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eta/VPG version 3.3 User Manual

1. Select Reference Node After the user has selected one node on the screen the dummy is moved to the new position Drag The user is allowed to drag the dummy to the new position after selecting the drag direction The drag direction is listed for selection under the global coordinate system The coordinate value for H point of the dummy can be real time displayed in the edit box while the user is dragging the dummy Reset H point Click this button and the dummy will be moved to the initial position before accessing this function Apply Moves the dummy Close Closes the Dummy Position Task Panel Tab2 Rotate This tab facilitates the user to position each assembly of the dummy Inventium PreSys 2012 R3 11 P Chapter 3 Virtual Proving Ground Position Dummy Current ETADEFORMABLE 50 B N a Translate Rotate Dummy Assembly 1 TORSO 2 YOKE_RIGHT 3 UPPER_ARM_RIGHT 4 LOWER_ARM_RIGHT 5 HAND_RIGHT B YOKE LEFT 7 UPPER_ARM_ LEFT mM Assembly Angles Phi Theta Psi Maximum 0 0 0 0 0 0 Curent loo 00 Foo 4 Minimum 0 0 0 0 0 0 Mouse Dra Lett Middle Right Reset All Angles Apply Close Dummy Assembly This lists each of the dummy assembly for rotation which includes Torso hand lower arm upper arm yoke upper leg lower leg and foot for the user to select as needed After the user has selected one of the dummy assemblies the prog
2. Increment Reverse Direction Reverse Direction Select CS Global select CS Global Re 10 gle 1 Distance 1 0 The Position Window has two tabs facilitating the user to translate and rotate the device respectively Translate After the user has defined the direction and distance for movement click the Apply button to translate the device e lf the user selects to translate Along X axis Y axis Z axis the user is allowed to click the Select CS Global button to select the coordinate system to translate and enter the distance in the Distance field It is default as the global e f the user selects to translate Along N1 gt N2 the user needs to select two nodes and the program will automatically translate the test device according to the vector defined by the two nodes e Reverse Direction The test device is moved in the opposite direction of the defined direction Rotate After the user has defined the rotation axis and rotation degrees click the Apply button to 113 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground rotate the device e f the user selects to rotate Round X axis Y axis Z axis the user is allowed to click the Select CS Global button to select the coordinate system it is default as the global e f the user selects to rotate Round N1 gt N2 the user needs to select two nodes The vector defined by the two nodes is the rotation axis and the program will rotate the test d
3. Inventium PreSys 2012 R3 a e P Chapter 2 PreSys Instructions Figure 2 Spreadis setto 19 Figure 3 Spread is setto 20 4 Neighbor Selects the elements neighboring to the selected element When the user selects some elements and then clicks this button the elements neighboring to the selected element will be selected 5 By Material It enables the user to select the element by selecting the material When this option is selected it will pop up the Select Material window as illustrated in the following figure The user is allowed to select the material type on this window and then click the Close button and then all elements endowed with this material will be selected By Cursor IP Trace Front Col Type ALE CO W gymal ALE so H 9 MA _ iii By Other Methods All Displayed New By selection Options Exclude Reject Reset Close 6 Filters When selected the user can only select the elements specified by the filters When this option is toggled on click the Element Type button to display all element types in current models The user is allowed to toggle on one of or some of the element types only the togged element types can be selected 39 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions selection Options Filters Element Type E Exclude All BEAM DISCRETE SHELL SOUD JOINT 2 7 4 Select Line Windows The Select Line window is illustrated in the foll
4. Pause between Jobs Ro Sec INCSolver DALSDYNAMste_elientexe PP Not use MPP 7 a S SD ee OL EERE L a Master_Headform_A_ 2 E dir_wwwiPedestriannewiPedes 0l LS No 1024 View view View r Master_Headform_A 5 Evdir wwwiPedestriannewiPedestr LS DYNA 5 No 1024 Tan Master_Headform_A_ E dir_wwwiPedestriannew Pedestr LS DYNA S ey No 10274 view I Master_Headform_C_4 E dir_wwwiPedestriannewiPedestr S DYNA Sa No 1024 view Master_Headform_C_ 3 E dir_wwwiPedestriannewiPedestr _S DYNA No 1024 jew Master_Headform_C_ 6 E dir_wwwiPedestriannewiPedestr LS DYNA S at No 1024 1 Master_Headform_C_1_ Edir_wawPedestriannew Pedestr _S DYNA 8 gt No 1024 i Master_Headform_C_7_ E dir_www PedestriannewiPedestr S DYNA S isd No 1024 1 IC Master_Headform_A_ 3 E dir_wwwiPedestriannewiPedestr LS DYNA 5 No I m Master_Headform_A_1_ E dir_wwwiPedestriannewiPedestr LS DYNA No 1024 l 4 6 Groupi Group2 Groups Command j E dir_www PECASB 1 PEDEST 3 Row1 1 4_ 2_ 1 1 MASTER 1 DYN memory 266435456 ncpu 4 Postprocess The calculation for HIC or Score is avery tedio Foe ees v us work in the pedestrian protection analysis Therefore the Pedestrian Protection function is developed in the Postprocess module to automatically calculate the running results of the pedestrian protection and the user can directly view the scores of each impact point After the user opens o
5. Inventium PreSys 2012 R3 e P Chapter 2 PreSys Instructions 2 7 Entity Selections In certain commands such as COPY DELETE etc PreSys prompts the user to select elements nodes lines surfaces etc In addition different entities correspond to different select boxes In this section we will first introduce the commonly used selection modes and then various entity selection windows in detail 2 1 Commonly Used Selection Modes There are six commonly used entities to be operated during the operation process of PreSys including the node element line surface coordinate point and coordinate system These six entities correspond to different select boxes and there are multiple selection modes for each select box We will introduce the commonly used selection modes illustrated in the following figure in this section By Cursor W Trace E By Attached Z By Chained By Other Methods al Displayed By selection Options E Exclude 1 By Cursor Pick This is the default selection option The mouse may be used to make a direct selection from the Display Area This method can activate the Trace and By Attached options lt Trace When this option is toggled on move the mouse to highlight the entities captured by the cursor This option can be activated only in Pick lt By Attached When this option is toggled on the entities connected to the selected entities will be automatically selected This
6. Velocity C Displacement O Relative Displacement Curve for Motion 0 select Curve Termination Time Step DTM Module Joo Translati VID Transli 6 Rotation d ViD Rotatio Acceleration Velocity vs Disp Termination Time Factor End Time 1 0000 0 5000 steps in d3plot steps in time history i s 200 DOF The user can select the motion mode as translating or rotating along X Y and Z as needed VAD Select the motion conditions such as Velocity Acceleration and Displacement Curve for Motion Input the motion curve ID or edit the motion curve End Time Vibration end time This parameter can be modified as required Factor This factor is used for the user to scale the time length of the simulation Termination Time This value equals to the product of Factor and End Time Steps in d3plot The numbers of D3plot outputted during simulation Steps in time history The numbers of node or element information outputted during simulation Tab3 Card 167 Inventium PreSys 2012 R3 P Chapter 4 DTM Module Shock Test T T ie Punch Parameters Card Job Main Control Cards Control Contact W Control Shell W Control Hourglass W Control Time Time History Files D3PLOT NODOUT E ELOUT E GLSTAT E MATSUM E RCFORC E SLEOUT History Nodes Elements Select Node s 0 E Sel
7. e Road Model e Tire Model e Suspension Model Not supported in 2012R2 Version 2 VPG Safety It provides the standard procedure and tools for the automobile crash simulation analysis The safety module supports the most important automobile crash regulation in the world and various simulation models required in the regulation including the following aspects e USA FMVSS e Europe ECE e Japan NCAP e Euro NCAP e Dummies e Barriers e pendulums e Seatbelt 3 1 VPG Structure The VPG Structure module is a dynamic durability analysis environment which provides abundant and standard model library required in the durability analysis of the system level including the road model tire model and suspension model It is used in automobile body fatigue and life analysis NVH analysis and nonlinear dynamic analysis 3 1 1 Road 46 As different roads are needed in the vehicle performance simulation this module provides abundant automobile proving ground virtual roads which facilitates the user to perform the durability and safety analyses of the automobile Meanwhile it can be also used for nonlinear kinematical and dynamic calculations and the studies for comfort high speed performance and handing stability of the full vehicle as well The following three methods can be for creating or importing the road Inventium PreSys 2012 R3 e728 P Chapter 3 Virtual Proving Ground Adopt the road library that comes with PreSys 2
8. Cancels the coordinate point in the last selection Please Note This operation can be performed by right clicking the mouse button 6 Reset Unselects all selected coordinate points 2 7 7 Select LCS There are two windows for the Select LCS window as illustrated in the following figure including the commonly used selection modes such as Pick Box and so on Please refer to Section 2 7 1 for detailed description about these selection modes Only two special selection modes are introduced in this section 43 Inventium PreSys 2012 R3 44 PreSys Instructions Delete LES 0 By Cursor Trace By List ID Name 1 cs 1 3 By List HAND L AT LW Name LWARM L AT H Cs LWARM L AT U 1001 HAND LATLW 2 LWARMLATH LWARM L AT U UPARM L AT L Bioniaed 1005 UPARM L ATS Tire E OUA ITI ATII Global CS By Cursor Trace By Other Methods Selection Options By Other Methods E Exclude ect Temp LCS Cancel By List The list contains all local coordinate systems in the model Click the coordinate system in the list directly for selection By List supports the multiple choice by the user with the Ctrl or Shift key is supported through By List Temp LCS t allows the user to create the new temporary coordinate system After creating the previously created coordinate system will be deleted The temporary coordinate system is only used to facilitate the user to move the entities such
9. The Impact Node is defaulted by the program based on the initial state of model The program will automatically pick the first point that is contacted with the ground when the model is dropping according to the initial state of the model CG to ND1 The program will calculate the center of gravity location for the model and define the direction from the center of gravity to the selected node ND1 to ND2 It enables the user to pick two nodes and define the direction from node 1 to node 2 Select Node This option will be activated only when CG to ND1 or ND1 to ND2 is selected for drop direction The user can select the node by clicking or entering the node ID Update Model Orientation After the user has defined the drop direction a white arrow line in the model will point to the selected direction Clicking this button will update the model orientation according to the selected direction that is the initial dropping state for the model Rotate Model X Rotate the model to an angle about X axis Y Rotate the model to an angle about Y axis Z Rotate the model to an angle about Z axis 180 180 Define the rotation angle for the model by dragging the slider or entering an angle value in the edit box Rotate model Click this button and the model will be rotated according to the defined coordinate axis and angle Always Calculate CG Toggle on this option the CG position of the model can be real time displayed as long as model dire
10. Time History Files D3PLOT E NODOUT F ELOUT E GLSTAT E MATSUM E RCFORC F SLEQUT History NWodes Elements Select Node s 0 Select Element s 0 E L Main Control Cards Control Contact Define the contact control 163 Inventium PreSys 2012 R3 P Chapter 4 DTM Module 164 Control Shell Define the control for the shell element Control Hourglass Add the control for hourglass Control Time step Set the time step as 1 microsecond Time History Files D3PLOT Output the binary file NODOUT Output the node data including the node deformation velocity and acceleration ELOUT Output the element data including the element stress and strain GLSTAT Total energy message of the model such as kinetic energy potential energy hourglasses energy and discrete energy M ATSUM Material absorption capability It outputs of the information related to material such as the kinetic energy and internal energy RCFORC Output the resultant interfacial force SELOUT Sliding surface energy It outputs the contact energy for master and slave surfaces and friction energy Nodes Select the nodes needed for output After defining the node the displacement velocity acceleration rotation displacement rotation velocity and rotation acceleration of these nodes will be achieved from the post processing Elements Select the elements needed for the output Different forms of force can be got for element
