ino So Sole o UE nit tJ Us 8 tn 60 Colin Caprani 2010 TrussMaster v3 8 3 Appendix 3 References User Manual Version 1 0 1 Caprani C C 2010 Matrix Stiffness Method DT024 4 Course Notes available at www colincaprani com structural engineering courses structural analysis iv 61 Colin Caprani 2010
28. rties of member i e Young s Modulus and cross sectional area e Length of member e Prestressed force in member if any Stiffness Matrix e Gives the member s element stiffness matrix 32 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Results e The force in the member e Indicates whether member is in tension or compression e The elongation or stretch of the member e Gives the stress in the member 33 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Program options The options dialog window is accessed in the toolbar through Tools gt Options Options General Node Snap Mode Grid line style C Solid linetype Dashed linetype Maximum No of Nodes or Members Keep this value as close to your expected requirement as possible for an economic performance max 5000 File Handling No of files in most recently used list There are two tabs in the options window General and Node Snap Mode General e Select the type of line for the truss display i e solid or dashed lines e Select the amount of nodes and members to be used in the truss display e Sets the number of files in the recently used files list Node Snap Mode e Sets the grid spacing e Sets the click radius nodes within this distance of a click will be selected 34 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 5 Data Input and Editing 5 1 Introducti
29. s matrix by clicking on Show Global K 4 After the global stiffness matrix has been populated the structure restraints can be imposed by clicking Restrict DOFs 5 Only now is the Solve button enabled and the structure can be solved 29 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 4 8 Other Display Elements Status Bar The Status Bar is located at the bottom left of the program window m TrussMaster Truss Display Lo El jam de File Drawing Tools Window Help 8 x Dci 38 2 2 0 1 0 0 0 1 0 2 0 3 0 40 5 0 6 0 7 0 3 0 9 0 10 0 11 0 112 0 Member Data x m yim Force kN Force kN Support for members E Value 200 Animate 18 OK Area 1000 eg 110 1215 Deflection Scale a 100 mm mm x Forces Scale Node Data 93 1 kN m zi Node Load kN for nodes o io 13 x Show Reactions Show Member Forces a Show Deflected Shape f l Line ol m nodes inclusive 7 Show Supports zim v m M Show Loads From 0 Y Show Grid enerate V Show Node Nos gi iem oie d E a Joint Results Member Results To 110 0 V Show Member Nos e a e x 842 y 2 49 Pan Mode No Analysis e TrussMaster www colincaprani com 4 The Status Bar gives the user the following information e Panel 1 The current x and y coordinates of the mouse cursor e Panel 2 The current Screen Mode is d
30. t can be seen that in the designated input box the user has specified a line of eleven nodes and it will run on the x axis from 0 to 10 m and at 0 24 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 m on the y axis This process can be repeated by changing the coordinates of the node line on the x and y axes Repeated load designation This function allows loads to be specified to nodes in the truss faster than it would be to designate loads using the User Input grid ff DT024 4 q1 2008 trm Truss Display Of File Drawing Tools Window Help he Member Data for members E Value 200 Animate an 1 35 DK Area 1000 feg 110 1215 as 5 m Forces Scale Node Data DAN aA Node Load kN for nodes E y 10 fi 35 ox Show Reactions A A A Show Member Forces Show Deflected Shape Show Supports x m y m Show Loads From 0 Show Grid Generate Show Node Nos Te 10 0 Show Member Nos Line of mn nodes inclusive x 949 y 0 18 Pan Mode No Analysis TrussMaster www colincaprani com Above is a screenshot of a simple truss To apply a downwards load of 10 kN to nodes 6 through 10 the user can specify a load of 10 kN in the y node load box and specify the nodes by entering 6 10 in the node box 25 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 E DT024 4 q1 2008 trm Truss Display i Fie Dra
31. the on screen instructions to install the program Important During the installation you may be prompted that the versions of several files dll ocx most probably that are already installed on your machine are more recent than the versions that TrussMaster is trying to install You will be asked whether you want to overwrite the files with the older versions or keep your existing files You should keep your existing more recent files TrussMaster will be able to run with the newer versions of these files as they are backward compatible 11 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 3 About TrussMaster 3 1 Introduction TrussMaster broadly performs the following steps ds OY 01 A W N Data is entered into TrussMaster TrussMaster compiles this information and forms the basis of a 2 D truss The analysis commences The Truss Display displays the results in diagrammatic format The stiffness matrices then calculate the nodal deflections The final results are displayed in tabular format 12 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 32 TrussMaster Capabilities and Limitations Capabilities TrussMaster is able to Read data from pre existing TrussMaster files Simulate 2 dimensional trusses Model trusses up to a maximum number of 5000 nodes and members Apply loads in both the x and y directions Apply loads at inclined angles Take