11. Wheel Zoom Speed Moderate PS Reference Plane Si Shortcut Key J Motion Mode H P Import Export H I GeomModeling H Preprocess 4 Cancel se SSS EOEOEOEOEOEOEOEEEOEeeeeEeEyEeE E The right mouse button is also used for selecting definition cards locating the cursor in definition cards creating drag windows locating points nodes elements etc Entities from the Model Explorer may be selected using the right mouse button providing access to functions such as create delete edit for each top level entity on the model tree Inventium PreSys 2012 R3 e P Chapter 2 PreSys Instructions 2 6 Keyboard Entry 24 To increase speed and efficiency all PreSys functions can also be accessed by keyboard entry Entering a one or two letter combination followed by the return key activates each command of the menu that the user presently has on the screen For main menus the letter combination is the first two letters of a one word command or the first letter of each of the first two words of a two or more word command As the user types the keys the matching command will be highlighted For example the keystroke entry for the command ELEMENT OPTIONS SURFACE MESH in the above menu would be s m followed by the RETURN key For the ELEMENT OPTIONS MODIFY command the keystroke entry would be m o followed by the RETURN key For control keys the user need only type the first letter to access the function
12. gt If the explosive shape is Cube Length Width and Height should be defined in the box gt f the explosive shape is Cylinder The Length and Radius of the bottom should be defined in the box gt Material Set the type of the explosive zone The program can automatically generate the material and state equations according to the selected type and the type includes Soil Water and Air Transition Region The transition region can be used to control the mesh density The user can set multiple transition regions for the mesh and different mesh gradient ratios can be set for each transition region Please Note The transition region can only control the mesh density of the explosive zone and the dimension of the explosive source is determined by the Element Size option There is one expand button on the right side of each zone which can fold the information of the current zone By default the Transition Region is folded The user can click the expand button for it to unfold the information of transition region as illustrated in the following figure 173 Inventium PreSys 2012 R3 174 P Chapter 5 W Transition Region show Transition Region Profile No of Regions 3 Absolute Length Width TR1 200 0 200 0 TR2 400 0 400 0 TR3 600 0 600 0 Element Size 20 0 O Relative Height 233 333 466 667 700 0 ALE FSI A Rati 2 0 3 0 40 No of Regions Select the number of the transit
13. pP Chapter 2 PreSys Instructions 2 Front This option can be activated only in Pick When activated this forces the selection to the node which is positioned closest to the observer As is illustrated in the following two figures the Front option is toggled on in the left figure only the outside node of the cube is selected Otherwise one of the nodes inside the cube will be selected as illustrated in the right figure Front is toggled on Front is toggled off 3 Spread This option can be activated only in Pick Its method of application is illustrated as follows m When this option is toggled on if the Spread entered is 0 all nodes on the same shell element with the picked node will be selected as illustrated in the following figure At most nine nodes can be selected simultaneously under such circumstances 32 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions m f the entered Spread is X that is more than 0 the nodes on the element that satisfies the following three conditions will be selected a The normal angle with the element where the picked nodes are located is less than X b The element thatis connected with the element where the picked nodes are located c The element that is currently displayed Set the Spread to 2 and all nodes on the bottom surface of the cube connected with the element where the node is located will be selected Select Node 76 Ea By Cursor i S T
14. El Dummy 1 Torso A a E E E rrr err rer H Lower Arm Right Hand Right o E E Yoke Lefi l E Upper Arm Lefi F F Lower Arm Left jo a Hand Left jo El 5 Upper Leg Right fo a Lower Leg Right io F Upper Leg Lett jo E Ey Lower Leg Lett Oj E Foot Left hol E Toggling on the display box on the right side of Upper Arm Right subdirectory the defined Upper Arm Right will be highlighted on the screen as illustrated in the following figure 83 Inventium PreSys 2012 R3 84 p Chapter 3 Virtual Proving Ground Please Note The user only needs to create the dummy directory tree once and there is no need for the user to create all directories the user only needs to create specific assembly to rotate as required The dummy overall at different levels is illustrated in the following figure Torso Upper Leg Right Upper leg Left In the above directory the red box indicates this assembly is not necessary for the dummy tree and the user can create the next level assembly directly While the black box indicates the user must create the assembly before creating the assembly in the next level 3 2 1 5Modify Dummy This function is used to modify the stop angles and the joint stiffness of the assemblies when the user read in dummy models The user can access the Modify Dummy task panel as illustrated in the following figure with Application gt Safety gt D
15. Select 2 Seatbelt Element Select the two seatbelt elements that have the same node with the slipring node as illustrated in the following figure Slipring node Seatbelt element Element Element 3 Seatbelt element 3 2 3 2Refit Seatbelt When the user has created the seatbelt there always occurs to adjust the dummy position Then there is no need for the user to create the seatbelt again and it works by refit the seatbelt through this function This function can be accessed through Application gt Safety gt Seatbelt gt Refit Seatbelt Refit Seatbelt Apply Close The task panel for this function is quite simple The user only needs to select the seatbelt to refit in the display area and then click the Apply button to finish the operation The following two figures illustrate the effects of the seatbelt refitting In the left figure the seatbelt penetrates the dummy chest as the user has re positioned the dummy In the right figure the seatbelt ribbon position has been fixed after refitting the seatbelt with this function the seatbelt has been assembled on the proper location 100 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground We ps i a H aa ac at 3 2 3 3Delete Seatbelt This function is used to delete the seatbelt created by the user Delete Seatbelt Select Seatbelt S All Seatbelt Incldue Related Slipring Task Panel Options Select Seatbelt Selects the seatbelt to d
16. User defined method can be used to import the road if the users have their own road files 3 Parametric method can be used for creating the road Please Note The road model imported by the user defined method will be identified as a road component therefore it can be repositioned or deleted directly through the Transform Component or Delete Component function provided by the structure module The road module can be accessed through the dropdown menu of Application gt Structure as illustrated in the following figure Application Tools Window Help FSI DTM gt Safety Structure Tire Suspension Transform Component Delete Component 3 1 1 1Import Road This function is used to import the models in the road library of ETA or users own road files Select User Define in Type to import the users own road models directly The operational processes for importing the road are as follows 1 Select Road Type Click Application gt Structure gt Road gt Import Road in turn to display the task panel illustrated in the following figure After the user has selected one of the road types the schematic diagram for this road model will be displayed below it Import Road Type Alternate Surface Mode Fixed A Moving 0 There are twelve standard and typical road models in road library of ETA which are also the standard proving grounds for full vehicle testing The twelve road types are listed i
17. protection regulations and the user can modify them as needed lf the user places the mouse cursor on one of the parameters for a moment the schematic diagram corresponding to this parameter will be displayed The following table lists the impact parameters to be set and the schematic diagrams for these parameters respectively according to different test types 122 Inventium PreSys 2012 R3 Chapter 3 Virtual Proving Ground Test Parameter to NET be defined Schematic Diagram Child Head Angle Adult Head Angle Headform Test C A Head Velocity C A Head Clearance Clearance 123 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Legform Velocity Clearance Legform Legform Clearance Test Legform Height 124 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Clearance Upper Legform Clearance 2 Impact Points Operations The impact points define the impact positions between the impactor and the automobile body Impact Points All Points Selected Point Operation E On Off Points Create Translate Delete As is illustrated above the operations for the impact point includes the following processes gt Select Impact Point All Points are selected for analysis by default The user can select only some of the points for calculation as needed gt On Off Points It controls whether the impact points are displayed or not gt Cre
18. 14 55 Inventium Libraries lt Documents a Music Pictures E Videos jE Computer Local Disk C a Local Disk D cy Local Disk E Dba an a iv 4 File name Model File mdl Open File Window gt Unit Setting The user s database will use a solver template specified in the Tools menu By default the solver template is set to LS DYNA Any changes in the template will be saved in the configuration file for subsequent new databases See Section 10 6 for details on how to make this type of change When importing a MCAE solver file like a NASTRAN input or LS DYNA input file the user will also be prompted to select the Unit System desired Inventium PreSys 2012 R3 P Chapter 2 p Unit Setting Set MM 5 TONNE O MM MS G O MM MS KG M 5 KG G FT S5 SLUG A IN 5 LBF S42 1N O User Defined Current Length Current Angle Current Time Current Temperature Current Mass Current Mole Unit System The selected unit system will be stored in the database as the default value setting The user will now be ready to start the session PreSys Instructions ELE eB ele Inventium PreSys 2012 R3 e P Chapter 2 PreSys Instructions 2 2 ModelTree Model Tree is the characteristic of PreSys which provides great convenience for the user to operate PreSys 1 Multiple subdirectories are contained under the model tree The function menu will pop up by right clicking each
19. C_ 3_1 Pedestrain ImpactiPedestrian Headform Row1 C_ 4_1 Pedestrain ImpactiPedestrian Headform Row1 C_0_1 Pedestrain ImpactiPedestrian Headform Row1 C_1_1 MPadestrain ImnartiPedectrian HearfarmiRawiit 2 4 Master Heardfarm 9 1 dwn 4 Group1 Group2 1_ LS DYNA S E LS DYNA 5 LS DYNA S v No No No No No No No Na 500 500 500 500 500 500 500 ann View View E vew r vew r vew r vew r View E vew r rc b View LS DYNA S v View View LSDYNA S gt LSDYNA S gt LSDYNA S gt i S NYNA S View View View iew View Command INPEEE61 1 PEDEST 1 Row2 C_ 6_2 MASTER 1 DYN memory 131072000 D in the status bar marked with 5 6 Ifthe calculation for an impact point is abn After the calculation is finished the calculation state for each impact point will be displayed ormal the user can click this job and then click the result summary list marked with 6 to view the error information given by the solver 7 the calculation result After the user selects one job click the icon marked with 7 to start the Postprocess and view JS Job Submitter 2012 R1 Solver R LS DYNA 5 DILSDYNANS971_s_R6 0 0_winx64_pexe isi s s C NA Control Parameter LS DYNA D FO Memory fioz4 MB mM Auto UTILITYBATCH ff CPUNumbertnepu 4 MSTEP o
20. Fender Legform Test Head Lamp Front Grill etc Upper Legform Test Bumper Bonnet and Fender Head Lamp Front Grill etc gt Toggle on one of the test types and the buttons for the automobile parts to be specified will be activated Click this button to select the corresponding part on the screen 120 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground gt Click the Apply button to create the impact zone and impact point The following figure illustrates the created impact zone and impact points based on the Euro NCAP regulations including O Impact Point for Adult Headform Impact Point for Child G Impact Point for Lower Legform 0 Impact Point for Upper Legform Please Note It enables the user to create multiple impact zones simultaneously by toggling on multiple test types 3 If the tested model is V shaped front end the V shaped Front End option needs to be toggled on 4 In calculating the Wrap Around Distance WAD it needs to measure from the ground where the model car is located Therefore the user needs to enter the ground information in the Ground Z Value option or replace it with the Z coordinate of the lowest point of the tire 5 The Plotel and Line options are the display modes for Wrap Around Distance WAD e Plotel It represents the Wrap Around Distance WAD with the Plotel element and is the display mode by default The Plotel element can be exported in the DYNA file whi
21. H Function Group Element FSI Help Coordinate System Line Point Material Measurement Wesher Model Check Biada PreSys Instructions Shortcut keys Command Command Create Force Create Moment Create Pressure Create SPC Create Initial Velocity Delete B C S Please press new shortcut Attach Remove 2 Select the command needs to create the shortcut key from Function Group and Command menu 3 Select the shortcut key from the Shortcut Keys and then click the Attach button in the right and the shortcut key for this function will be defined successfully 2 4 6 Display Area 20 The PreSys DISPLAY AREA can be configured to open multiple models simultaneously Up to 4 views may be opened at one time To open multiple models the user selects the Window menu from the Drop Down menus and the View Layout option The desired window layout can be selects As shown in the following figures selecting the mode 1X 2 will create a side by side model layout for 2 models Note that the active model will be indicated by a red frame around the Display Window Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions Untitled 4 Untitled 5 Untitled 6 Untitled 7 Graph 1 thickness d LI Close Model Split Horizontally F I Split Vertically Move Up Move Down Move Lett Howe Aight Display Area for Splitting Untitled
22. J Row2 Ji Row3 J Row4 Ji Row5 d Row6 d Row7 J Rows J Rows dJ Rowl0 dJ Rowl1 adult_headtorm k child_headform k ENI Impact Point csv impact_zone k Master_Headform_C_ 3_l dyn Headform File Measure Node Information File Pedestrain vehicle k Model Car File Exported Headform Test Folder and its Subfolder t Pedestrian Headform Pedestrian Legform wi i L Master_Legform_L3B dyn Gij Impact Point csv impact _zone k lower_legform k Pedestrain vehicle k Exported Legform Test Folder and its Subfolder 132 Inventium PreSys 2012 R3 133 P Chapter 3 Virtual Proving Ground me Master_UpperLegform_U1A dyn upper_legform k di Pedestrian Headform di Pedestrian Legform di Pedestrian Upper Legf orm fii Impact Point csw _ impact_zone k _ Pedestrain vehicle k Exported Upper Legform Test Folder and its Subfolder Submit the Calculation Dozens or hundreds of impact points need to be tested for the Pedestrian Protection function and the calculation submitting with the single file will undoubtedly waste much time and energy Therefore ETAhas specially researched and developed the function for supporting the users submitting in batch in another product Job Submitter The usage for this function is illustrated as JS 1 Click the shortcut icon L ta for Job Submitter on the desktop to start Job Submitter 2 Set the DYNA solver path in the path
23. LELLLELLLLLLLLLLELLLLLLLELLLLLELLLLLLLLLLLLLLLLLLLLELLLI Task Panel Options Define Material Allows the user to re assign a new material to the part Click this button to enter the interface of Select Material In this specified material interface the user is allowed to Select an existing material or Create a new material by clicking By gt By New then the Select Part interface is popped Inventium PreSys 2012 R3 Chapter 5 Select Material 0 By Cursor W Trace By List ID Name 1 mo000001 2 mooo0002 By Other Methods OK In this Select Part interface the user is allowed to Select one or more parts in the part list or on displayed area Click the middle mouse button and the selected part will be endowed with the new material If the selected part has been specified with a material type the program will remind the user whether to cover the existing material Click YES to cover and click NO to reserve lf all the parts have been assigned the materials click the Cancel button in Specified material interface to return to Define ALE FSI Define task 176 W Front ALE FSI Wh Cancel Inventium PreSys 2012 R3 P Chapter 5 ALE FSI select Part 0 By Cursor Trace By List Name Filter ID Name Color 1 NECKRUB M E 2 NECKSUP O a IAMAI wm TI 2 a By Other Methods Displayed Selection Options C Exclude Reject Reset OK Cancel Define Property Allows the user to re assign a
24. Parameters Card Job Main Control Cards i Control Contact Control Shell Control Hourglass W Control Time Time History Files D3PLOT E NODOUT E ELOUT E GLSTAT E MATSUM E RCFORC SLEOUT History Nodes Elements Select Node s 0 Select Element s 0 ae Close Main Control Cards Control Contact Define the contact control Control Shell Define the control for the shell element Control Hourglass Add the control for hourglass Control Timestep Set the time step as 1 microsecond Time History Files D3PLOT Output the binary file NODOUT Output the node data including the node deformation velocity and acceleration ELOUT Output the element data including the element stress and strain GLSTAT Total energy message of the model such as kinetic energy potential energy hourglasses energy and discrete energy M ATSUM Material absorption capability It outputs of the information related to material such as the kinetic energy and internal energy RCFORC Output the resultant interfacial force SELOUT Sliding surface energy It outputs the contact energy for master and slave surfaces and friction energy Nodes Select the nodes needed for output After defining the node the displacement velocity acceleration rotation displacement rotation velocity and rotation acceleration of these nodes will be achieved from the post processing Elements Select the element
25. Pedestrian Protection Project Folder E dirwww pedestranprotect A Start all forms Analysis Mame Score Headform Score 15 379 Lower Legform Score 4 FO pper Legform Score 5 000 Final Score 25 076 Star of Vehicle Certainly the user can also skip the Headform Legform and Upper Legform task panels and enter the Project Folder that includes all test types directly in this task panel The program will automatically analyze all running results and calculate the final scores of the model car and enter the results for the Headform Legform and Upper Legform in the corresponding task panel 138 Inventium PreSys 2012 R3 e P Chapter 3 Virtual Proving Ground 3 2 6 Airbag The VPG Airbag module of Inventium provides world leading intellectualized airbag modeling solutions which can reduce airbag modeling time improve the model quality reduce the analysis cost and maximize the research and development efficiency of the enterprise 3 2 6 1 Geometry Fold The Geometry Fold function can be used to fold the airbag into desired shape and place it in the cavity such as the steering wheel by moving the meshes according to the actual fold steps which is convenient and easy to operate The user is allowed to access this function from the Application gt Safety gt Airbag gt Geometry Fold dropdown menu File Edit View Preprocess Application Tools Window Help DABBE m bt ABS oF Dummy gt Intitled 1 structure seat Cushion Def
26. TA An lt A a 1 e L lt ILSIL q lt E lt lt I Click the corresponding color display box of the part or coordinate the color selection card will pop up Select any color and the corresponding entity will display as the selected color 11 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions S Model Info E Part 121 GBS dummy_df50 k 118 El Color 3 119 ShoeTop L 120 Shoe Top R i 121 PART_JOINT Coordinate System 51 ElementiNode 10784 BEAM 26 a DISCRETE 10 z SHELL 5944 5 The model tree can automatically provide the detailed information for one of the subdirectories If the user puts the mouse under one of the subdirectories the detailed information for this subdirectory will be popped up The following figure illustrates the related information when the mouse is put under Part Material and Property directory respectively Model Info Eb Part 121 EE dummy_df50 k 118 1 NECKRUB m Material 112 1 mooo0001 O BIRIRIRIRIRIRKE E A a amp e L cae 3 ee 5 ore 6 aay T Part Information Material Information Et Property 114 4 50000001 O Pa 2 i Fer rr a A F lt a 1 1 Property Information 6 The model tree also provides non graphical interface operations facilitating the user to create keywords for Contact Hourglass and Control Card and so on PreSys provides multiple solvers
27. common in areas of mechanical and structural engineering The name PreSys is derived from the Greek word for development presis and the word precise These are both words that resonate with product development engineers and are daily concerns for users of finite element software products The Virtual Proving Ground VPG technology is one finite element tool especially customized and developed for users of auto industry which is mainly used in automobile simulation analysis at system level including the fatigue life analysis for full vehicles nonlinear dynamic analysis for full vehicles NVH analysis and crash safety and occupant protection and so on The Drop Test Module DTM is used to research the product performance in the drop test These tests can be used to evaluate the product design and packing material of transportation products which will facilitate engineers to reduce the damage to product by using energy absorption materials and improve the product strength to endure the crash The ALE FSI module facilitates the user to automatically create fluid meshes of various sizes It also provides all modeling tools required in fluid structure interaction simulation Simulation results include the deformation stress accelerated speed and history In the drop test these Inventium PreSys 2012 R3 P Chapter 1 Introduction results can be achieved by measuring with the accelerometer and stress measuring tool and high
28. energy hourglasses energy and discrete energy MATSUM Material absorption capability It outputs of the information related to material such as the kinetic energy and internal energy RCFORC Output the resultant interfacial force SELOUT Sliding surface energy It outputs the contact energy for master and slave surfaces and friction energy 156 Inventium PreSys 2012 R3 P Chapter 4 DTM Module Select Nodes Select the nodes needed for output After defining the node the displacement velocity acceleration rotation displacement rotation velocity and rotation acceleration of these nodes will be achieved from the post processing Select Elements Select the elements needed for the output Different forms of force can be used for element types Tab4 Job T as Parameters Card Job Solver B Output File B Batch Job Drop Height mm Rotate About X Counter Clockwise Rotate About Y Counter Clockwise From 0 000000 To 0 000000 m m m Inc 0 000000 Output Series Files Single Job Memory 512 000000 MB NCPU 2 m Run it Now Close Solver Enter the path for the solver Output File Set the path for the output files Batch Job This function allows the user to output a series files by setting different heights and rotation angles Drop Height When this option is selected the files for models from different heights can be batch output Rotate About
29. in DYNA format Please Note 1 After the user has selected the impactor type click the Apply button at the bottom of the task panel to import the impactor in the current model 2 lf the user needs to use the impactor model of other company it should make sure that the central shaft or central point of the impactor is positioned as the following table before the model is imported Model Positioning 127 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground The central symmetry ari coincides with the Z axis in the global coordinate system Headform Child and Adult The central symmetry axis comecides with the 4 axis in the global coordinate system Legform P comm The distance between the lowest point and the XOY plane is 38mm 128 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Upper Legform gt On Off It controls whether the impactor is displayed or not Click the On Off button to display the task window as illustrated in the following figure On Off impactor By Cursor Only Select On Other Methods Please refer to Section 2 15 1 for detailed description about these selection modes in this window gt Transform It can be used to adjust the location or angle of the impactor Click the Transform button to display the task window as illustrated in the following figure 129 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Transform Imp