32. to rete tt eese adatto d boe E reseau tue tud 39 6 27 IA I c 40 3 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 6 3 Picture Command EM MH 41 7 FAQS and TroubleShooting sccesesssocccssssececcssooccesssoocoessscocesssscceessooeessssooesee 42 Jah A 42 TAS AAA A A 43 S A TEL TO ETE 44 8 1 Appendix 1 Stiffness Method ecssccesssceecseseeceesneeeceeeeeeceeneeeesseeees 44 82 Appendix 2 Tuton e ar O AD rn A REEF EPOR nT JOYE 45 8 3 Appendix 3 ck SICTONCES ooi hacc tee du gay Nebel OR wee pene dle den adden 61 4 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 1 Introduction 1 1 The TrussMaster Program TrussMaster is a program for the analysis of two dimensional truss frameworks whilst exposing the underlying assembly and matrix operations This makes it suitable for supplementing the teaching of the matrix stiffness method The program aims to keep the user as close to the raw data and operations as possible This is in contrast to many commercial programs which can be much more black box in nature TrussMaster aims to bridge the gap between hand calculations and such commercial programs A webpage is available as a central point for problems solutions suggestions www colincaprani com programming trussmaster There is also a support email address trussmaster colincaprani com 5 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0
33. tructure Right clicking the mouse in the Truss Display will bring up the right click menu Pan Draw Nodes Draw Members Select Member Select Node Zoom Window Zoom Out F3 Zoom Extents F4 47 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Selecting the option Draw Nodes will turn on Draw Nodes Mode which lets the user place nodes at the grid intersections a TrussMaster Truss Display o Ll E File Drawing Tools Window Help 8 x Da EB 3w925 4 is L 40 5 20 0 9 0 MEMBERS Nodei Nodej JE kN mm2 A mm2 PS kN ee ode i ode i mm mm E Value EUM for members En 2 13 OK F 3 Area 26406 eg 110 1215 Deflection Scale a i 100 mm mm 5 Forces Scale E Node Data 59 6 kN m El 7 Node Load kN for nodes 8 OK 3 o Ho 35 ox M Show Reactions 10 M Show Member Forces 11 IEEE v Show Deflected Shape T Line of n nodes inclusive Z Show Supporte 13 xim y m Y Show Loads From 0 0 A IV Show Grid enerate V Show Node Nos Joints Data Member Data Joint Results Member Results To 10 0 v Show Member Nos x 2 42 y 3 09 Pan Mode No Analysis TrussMaster www colincaprani com Next Right click gt Draw Members will allow the user to join the nodes to form the basis of the structure 48 Colin Caprani 2010 TrussMaster v3 User Manual Versio
34. which TrussMaster yields can be read by any spreadsheet viewer such as MS Excel 39 Colin Caprani 2010 TrussMaster v3 6 2 Data Grid The Data Grid is the main source of output information in TrussMaster This grid User Manual Version 1 0 will output data which includes All these results are displayed in the grid format and can be extracted by copying Right click and choose Select All Next right click and select Copy from the menu Nodal deflections Member deflections Member forces and force direction Member stresses JOINTS Def x men Def y mm Forcex kN 25 5 0 0 0 0 0 50 0 0 0 0 75 5 0 0 25 ForceY kN Window box indicating nodal deflections MEMBERS Force kN Tort s N mm2 dL mm 50 0 T 166 666 25 106 07 C 250 002 5 303 35 36 C 83 335 1 768 Window box indicating members forces deflections and stresses These values can then be pasted into MS Excel for example 40 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 6 3 Picture Command At any point the current view in the Truss Display can be saved to a Bitmap file Selecting the Save Picture icon on the toolbar or Drawing gt Save Picture the user can save a Bitmap file of the truss display This can then be used in another application ISS8 TRM Truss Display Hi 3a Save Truss Display As O Examples My Recent Documents
35. wing Tools Window Help D u 3esp27 Vai 5 4 Member Data for members E Value 200 Animate pur 1 35 DK Area 1000 c 1101215 Koc y Forces Scale a 10 kN m E r Node Data Node Load kN for nodes r o y jio 6 10 Show Reactions Show Member Forces Show Deflected Shape Show Supports Show Loads Show Grid Show Node Nos Show Member Nos Line of n nodes inclusive zim y m From 0 o To fio o Generate lt I lt I lt I lt I lt I 04 x 12 57 y 0 34 Pan Mode No Analysis TrussMaster www colincaprani com The above two editing options are very useful in speeding up the construction of large trusses Truss Display options This area is concerned with options that alter the truss display The user can choose to e Animate the truss deflections e Alter the force and deflections scales e Turn on off the display for o Loads o Supports o Defection 26 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 o Grid o Member forces o Grid o Member number o Node number Important When editing the Truss Display it is necessary to refresh the grid pressing F5 to update the grid to show new supports and loads once defines in the input grid 27 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 4 7 Stiffness Equations Display To help the student gain a better u
36. y defined This is done by left clicking on the first node and then left clicking on the end node e Select Members Mode In this mode clicking on a member displays the Member Properties Dialog box e Select Nodes Mode In this mode clicking on a node displays the Node Properties Dialog box e Delete Mode Allows the user to clock on and delete either a member or node The Screen Modes are entered into through the mouse right click menu accessible by right clicking in the truss display area The Screen Modes remain in place until an alternative is selected The current mode is indicated in the program Status Panel 2 Colin Caprani 2010 TrussMaster v3 User Manual Version 1 0 Right Click Menu The mouse right click menu is found by right clicking in the truss display area Pan Draw Nodes Draw Members Select Member Select Node Delete Zoom Window Zoom Out F3 ZoomExtents F4 The commands accessible through this menu are e Pan Turns on Pan Mode e Draw nodes Turns on Draw Nodes Mode e Draw members Turns on Draw Members Mode e Select members Turns on Select Members Mode e Select nodes Turns on Select Nodes Mode e Delete Turns on Delete Mode e Zoom window Allows the user to left click and drag a window around an area to zoom in on e Zoom out Zooms view out of grid and can be repeated by the user to get to a desired view e Zoom extents Returns the view of the grid to its default positi
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