30. input box marked with 2 in the following figure 3 Click the folder submitting in batch button marked with 3 and select the main folder of the pedestrian protection test that is exported in Postprocess by the user The program will automatically search in the home folder and add the Dyna file in each subdirectory that corresponds to the impact point to the submit jobs list Please Note To execute this function it needs to match each subfolder wth the file name for the pedestrian protection exported in Postprocess As a general rule the user is not recommended to modify each file name or folder name 4 Click the Submit Jobs button marked with 4 to submit the jobs to the solver for calculation Inventium PreSys 2012 R3 P JS Job Submitter 2012 R1 Chapter 3 Solver LS DYNA S LS DYNA D UTILITYBATCH D LSDYNA Is971_s_R6 0 0_winx64_p exe i Virtual Proving Ground LS DYNA Control Parameter Memory 500 CPU Number ncpu 1 Pause between Jobs 2 MB M Auto Sec Aoa L IE Master_Headform_C_0_0 dyn Master_Headform_C_ 1_1 dyn Master_Headform_C_ 2_1 dyn Master_Headform_C_ 3_1 dyn Master_Headform_C_ 4_1 dyn Master_Headform_C_0_1 dyn Master_Headform_C_1_1 dyn Pedestrain ImpactiPedestrian Headform Row0 C_0_0 oo l Pedestrain ImpactiPedestrian Headform Row1 C_ 1_1 De ee ee ee ee Pedestrain ImpactiPedestrian Headform Row1 C_ 2_1 Pedestrain ImpactiPedestrian Headform Row1
31. is more than the given maximum or less than the given minimum the retractor will be activated Time Delay Define the delay time after the retractor is activated Pull Length Define the pull length before the retractor is locked Fed Length It is defined as the initial length which is at least 3 times of the minimum length for the seatbelt material Select Curve for Loading The force pull loading curve after the user has defined the retractor locking Select Curve for Unloading The force pull unloading curve after the user has defined the retractor locking Tab 3 Slipring This tab facilitates the user to define the seatbelt slipring on the automotive B pillar or the waist Seatbelt _Bett_ Retractor Stiprino Parameter Dynamic Fric Coeff Static Fric Coeff 0 0 o Lock Time 0 0 opw Close Dyna Fric Coeff Define the dynamic friction coefficient of the slipring Static Fric Coeff Define the dynamic friction coefficient of the slipring Lock Time Define the lock time which means the seatbelt cannot slide from one side to the 99 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground other side of the slipring after this lock time Select Node Select the slipring node The slipring node refers to beam node connected with the seatbelt and this node has the same coordinate with the seatbelt node as illustrated in the following figure
32. it 2 Impact Conditions Setting Click the Apply button on the Regulation tab and the test conditions tabs associated with this regulation will be displayed The barrier setting for 214 Side Impact is illustrated in the following Inventium PreSys 2012 R3 104 P Chapter 3 Virtual Proving Ground Crash Regulation Regulation Barrier Du mmy Cards e Parameter Barrier Velocity 149 75 8 Vehide MDB Clearance 20 0 Wheelbase of Vehicle 2000 0 m m m struck Side Left Right Vehicle Type Passenger Car Truck Bus Barrier Source VPG External File ie Gece The program listed the test conditions specified in USA FMVSS For example Barrier Velocity Crash velocity between MDB and testing vehicle Ve hicle MDB Clearance Distance between MDB and the testing vehicle in the original state Struck Side The relative position of the MDB to the testing vehicle Vehicle Type Crash position differs from different vehicle types Barrier Source As reliable MDB finite element models are provided by ETA the user can use ETA models which means to select the default VPG option If users want to use other MDBs the External option can be selected to import the model into the current databases The schematic diagram for each parameter will be displayed when the user puts the mouse under the specific parameter during the parameter settings For example when the user pu
33. local coordinate system and the global coordinate system is the default 2 Enter the rotation angle in the Angle input box 3 If the Reverse Direction option is toggled on it will rotate round the negative direction of the selected coordinate system e Round N1 gt N2 1 Select two nodes and the positive direction of the rotation axis is the vector direction from N1 to N2 2 The default rotation direction is defined according to the right hand rule The thumb points to the positive direction of the rotation axis and the bending direction for the other four fingers is the rotation direction 3 Enter the rotation angle in the Angle input box 4 lf the Reverse Direction option is toggled on the positive direction of the rotation axis is the vector direction from N2 to N1 2 Select the target component to rotate Presently the target components that can be rotated and transformed include the following models e Models in the standard road library provided in the VPG Structure 70 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground e Road models defined by the user e Created parametric road models e Various tire models created through the tire module 3 1 5 Delete Component The components that can be deleted include various road tire and suspension models provided in the VPG Structure Delete Component Sloe Component haaamale Apply Close Select the target component and click the Ap
34. lt Figure 1 illustrates the frame area selected by the user lt Figure 2 illustrates only six elements are selected when Inside Region is toggled on lt Figure 3 illustrates nine elements involved in the frame area are selected when Inside Region is toggled off Frame Area Inventium PreSys 2012 R3 dl e F Chapter 2 PreSys Instructions An T Inside Region is activated Inside Region is toggled off 3 By Other Methods All Click this button to select all entities regardless if they are displayed or not Highlighting will be shown on all entities and those entities which are in parts currently off Displayed Click this button to select all entities currently displayed Parts which are off are not included in this selection By Click this button to pop up the options for selecting the entity by different methods as illustrated in the following figure By Cursor T Ps i F E j i s i q a J ri Trace By Attached Inside Region By Other Methods Selection Options Exclude Reet Reset cse lt By ID It allows the user to select the entity by entity ID The user may enter a single ID to select an entity or enter the range of the entity ID to select multiple entities 27 Inventium PreSys 2012 R3 28 P Chapter 2 PreSys Instructions Range Cancel lt By Part It allows the user to select the entity by parts Click this option to display th
35. o E B Lower Arm Left yo E Hand Lef 1 Upper Leg Right ro a Lower Leg Right io F Foot Right jo E Upper Leg Left fo F I oE Foot Left E gt After creating the dummy assembly directory for each level the user is allowed to set its contained parts for this assembly through the button followed by the assembly Click the button followed by the assembly to display the SET_PART dialog as illustrated in the following figure 82 Inventium PreSys 2012 R3 e P Chapter 3 Virtual Proving Ground E p Keyword Selection SET_PART OPTIONS Choose OPTIONS Choose i p Title a CARD2_COLUMN 1 CARD2_LIST_GENERATE 1 1 LSTC HYBRID III 2 HAND LEFT SID DA1 DA2 DA3 DA4 S 3 HAND RIGHT 18 0 0 0 0 4 LOWER ARM LE 5 LOWER ARM RIC SET 6 UPPER ARM LEI 0 PART 7 UPPER ARM RIG 8 FOOT LEFT cantons hA 9 FOOTRIGHT 4 we p New i Save a Accept Double click to set THIRD ATTRIBUTE DEFAULT VALUE to default value 0 The user is allowed to select the part set from the right list or create the new part set Then click the Accept button to return to the dummy tree task panel For example the user clicks the part set button followed by Upper Arm Right and select the part set constituting the right upper arm in the displayed Keyword Selection dialog Then this part set ID will be displayed in the dummy tree as illustrated in the following figure Assembly loo
36. on the three tabs Tab 1 Belt This tab facilitate the user to generate the 2D and 1D elements on the seatbelt and fix the seatbelt on the automobile or the seat through the rigid connection Seatbelt Belt Retractor Slipring Orientation select End Anchor Node 0 select Orientation Node 0 Select Reference Part Shell 0 ki Parameter Belt Width 50 0 Offset Clearance 5 0 Element Size 10 0 Begin 1D Length 60 0 End 1D Length 60 0 m m m m m W Create Beam at Begin W Create Beam at End Preview Apply Close Select Begin Anchor Node Select End Anchor Node Select the start and end node of the seatbelt Inventium PreSys 2012 R3 o 2 P Chapter 3 Virtual Proving Ground As for the upper seatbelt it is advisable for the user to select the node on the automotive B pillar as the start node and then tick on Create Beam at Begin option in the lower of the tab The program will automatically create the rigid element and beam at this node position and connect the seatbelt element to the automotive B pillar as illustrated in the following figure Begin Anchor Node at B pillar ZA Rigid Element and Beam Select the node on the seatbelt connecting wth the seat as the end node The program will automatically create the rigid element and beam at this node position and connect the seatbelt element to the seat as illustrated in the following figure 92 Inve
37. option can be activated only in Pick Box Select the entity inside the rectangle Click the left mouse button and drag the mouse to define the two diagonal vertexes of the rectangle Please Note the shortcut key for Box is B left button of mouse Polygon Select the entity inside the polygon Click the left mouse button to form the vertexes of the polygon Successively press the middle mouse button to close the 25 Inventium PreSys 2012 R3 2 26 pP Chapter 2 PreSys Instructions polygon and click the right mouse button to cancel the vertexes in the last selection Please Note the shortcut key for Polygon is Z left button of mouse Circle Select the entity inside the circle Click the left mouse button and drag the mouse to define the center of a circle and its radius Please Note the shortcut key for Circle is C left button of mouse Freehand Select the entity inside the region Click the left mouse button and drag the mouse around any arbitrary region to form the free area Please Note the shortcut key for Freehand is F left button of mouse Inside Region After this option is toggled on only when all parts of the entity are included inside the selection region this entity can be selected Otherwise the entity that intersects the boundary with the select box will also be selected This option can be activated in Box Polygon Circle and Freehand The following figures illustrate its usage
38. point location on the line midpoint of a line center of a circle or an arc any point location on the surface and point location on the current work plane nearest to the cursor location will be automatically captured Each method has its corresponding icon and the corresponding option will be activated clicking on its icon Once again the option will be cancelled It enables the user to select one or multi 4 methods by activating one or more icons simultaneously ra Snap On Node Select the existing nodes in the model Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions Snap On Point Select the existing point in the model Snap On EndPoint When activated it allows the user to select the endpoint of a line ab 7 Snap On Line When activated it allows the user to select the point on the line Snap On Middle Point Select the middle point of a line Snap On Center It allows the user to select the center of a circle or an arc Snap On Surface It allows the user to select any location on the surface Snap On Current Ref Plane It allows the user to select any point location on the current work plane When this icon is activated the Current View Plane and the Grid options will be activated gt Current View Plane When activated all selected points will be on the current view plane set by the user gt Show Grid Snap Grid When activated it show and snaps the grid on the current work plane The
39. realized by modifying the parameter of the road rigid material 3 Click the Apply button to load the road model The program will automatically place the road model in the proper position according to the currently existed automobile or other model and the result is illustrated in the following figure Please refer to Section 9 1 4 Transform Component and Section 9 1 5 Delete Component for adjusting the position Inventium PreSys 2012 R3 o o pP Chapter 3 Virtual Proving Ground If multiple road models are imported or created continuously all the roads will be automatically connected with end to end as illustrated in the following figure 3 1 1 2Create Parametric Road This function is used to create the road according to the parameters of the road section gt Road Type Click Application gt Structure gt Road gt Create Parametric Road in turn to display the task panel illustrated in the following figure After the user has selected the road type from the dropdown menu of Type the schematic diagram of the section in Y direction or the view in Z direction for this road model will be displayed below it 51 Inventium PreSys 2012 R3 Pp Chapter 3 Virtual Proving Ground Create Parametric Road Type Create Plank Road Mode Fixed Moving Parameters Plank Length 200 0 Plank Height 20 0 Plank Bevel Length 10 0 Plank Interval 600 0 Road Length 9000 0 Road Width 4000 0 on
40. speed video The simulation data can be obtained through the result file specified in the simulation model DYNAFORM is not supported in this version presently 1 2 Documentation The Inventium Suite Documentation consists of Manuals Training Documentations in Functions and Tutorials The User s Manual serves as the primary description of all PreSys functions and provides the user with a description of each of these functions and the necessary mechanics of how to use them The training documentations in functions introduce usages for some special functions with cases The Tutorials demonstrate how to implement the various functions in PreSys for use in specific finite element modeling applications All these documentations can be accessed through Help gt Tutorial This documentation was created to introduce each application module facilitating the user to feminize and use each function in Inventium It is recommended for the user to know and learn the basic function and operation habits from PreSys User s Manual in learning each module Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions Chapter 2 PreSys Instructions The PreSys has a complete graphical user interface GUI that can be operated on Windows2000 Windows XP and Windows 7 The user is enabled to perform a series of operations such as file import model generation run file submitting and results processing activities with its integrated Pre and Post processor
41. the rigid part where the transmission shaft is located as the transmission shaft direction of the Revolution Joint 3 If the selected rigid part contains multiple parts it is suggested that the user toggle on the Joint Node option and select two nodes manually to define the joint direction 66 Inventium PreSys 2012 R3 07 fa P Chapter 3 Virtual Proving Ground 3 1 2 4Align Tire This function is used to adjust the Camber and Toe of the steering wheel Align Tire Tire Angle Camber E Toe Angle 3 0 Reverse Select Tie r The road is parallel to the X Y plane in the local coordinate system which is defaulted by the program When the user adjusts the tire the direction of the rotation axis is defined as follows 1 The center of rotation is located in the central position of the selected tire 2 The rotation axis of the Camber is parallel to the X axis in the global coordinate system 3 The rotation axis of the Toe is parallel to the W axis in the global coordinate system 4 When defining the right tire of the automobile the user should define the rotation angle as the negative value or toggle on the Reverse option Hy aterm Camber Front View Toe Front View 67 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground 3 1 3 Suspension The suspension model is not supported temporarily in this version 3 1 4 Transform Component Th
42. types Tab4 Job Inventium PreSys 2012 R3 P Chapter 4 DTM Module Vibration Test Punch Parameters Card solver Output File Single Job Memory 512 0000 MB NCPU 2 o E Launch solver after output file Output File Close Solver Enter the path for the solver Output File Set the path for the output files Memory Enter the desired memory with MB Unit NCPU Enter the CPU number Launch solver after output file When this option is toggled on the output files for pressure test can be automatically submitted Output File Output the pressure test files set by the user 4 4 Shock Test Icon Shock Test can simulate the response of the electric product in the different shocking frequency There are four tabs in Shock Test which includes Punch Parameters Card and Job 165 Inventium PreSys 2012 R3 P Chapter 4 DTM Module Tab1 Punch Shock Test shock Table Parameters shock Table Diameter 500 0 mm Gap between Table and Model 5 0 E mm Create Shock Table Delete Shock Table Close Diameter Enter Punch diameter in the current length units wth mm by default Gap Enter the distance between Punch and the model Create Punch Click this button to generate Punch after selecting the hit center Delete Punch Click this button to delete the created Punch Tab2 Parameters 166 Inventium PreSys 2012 R3 7 Translation O K Rotation Rotation VAD
43. 0 000000 X Add Delete Foly Line Interval 600 0 Road Length 9000 0 Road Width 4000 0 2 Select the road mode 3 Set the road parameters e Road Feature Parameters The user is allowed to the points that constitute the 2D curve by clicking the Add and Delete buttons After clicking the Add button the new curve points will be added in the list box Then click the input box of the X value behind the point ID to enter the X value for this point In a similar way the Z value can also be entered After the input box is clicked it will illustrate as the following figure Ploy Line Points No x Fi 0 0 000000 0 000000 4 10 000000 20 000000 2 30 20 3 40 0 57 Inventium PreSys 2012 R3 20 e pP Chapter 3 Virtual Proving Ground After all the points on the section curve are entered click the Graph button to display the schematic diagram of the curve above the point list e Road Global Parameters include the road length and road width Enter the feature interval and the road length and road width 4 Click the Apply button to create the road as illustrated in the following figure Feature Interval 2 Section Curve of Road 3 1 2 Tire The tire model plays an important role in the nonlinear simulation analysis of the full vehicle The structure of pneumatic tire is quite complicated which is hard to realize in the finite element simulation analysis The parametric tire modeling can be ach
44. 1 0 0 0 m Frames 15 2 C Loop Selects Globa K The user is allowed to fold the airbag up or down along the W Axis in the local coordinate system Up means to fold along the positive direction of W Axis and Down means to fold along the negative direction of W Axis 3 Fold the Airbag Several steps can be taken to fold the airbag and it may only fold part of the airbag along the fold line for each step In addition the fold method may be different for each fold Therefore the user needs to create one fold step so as to define the fold parameters such as fold type fold line and so onin this step Please Note the following aspects before folding he immediate execution is designed for airbag fold and modifications for any parameter such as the Fold Type Fold Line Angle Fold Point and Fold Side and so on can be executed in real time If the fold line is found to be out of place the user can select other node directly on the screen and the airbag can be re folded immediately 1 Create the Fold Step The following figure illustrates the control panel for Fold Step Click the Create button to create a new fold step The Delete button can be used to delete the current step Other buttons on the control panel are used to control the display or animation for each fold step and the button function specification has been annotated in the following picture Current Step Number Return to Ori
45. 4 Untitled 5 Untitled 6 Untitled 7 Graph 1 c1 945 x forceol N D Z o O o 1S _ e LL 8 Time 1072 thickness display mdl Display Area for Horizontally splitting and Multiple View of the Model 2 4 7 Change the Solver PreSys can be configured to work with various MCAE solvers By default the model template will be set to LS DYNA To change this default value the user may go to the TOOLS drop down menu and select OPTIONS CENTER A window with various categories of options which may be controlled by the user is presented Select the IMPORT EXPORT option and the TEMPLATE 21 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions 22 SOLVER option contained there To change the solver template select the DEFAULT SOLVER field as shown in the following figure Selecting OK will set this as the default for future models The user can find additional customization options by viewing the TOOLS CUSOTMIZE and OPTIONS CENTER When any of these options discussed here are changed PreSys saves them in s configuration file which is loaded each time the user accesses PreSys You can reset all of the options by going to the Options Center and selecting RESET which will reset all options back to the original installation condition Option Center Category Directory General Default Solver EQ view LS DYMA sh a RE Rosie HE General MISA o ES Solver Template
46. 78 Inventium PreSys 2012 R3 20 P Chapter 5 ALE FSI Setup Defir ALE Card Define Card Defined ALE REFERENCE SY NO ALE SMOOTHING NO ALE TANK_TEST NO ALE REFERENCE SY NO ALE REFERENCE SY NO ALE REFERENCE SY NO ALE MULTI MATERIAL NWO SET MULTI MATERIAL NWO ALE FSISWITCH MMG NO ALE UP_SWITCH NO ALE FSI_PROJECTION NO CONSTRAINED LAGR NO CONTROL_ALE No DATABASE FSl NO EOS_ LINEAR _POLYW NO E0OS JWL NO E0S_JWLEB NO EOS GRUNEISEN NO EOS_IGNITION AND NO EOS_IDEAL GAS NO INITIAL_DETONATION No INITIAL VOID NO INITIAL_VOLUME_FRA NO ii OK Apply Close Double click the keyword to be defined to enter the keyword editor and then the user can create delete or modify the keywords 179 Inventium PreSys 2012 R3 oy e P Chapter 5 ALE FSI P Keyword Editor ALE REFERENCE_SYSTEM_SWITCH ID 3 ID Title 4 T1 T2 T3 T4 T5 T6 LE 0 0 0 0 0 0 0 TYPE1 TYPE2 TYPE3 TYPE4 TYPES TYPE6 TYPE7 TYPES E 4 m 0 Jo al al Jlo gfo glo ol g ID1 ID2 ID3 ID4 ID5 ID6 ID7 IDS Delete COMMENT Save ai Close Description of Fields 180 Keyword editor Task Panel Option New Creates new keyword Delete Deletes the selected keyword Save Saves new created keyword or modified keyword Close Closes the keyword editor and return the ALE FSI Card tab 5 5 Others As for other operations unrelated to ALE such as sett
47. Ee MBE 2 7 6 Select Coordinate Window cccccccceccceeeeceeeececeeeceeceeseeenentteteeeeeenens HRI EEE 2 7 7 Select LOS ee Pe RAR KE MSE 2 8 Model TreC cecsecccsecsssesecsseseseesesessesscevsesaveesesevsessvensesvenseseveeseetees RR IE MBE 2 9 Cross Referente ccccscssececsssesecesseseseceesesecceescscerstsesveceteesevereeneceee RR XE HE Chapters Virtual Proving Ground ss ssssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 4O Inventium PreSys 2012 R3 Table of Contents 31 GEICO aeran act ausiesonaiaivaesadane sensnecneeumcaeset 46 3 1 1 ROA Rares SEE ee ae cee eee ie eee en eg ee ee one ee ee ner eer ee on ee 46 3 1 2 OMIT cei uh ttt ae ease bed el tee Me eid del AEE Sa A E neta AES Mee te teed AEE T T 58 3 1 3 SUSPENSO a caste Eaa ts ateunbvddbaabve dea sadal mniudteamellatednbuagasuaysetvavchdeledsbvedecintidaldauss 68 3 1 4 Iranstorm COM ponent saccudemsiadicunritou nal halduntucusesbuedecs ukdalduwdvdudeanih Anie AE A 68 3 1 5 Belete Com pone NU beac Sasa cel eet used ded Set daa ea ted ead aed neal Sa ceded oan al 71 E72 bY ern ia oe oe ne RS meee ee OEE Pe RE ACH ee eee ee een ee eer ee 72 3 2 1 BN alah fee oeenen ey a Tern TT tere ann Tere TY Mer Mir a TT eer ee rrr TT errr at 72 3 2 2 Seal CUSMIOMDSIORIM ANON site ise reuters eit clase Bel iat A ait Mein A 88 3 2 3 SSS 12 14 5 Re Ee eee ea Ie eA PR ee ROA aOR eek PT en ee deen er eee 91 3 2 4 CAS IIS CIV OM sic ete eradicate ay a ee eGuide ele a
48. EfLowerArmRight 5 6 E Hand Right fita aal 0 Et Yoke Left aad 4 0 Upper Arm Left Ceda EfLowerArmLet 4 2 0 Hand Left haal ial E Upper Leg Right 43 42 Lower Leg Right fatal kaa B Foot Right g 14 E d Upper Leg a FI Lower Leg Lett Delete 87 Assembly dummt_2 B Torso JG o E Yoke Right 45 9 F UpperArmRigt 7 7 O Lower Arm Right FA e E i Hand Right Lad s4 E Et Yoke Left laad ha 0 E Upper Arm Left m 3 F Lower Arm Left ra 2 E Hand Left 2 E EI Upper Leg Right 43 42 LowerLegRigt 44 43 O gt Foot Right g 44 a Upper Leg Left a2 29 E a Lower Leg Left io Fio E 5 Repeat the above steps 2 and 3 Select the corresponding part set and stop angle for Lower Leg Left The result is illustrated in the following figure Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Modify Dummy Current dummy_2 7 H Paint 0 0 0 0 0 0 E dummy_2 Torso Yoke Right _E Upper Arm Right EF Lower Arm Right Hand Right Yoke Leff U pper Arm Left E Lower Arm Left ta o hs a a ho sPEEEEBERE aaa Hand Left Upper Leg Right Et Lower Leg Right 44 gt Foot Right lo E Upper Leg Lef 42 Ei Lower Leg Left 40 Foot Left lg 44 lf the user wants to modify the defined part set or stop angle rig
49. Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Seatbelt Crash Regulation Belt Slipring Orientation H Point 0 0 0 0 0 0 Select End Anchor Node 0 Select Orientation Node 0 Dummy Source VPG Select Reference Part Shell 0 Dummy Type SID paame Belt Width 50 0 External Offset Clearance 5 0 File a ElementSize 10 0 Invoke Begin 1D Length 60 0 End1DLength 60 0 Create Beam at Begin Create Beam at End Preview 4 Cards The user is allowed to access the Card tab after the seatbelt is assembled for the dummy Crash Regulation Regulation HEI CONTACT E Dummy to Vehicle J CONTROL CONTROL_ENERGY CONTROL_OUTPUT _ CONTROL_TERMINATION O E CONTROL_TIMESTEP HJ DATABASE ASCII B DATABASE_ELOUT l B DATABASE_GLSTAT l B DATABASE_NODOUT B DATABASE_RCFORC l E DATABASE_SECFORC 0 B DATABASE_SLEOUT MPS MATAQDACEIAIMARYY The Card tab is used for the user to set contact model calculation time and output parameter controls and so on 110 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground 111 According to the Barrier and Dummy tab settings by the user the program automatically defines some parameter cards which are toggled with green check mark However some parameters need to be defined manually based on the actual situation which are toggled with red check mark lf the user wants to modify one of the parameters double click th
50. MVSS 214 and FMVSS216 are created in the current database and only the test device and Contact and Rigid wall for the test condition under FMVSS 214 are displayed The following figure illustrates their display situations 115 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground FEU E ponies ety tA a 1 a oat Wg a ph Min me t want 4 Export If the user sets multiple regulations for testing simultaneously the user needs to export them one by one There is an export control box behind each of the regulation directory on the Regulation window and the corresponding regulation condition will be exported when it is toggled on Otherwse it will not be exported For example the user set two test conditions FMVSS214 and FMVSS216 for a vehicle it needs to export FMVSS214 first for calculation The operating steps are listed below gt Only toggle on the export box under FMVSS214 on the Regulation window as illustrated in the following figure 116 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Regulation Info HE Regulation A fy FMVSS214 Ga EF Component Barrier ETASID Keyword F SET_PART O L INITIAL_VELOC O z E CONTACT F E RIGIDWALL_PL O SET_PART a E CONTACT E z J FMVSs216 P Component 3 fa Roof Keyword dama mE BOUNDARY P O O E CONTACT mM F gt Select File gt Export
51. P Chapter 3 Virtual Proving Ground Pedestrian Protection Headtorm Legformn Upper Legform All gt Start Analysis HIC13 232 03 530 32 411 94 518 72 532 44 ie gar 44 11 1790 84 al noe J Headform W Score Hic Legtorm Score 5 UpperLegform Score 1 Enter the folder Select the test folder exported in Postprocess Please Note With this function it will automatically search each subfolder and the file name for the pedestrian protection exported in Postorocess As a general rule the user is not recommended to modify each file name or folder name 2 Click the Start Analysis button the program will automatically analyze each impact point Different calculation results will be achieved for different testing task panel For example It will calculate HIC15 and the score for each impact point in the Headform task panel 3 The list marked with 3 will give the analysis result Please pay attention to the following aspects in this list gt The contents in the list vary with different testing panels gt It will calculate the score for each impact point on each task panel The score will be marked with different colors according to the standard 136 Inventium PreSys 2012 R3 137 P Chapter 3 Virtual Proving Ground gt The color of the impact point accords with that of the score in the display area When the user selects the impact point in the list the corresp
52. The VPG option is selected by default which means to use the dummy provided by ETA Abundant dummies are provided by ETA for the user to select The user is also allowed to import other company s dummies through the External option Dummies of mainstream companies on the present market are provided by PreSys such as LSTC ARUP and so on If the tree structure of the external dummy is unsupported by PreSys the user could create the dummy tree of ETA format so as to position it by the Create Dummy function in the Invoke box After selecting the dummy source click the Apply button to position the dummy to the H Point location defined by the user Create Dummy If the user imports the external dummy and the dummy tree is not supported by PreSys this function is used to create the dummy tree of ETA format so as to position it Click the Create Dummy graph to pop up the Create Dummy window as illustrated in the following figure The user is allowed to define each joint of the dummy on this window so as to rotate and translate it Please refer to Section 9 2 1 4 Create Dummy for detailed operation about this function This operation can be ignored if the user selects the dummy of ETA Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Crash Regulation Regulation Barrier Dummy Cards Create Dummy H Point 0 0 0 0 0 0 H Point 0 0 0 0 0 0 he Assembly O Dummy 2 Torso Hio Dummy Source VPG Dummy
53. Type SID O External File Invoke Position Dummy Reposition the dummy and rotate the dummy joints to ensure the proper hand and foot positions of the dummy Click the Position Dummy graph to pop up the Position Dummy window as illustrated in the following figure The user is allowed to refit the dummy position on this window and rotate each joint Please refer to Section 9 2 1 2 Position Dummy for detailed operation about this function 107 Inventium PreSys 2012 R3 a P Chapter 3 Crash Regulation H Point 0 0 0 0 0 0 Dummy Source VPG Dummy Type SID External File Invoke Virtual Proving Ground Position Dummy Current ETA SID Translate H Point0 0 0 0 Drag In XYZ Space Along X Axis Along Y Axis Along Z Axis O In XY Plane In YZ Plane In XZ Plane Reset H Point The user is allowed to close some parts that block the view through the Parts On Off function when positioning the dummy The following figure illustrates the model after the dummy is 108 positioned Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Create Seatbelt Assemble the seatbelt for the dummy Click the Create Seatbelt graph to pop up the Create Seatbelt Window as illustrated in the following figure The user is allowed to create the seatbelt on this window Please refer to Section 9 2 3 1 Create Seatbelt for detailed operation about this function 109
54. Wloldex30 a BS Moldex3o Py GeomModeling By Preprocess H E Postprocess BS Satety FQ OTM Eg FSI Solver Template Selection Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions 23 2 5 Mouse Functions All PreSys model rotation pan zoom functions are accessible via selection using the left mouse button To access a function the user selects the desired button and the ctrl key on the keyboard simultaneously The following table shows the corresponding functions for combination of mouse and keyboard selections by default Left Click Ctrl Free Rotation Middle Gok Ctr Scroll Middle Mouse Button Scroll Wheel Double Left Click Ctrl Set Rotation Center If the user has a wheel mouse the scroll wheel may be used to zoom in out centering on the mouse location in the Display Area Scrolling the mouse wheel toward the user will zoom in Scrolling the mouse wheel away from the user will zoom out Users are allowed to customize different mouse operations according to their own habits As is illustrated in the following figure select the shortcut key from the View menu in the Tools gt Option Center the user can define the corresponding functions for combination of mouse and Ctrl Shift Alt in the right p Option Center Category Value Directory Name Value H E General Cir ShivAlt Button 1 Rotate B HO View Ctrl ShifvAlt Button 2 Pan o Background Foregr Ctrl ShifvAlt Button 3 Zoom FJ Display Settings
55. X When this option is selected the files for models at different angles can be batch output 157 Inventium PreSys 2012 R3 dl P Chapter 4 DTM Module Rotate About Y When this option is selected the files for models at different angles can be batch output Single Job Output the current model and submit it Memory Enter the desired memory wth MB Unit NCPU Enter the CPU number Run it Now Click this button to run the task 4 2 Pressure Test Icon Tp Pressure Test simulates the force result in the pressure which is loaded with the time There are four tabs in Pressure Test which includes Punch Parameters Card and Job Task Panel Options Tab1 Punch Pressure Test Pressure Punch Parameters Card Job Pressure Punch Diameter m mm Offset by Direction 1 mm Direction Method Global LECS n a Select CS Global Normal Vector n a Select Element H Direction Axis XU F YV ZIW XIU O YIN Center Hit Center n a Select a Node 0 Create Pressure Punch Delete Pressure Punch Diameter Enter Punch diameter in the current length units wth mm by default Offset by Direction The distance between Punch and the model Direction Method The user is allowed to define the Punch by using Global LCS or Normal 158 Inventium PreSys 2012 R3 2 P Chapter 4 DTM Module Vector Direction Axis When the user selects Global or LCS this option can be used to define the axial directi
56. Y Z direction in the global or local coordinate system Increment x 11 0 Y 1 0 1 0 m Reverse Direction L J 1 Click the Select CS Global button to set the local coordinate system and the global coordinate system is the default 2 Enter the translation distance in each direction of the X Y Z input box 3 The component will translate along the vector 0 0 0 gt X Y Z in the local global coordinate system 4 lf the Reverse Direction option is toggled on it wil translate along the vector X Y Z gt 0 0 0 2 Select the target component to translate Presently the target components that can be translated include the following models e Models in the standard road library provided in the VPG Structure e Road models defined by the user e Created parametric road models e Various tire models created through the tire module gt Rotate Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Transform Component Translate Rotate Direction Round Z Axis O Round N1i N2 F Reverse Direction Select CS Global Angle 1 0 SelectComponent Apply Close 1 Select the rotation direction e Round X Y Z Axis Rotate round the X Y Z Axis of the defined global or local coordinate system 1 Click the Select CS Global button to set the
57. a There are eleven comparatively typical road models provided by ETA which is used to realize the parametric settings and the detailed information is illustrated in the following figure Plank Road View of Section 52 Inventium PreSys 2012 R3 a SP crepters virtualProving Ground Chapter 3 Pothole Road Length View of Section Curb Road View of Section Roof Road View of Section Poly line Road Vary with Parameter Virtual Proving Ground Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Sine Road View of Section Crown Road View of Section xa oot Pat a L L L a Twist interval Small Wy Uy j wist Road iene N Twist Width 54 Inventium PreSys 2012 R3 2 0 pP Chapter 3 Virtual Proving Ground Length View of Section Fish Scale Road Ramp Road View of Section gt Road Mode Fixed The road is immovable Moving The road has its freedom in X direction Please Note The rigid material model of LSDYNA MAT_020 MAT_RIGID is adopted for the road modeling After the road is imported the default settings for the fixed mode is CMO 1 CON1 7 CON2 7 and for the moving mode is CMO 1 CON1 5 CON2 7 If the freedom in other direction is wanted it can be realized by modifying the parameter of the road rigid 55 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground material gt Setthe roa
58. actor Offset Clearance 1 0 m Translate Along X Axis Along Y Axis Along Z Axis Distance 1 0 ane Rotate Impact Angle 1 0 ae Reverse Seledimpador 1 Offset It is used to offset along the initial velocity direction of the impactor model The user can adjust the initial distance between the impactor and the model car to avoid the initial penetration 2 Translate Itis used to move the impactor along the X Y and Z axis in the global coordinate system 3 Rotate Itis used to rotate the model around the central axis of the Headform or Legform 4 Reverse When this option is toggled on it can translate or rotate the impactor in the opposite direction of the defined direction gt Delete It is used to delete the impactor 4 Export the model After the user has adjusted the impactor click the Export button on the task panel to export the analysis file 130 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Export Legform File Assessment Parameter for Post Label Value E Untitled 4 dyn Node for Tibia Deceleration 0 m e Element for Knee Shear Displacement 0 E i Element for Knee Bending ngle 0 Export Path Path Pedestrian Legform Apply Close gt When exporting the file the user needs to set the measurement parameters of the impactor on the Export task panel in order for the user to view the analysis result of each impact p
59. aeeeeeeeeeessessaneeeeeeeeeesns 4 Chapter 2 PreSys INSUIUC TONS assirian inniinn aaa D 2 1 Opening Creating a PreSys Database File cc ceccseeesceessneeesseeesseeesssneesssneessaees 6 22 60 I IOT Sener ee eee Or nnn ae nce ne ene eee eee eae ee 8 23 Mont y eenn ee ee eee eee 14 2 4 User Interface Customization oo cccccccceceesccccsseseeeeeeeeueeeeeeeesesssesesecsesaaeeeeeeeeeeneeey 16 2 4 1 MOVNO TOODA cpasnctucsans cides sttaectacaesanitadsonscnesacisiosuiaentaaaie E E 16 2 4 2 TUMO ONF OFF TOODA a rrepa EESE E E E EErEE ESER EEES rsi ek 16 2 4 3 OGEI CONS aea E E ee eee 17 2 4 4 MOOGI ss a E E R eee 18 2 4 5 HON UREY ra E E E ee ee eee 18 2 4 6 DSD AIG T r E T A E E A E E 20 2 4 7 chande TAS OVET aaea E E A O E A EE E E EE 21 29 MOUSE FUNCION ereer E 23 L0 Koad EN e eR ee E ee 24 2 7 Entity Selections eee ccececcescecesseeeesseessseeeesseeecssseessseeeseeseceseeeesusesesaeasssaeessseeesseeeesas 25 2 7 1 Commonly Used Selection Modes ccccccccceceeessseeeeecenseseeeeeeeensnenees FARR FE MBE 2 7 2 Select Node WiNdOW ccceeeeeeeeececceeecececeeeeeeeeeeeceeeeettttttttteaeeneeeeees HRI EMS 2 7 3 Select Element Window cccceeeeeeeccecceeeeceeeeeeeeeeeeeceeeceenenttneeeeeeness HRI ESE 2 7 4 Select Line WiINdOWS cccceeeeeeeeececeeeeeeeeeeeeeeeeeeeeeeeeeetntttttteteneeeeeees RIE MBE 2 7 5 Select Surface Window ccceeceeeeececccececeeeeceeeeeeeeeeeeeeettttttttaneneeeeees HRI
60. ag model ultimately through Ls Dyna solver calculation The airbag model created with this method is closer to the engineering practice The user is allowed to access this function from the Application gt Safety gt Airbag gt Dyna Fold dropdown menu 144 Inventium PreSys 2012 R3 pP Chapter 3 Virtual Proving Ground Airbag Dyna Fold Type Trunk Fold Trunk Fold Trunk Section Shape D C O Trunk Section Length 100 0 Trunk Section Width 60 0 Trunk Section Radius 10 0 Airbag Final Height 20 0 Element Size 10 0 Select Airbag Parts 0 Type It only supports the Trunk Fold type presently The following two figures illustrate the fold result after submitting the solving and the relative locations of each part before folding for the Trunk Fold type respectively Click the Apply button based on the settings by the user and it will generate three parts Trunk Plate and Stick Among which Stick will move upward and then Trunk moves downward and places the folded airbag at the top of Trunk ee Sa ye ae i i ONIN ee H Y re ay a After Dyna Folding 145 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Trunk a l Airbag Plate aE Stick Relative Locations of Each Part before Dyna Folding Trunk Section Shape The following table illustrates three different section parameters epeuonnadlis Required parameters for Section Sesioniianaik v Section Length e
61. ameters have been experimentally verified and can be directly used in various simulation analyses such as Fatigue e The tire texture and the sidewall of the tire use the elastic material and the element type is the shell element e The rim consists of the rigid shell element e The airbag model is adopted and the inflation pressure of the tire is PV T constant Where P Pressure V Volume T Temperature 2 Composite Tire The tire is created with the composite material and the user is allowed to select the material type of the tire What s more the user also needs to set the corresponding material parameters 3 Matrix Tire All other parts use the shell mesh for modeling except the tire tread 59 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground The tire use the composite material MAT_118 for modeling The user needs to set the corresponding material parameters when it is used 2 Set the tire parameters Select the corresponding tire size according to the wheel type When your mouse hovers over the relative parameter the program will automatically display the schematic diagram of this parameter as illustrated in the following figure Create Tire Type WPG Tire B Parameters Reston Width mm 195 cI Section Width The illustrations for each parameter are listed in the following table Schematic Diagram for Tire Specifications Section Width Section Width Unit mm 60 Invent
62. and Down buttons as illustrated in the following figure jp te TM E ColumnTree ColumnDisplay w Leelee Columnintfo 3 The model tree can be used to display 1D element identifier and beam element profile shape When the user toggles on the 1D Element Profile On option under the Element Node subdirectory the profile feature of beam element with special profile will be displayed in the display area as illustrated in the following figure 10 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions Model Info Part 121 Coordinate System 51 G Element Node 10784 s BEAM 26 DISCRETE 10 SHELL 5944 SOUD 4760 Ss JOINT 44 A fee 1D Element Identifier On cD Element Profle On Element Orientation On Free Nodes On Non Structure Nodes On When the user toggles on the 1D Element Identifier On option under the Element Node subdirectory the 1D element will be marked with the letter in the display area as illustrated in the following figure via OOO Model Info E Part 121 Coordinate System 51 SOs SHELL 5944 SOLID 4760 JOINT 44 lt ID Element Identifier On 1D Element Profile On fe Element Orientation On Free Nodes On Non Structure Nodes On 4 The model tree can be convenient for the user to change the part or coordinate color i
63. and each solver corresponds to various keywords for best simulation effect The model tree contains the keyword subdirectory When the user right clicks this directory all Keywords of the corresponding solver can be listed in alphabetical order which is convenient for the advanced user to create or edit The following figure lists the corresponding keywords under the LS DYNA template 12 Inventium PreSys 2012 R3 13 P Chapter 2 Model Info PreSys Instructions hs H Part 121 Coordinate System 51 E3 ElementNg Geometry fees H Reference LE Referenced BOUNDARY E Material 1 COMPONENT G Property 1 CONSTRAINED BCS 0 CONTACT a CONTROL CONTROL IMPLICIT CONTROL MPP DAMPING DATABASE DATABASE ASCII DATABASE BINARY DEFINE DEFORMABLE EF ELEMENT EOS HOURGLASS INCLUDE INITIAL INTEGRATION INTERFACE LOAD MATERIAL OTHERS PART PERTURBATION RAIL RIGIDWALL SENSOR TERMINATION UNKNOWN KEYWORD USER T F F a ee ee ee ee ee ee ee F ORSON Inventium PreSys 2012 R3 e P Chapter 2 PreSys Instructions 2 3 Menu System File Edit View Preprocess Application Tools Window Help All functions in PreSys can be accessed through the main menus The user selects a menu by mouse picking or keyboard entry The detailed functions for these main menus are illustrated as follows 14 FILE Imports and exports data to and from PreSys Creates opens saves and prints database file
64. appears in the right click menu of the subdirectory By default each function is toggled on p gt Customize Shortcut keys Menu Content z Menu Items Display E Menu B Main Menu H amp File amp Edit View P amp reprocess Application amp Tools amp Window Gl amp Help EI Pop up Menu In Model Tree H POP Element Node POP Geometry POP Reference Plane POP Reference Axis POP Material POP Property POP B C S s lt lt lt I J e e H d lt lt lt a lt 2 4 5 Shortcut Keys All PreSys commands can be programmed as shortcut keys using the TOOLS CUSTOMIZE menu at the top of the PreSys window A window will open Activate the SHORTCUT KEYS tab and select the desired keyboard letters or symbols to associate with a specific command The program predefines some function shortcut keys according to different operating frequencies of each function as illustrated in the following table 18 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions Cn ome e o Cn me ours e e we e o Ce eomas a romeo Ce reen o O r Users are allowed to create shortcut keys according to their own habits and the specific processes are as follows 1 Access the Customize window as illustrated in the following figure 19 Inventium PreSys 2012 R3 Toolbars shortcut keys 7 2 aM OG gt s G
65. apter 5 ALE FSI gt Mine Center Set the center position of the explosive source The user can select Above or Below horizontal Plane as the explosive source The horizontal plane is the XOY YOZ or ZOX plane that vertical to the selected direction under the global coordinate system Explosive Dimension Define the dimension of the explosive source and its distance with the horizontal plane gt If the explosive shape is Cube Length Width and Height should be defined in the box gt If the explosive shape is Sphere Radius should be defined in the box gt If the explosive shape is Cylinder The Length and Radius of the bottom should be defined in the box gt Distance This option is used to enter the distance between the explosive source and the horizontal plane that is the XOY YOZ or ZOX plane vertical to the selected direction under the global coordinate system Zone 1 Set the dimension and material for Zone 1 gt If the explosive shape is Cube Length Width and Height should be defined in the box gt If the explosive shape is Cylinder The Length and Radius of the bottom should be defined in the box gt Material Set the type of the explosive zone The program can automatically generate the material and state equations according to the selected type and the type includes Soil Water and Air Zone 2 This is optional When this option is toggled on Zone 2 will be created The shape for Zone 2 Is identical to Zone 1
66. ars from the user interface by selecting them from a list of standard toolbars The user can access this list by right clicking the mouse in the toolbar areas at the edge of the Display Window This is shown in the following figure 16 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions E ee A Beagse A6 A Ea a 7 Ei Show Toolbars Customize w Standard w View scene Reference Geometry w Line Point Surface Mesher Node Element Model Check LES Material Property Boundary Condition spotweld DTM Measurement 2 4 3 Hidden icons Toolbars that extend past the PreSys window are shown with a small double arrow Clicking on this double arrow will display the hidden icons on that toolbar EEANN TA v A F al ie Per aa D ax ia Add or Remove Extended Toolbar Display 17 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions 2 4 4 Model Tree The Model Explorer Tabs may also be positioned anywhere on the screen and docked on the right or left side of the Display Area This can be done by selecting the handle on the tab and dragging dropping it where desired The user is allowed to configure the right click menu for each directory As is illustrated in the following figure the user can access Tool gt Customize through the main menu successively The Customize window will pop up and the Display box in the right of the window can control if each function
67. as the node and element but not saved in the database The user can create only one temporary coordinate system The previously created temporary coordinate system will be deleted when the new temporary coordinate system is created Select Temp LCS Click this button to select this coordinate system if the temporary coordinate system has existed in the model New LCS It allows the user to create the new coordinate system After creating this newly created coordinate system will be selected by the user Inventium PreSys 2012 R3 a e P Chapter 2 PreSys Instructions This coordinate system can be saved in the database There are four methods available for creating the coordinate system 45 Inventium PreSys 2012 R3 p Chapter 3 Virtual Proving Ground Chapter 3 Virtual Proving Ground The Virtual Proving Ground VPG technology was developed by ETA in 1995 which is mainly used in automobile simulation analysis at system level including the fatigue life analysis for full vehicles nonlinear dynamic analysis for full vehicles NVH analysis and crash safety and occupant protection and so on The VPG technology is based on LSDYNA solver and developed on PreSys the commonly used pre processing and post processing platform of ETA which mainly includes the following two aspects 1 VPG Structure It provides abundant models required for creating the simulation analysis of the durability for system level including the following aspects
68. ate Impact Point Click the Create button to display the Create Impact Point task panel as illustrated in the following figure Create Impact Point Point Type Child Headform O Adult Headform Legform Upper Legform Name 00 Apply Close 1 Select the impact point type on the Create Impact Point task panel 125 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground 2 Enter the Name for the impact point 3 Click the Select Coordinate button to select the position of the impact points 4 Click the Apply button to finish the creation of the impact point gt Translate Impact Point Click the Translate button to display the Translate Impact Point task panel as illustrated in the following figure Translate Impact Point Direction Along A Axis Along Axis Along Z Axis Ni N2 Increment C Reverse Direction Distance 1 0 m ___ SelectimpactPoints 0 v Apply Close Several ways are provided for the user to translate the impact point in the task panel illustrated above 1 Along X Y Z Axis Define a local coordinate system and select to translate along one of the coordinate axes of this local coordinate system and enter the distance to translate in the Distance input box 2 Ni gt N2 Select the node N1 and N2 and define the vector N1 gt N2 The vector direction is the moving direction Now the default value in the Distance input box is the magnitude of this v
69. ay switch for this assembly Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Create Dummy H Point 0 0 0 0 0 0 Et Yoke Right E UpperArm Right iog E EbLowerArmRight 19 E Hand Right o E EI Yoke Leff lo Upper Arm Le yo E E Lower Arm Left o F Hand Left yo E E Upper Leg Right jo E LowerLegRigt ig gt Foot Right oy Upper Leg Left i E Sj Lower Leg Left o E Foot Left o E case The user can access the Create Dummy task panel as illustrated in the following figure with Application gt Safety gt Dummy gt Create Dummy menu 79 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Create Dummy H Point 0 0 0 0 0 0 o Assembly Sa O Dummy 1 Torso jor E OK Close H Point The user specifies the H Point Coordinate for the dummy After the dummy is created this H Point is based when the user move or rotate the dummy Assembly When the user crates the dummy tree the subdirectories for each level of the dummy tree is each assembly of the dummy which can be rotated when it is positioned In the initial state the dummy tree is empty and the user can add each assembly through the right button function gt Right click Torso to display the submenu This submenu contains the dummy assembly that is connected with the current assembly as illustrated in the following figure 80 Inv
70. by the right side plus and minus arrow or drag on the screen with the mouse Reset All Angles Restore the dummy to its initial state Apply Rotate the dummy Close Closes the Dummy Position Task Panel 3 2 1 3Delete Dummy This function can be used to delete the imported dummy if there are any problems in the model The imported dummies are listed in the list as illustrated in the following figure The user is allowed to select it from the list or click the dummy to delete on the screen and then click the middle mouse button or the Apply button to delete the selected dummy After the dummy is deleted click the Close button to exit the task panel Delete Dummy Dummy ETA_DF50_DUMMY Apply Close 3 2 1 4Create Dummy If the user wants to use the dummy model of other company and the defined dummy tree structure is not the one by ETA LSTC and ARUP or the mainstream structure in the current market it is necessary for the user to use this function to create the dummy tree for the dummy so as to position or modify it in PreSys The user needs to create the dummy tree only once After the dummy tree is created and the model is saved and exported the program will automatically record the dummy tree structure so as to use directly in subsequent operation The dummy tree is illustrated in the following figure Each line represents one of the dummy assemblies There are two buttons in each line which indicates Part Set IDs and displ
71. ch does not have any effect on DYNA calculations However it can be displayed in Postprocess facilitating the user to view conveniently e Line It represents the Wrap Around Distance WAD with the line and these lines cannot be displayed in Postprocess 121 Inventium PreSys 2012 R3 dl P Chapter 3 Virtual Proving Ground Impactor The impactor model includes the Headform Legform and Upper Legform which corresponds to the Headform Test Legform Test and Upper Legform Test respectively After creating the impact zone or impact point the user is allowed to access the corresponding operation page according to the selected test type The Headform Legform and Upper Legform pages facilitate the user to import the impactor and export the DYNA file with the similar operations The following figure illustrates the Headform impactor operation page corresponding to the Headform Test Pedestrian Impact Parameter Child Head Angle Adult Head Angle CIA Head Velocity 11100 0 GA Head Clearance 20 0 Impact Points All Points 0 Selected Point Select Impact Point 0 E Operation On Off Points Create Translate Delete impactor VPG Child Adult Operation On ott Transform Export Delete The main operations in the impactor page are as follows Apply 1 Impact Parameter Settings The default values for the impact parameters are based on the corresponding pedestrian
72. ction Len Rounded S v Section Width Rectangle v Section Radius The section length and section width must be greater than the radius of the airbag inlet 146 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Required parameters for Section Section v Section Length v Section Width The section length and section width must be greater than the radius of the airbag inlet Rectangle Section Length Section Radius l Required parameters for Section Y Section Radius The section radius must be greater than the radius of the airbag inlet Roundness Airbag Final Height The final height after the airbag is folded is illustrated in the following figure Airbag Final Element Size It is the basic size for the mesh of compressing airbag device The program will automatically create the mesh according to this size Select Airbag Inlet The user tis allowed to select the airbag inlet as illustrated in the following figure 147 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Select Airbag Parts The user is allowed to select all parts that constitute the airbag and all meshes contained in these parts will be compressed Please Note The airbag model to be folded must be parallel to XOY plane in the global coordinate system 3 2 6 3 Position Airbag This function is used to facilitate the user to position the airbag and two methods for positioning the ai
73. ction is changed Displayed Part Only Toggle on this option only calculate the CG for the parts displayed on the screen Otherwise the program will calculate the CG for all the parts Recalculate CG Toggle on this option to display the CG position of the current model Ground This option simulates the ground Auto Ground Toggle on this option to create the ground automatically Interface friction FRIC Define the friction factor between the model and the ground and the default value is 0 Stiffness scaling factor RWKSF Define the stiffness factor of the ground and the default value is 1 00 Define User Ground Part s If the ground model has been created in the current database this button can be used to select parts that constitute the ground instead of the Auto Ground option Tab2 Parameters Inventium PreSys 2012 R3 P Chapter 4 DTM Module Drop Test Drop Parameters Card A Drop Height mm From Ground to C The Center of Gravity CG The Lowest Node Specified Node Select a Nade 0 Gravity Value 9810 000 mms 2 simulation Starts From Drop Height C Specified Height ge mm Referred by the Lowest Node Termination Time Step Termination Time Factor End Time 25000 m s Steps in d3plot 20 Steps in time history 200 Close Parameters DTM provides two modes for drop test CHINA GB T 2423 8 and User Define CHINA GB T 2423 8 I
74. d parameters The road parameters can be classified into two types 1 Road feature parameters include feature height feature width feature angle and feature interval 2 Road global parameters include feature interval road length and road width Create Parametric Road Type Create Plank Road l Mode Fixed Moving Parameters Plank Lenath 200 0 Plank Height 20 0 J Road Feature Plank Bevel Length 10 0 E Parameters Plank Interval 600 0 E Road Global Road Lenath 9000 0 a i arameters Road Width 4000 0 E aww J close gt Transform and Delete The parametric road created by the user can be transformed or deleted through the component operations under the Structure module Please refer to Section 9 1 4 Transform Component and Section 9 1 5 Delete Component for detailed operations Create the Poly Line Road t will take the 2D curve plotted by the user as the road section feature with Poly Line Road The creation processes are as follows 1 Select Poly Line Road from the Type dropdown menu and the task panel is illustrated in the following figure 56 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Create Parametric Road Type Create Poly line Road B Mode Fixed 6 Moving Parameters Fi Ploy Line Points No x Fu J 0 0 000000 0 000000 1 10 000000 20 000000 2 20 000000 0 000000 3 30 000000 20 000000 4 40 000000 0 000000 5 50 000000 20 000000 6 60 000000
75. e Job Memory 512 0000 MB NCPU 2 o E Launch solver after output file Output File Close Solver Enter the path for the solver Output File Set the path for the output files Memory Enter the desired memory with MB Unit NCPU Enter the CPU number Launch solver after output file When this option is toggled on the output files for pressure test can be automatically submitted Output File Output the pressure test files set by the user 169 Inventium PreSys 2012 R3 p Chapter 5 ALE FSI Chapter 5 Blast Analysis ALE FSI The Blast Ale F SI vertical application toolset is focused on providing modeling tools for Arbitrary Lagrangian Eulerian Fluid Structure Interaction models These are LS DYNA based model which allow the user to define a fluid interaction wth a separate structure With the powerful fluid and solid coupling function LS DYNA can be widely used in the applications relating to blasts and impacts such as underwater blast underground explosion the impact or damage to the vessel structure caused by explosion detonation forming explosive separation analysis on design optimization for explosion vessels analysis on the structural damage to facilities like buildings caused by explosion design analysis of energy focusing for shaped charge and design analysis of warhead structure Inventium ALE FSI module enables the user to use LS DYNA for fluid solid coupling analysis conveniently With the mod
76. e Select Part window as illustrated in the following figure The user can select the parts and then click the Close button and all entities included in the selected parts will be selected Select Part 0 Ea By Cursor San Trace By List By Other Methods Selection Options Exclude Reject lt By Part Set lt enables the user to select the part by selecting the part set and then select the entities included in the selected parts When this option is selected it will pop up the Select Part Set option as illustrated in the following figure The user can select one part set from the part set list and then click the Close button and all entities included in the selected part set will be selected Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions Select Part Set 1 By Cursor 2 PO g W Trace By List ID Name Keywar 1 1 Pi mn F By Other Methods All Displayed Selection Options Exclude Rejet Reset OK Cancel 4 Selection Options Exclude When activated this unselects the subsequent selected entities Save Retrieve Click the Save button to save the selected entities and the selected entities can be selected directly by clicking retrieve in other task Reject Cancels the entity in the last selection Please Note This operation can be performed by right clicking the mouse bution Reset Unselects all selected entities 2 2 Select Node Window The Sel
77. e component includes various road tire and suspension models provided in the VPG Structure The Translate and Rotate functions under Transform Component facilitate the user to adjust the position of each component There are two types of transforming the component Translate and Rotate gt Translate Transform Component Translate Direction Along X Axis Along Y Axis Along Z Axis N1i N2 Increment Apply Close 1 Select the translation direction e Along X Y Z Axis Translate along the X Y Z Axis of the defined global or local coordinate system 1 Click the Select CS Global button to set the local coordinate system and the global coordinate system is the default 2 Enter the value for the distance in the Distance input box 3 If the Reverse Direction option is toggled on it will translate along the negative direction of the selected coordinate system e N1 gt N2 N1i Ne2 Increment Reverse Direction Select 2Nodes 0 68 Inventium PreSys 2012 R3 p Chapter 3 Virtual Proving Ground 1 Select two nodes and the translation direction is the vector direction from N1 to N2 and the distance is the magnitude of this vector by default 2 The translation distance can be modified manually 3 If the Reverse Direction option is toggled on it will translate along the direction from N2 to N1 e increment The translation is performed by entering the increment in the X
78. e corresponding option For example if the user needs to modify the calculation time double click CONTROL_TERMINAT ION to pop up the Keyword Editor for setting calculation time as illustrated in the following figure p Keyword Editor CONTROL_TERMINATION ENDTIM ENDCYC DTMIN ENDENG ENDMAS s ID Title 0 001002 0 0 0 0 1 COMMENT New Delete Description of Fields After the user has modified the calculation time click the Save button on the right side of the Keyword Editor to save the settings Then click the Close button to return to the Card tab Please Note When the regulation is set the X direction is default as the front direction of the vehicle and X value of center coordinate for the vehicle front wheel is 0 The user is allowed to change the default settings through Tools gt Option Center gt Safety gt Regulation gt Vehicle as illustrated in the following figure Option Center Category Value Directory Name AO General Front Orientation ES View X Value of Front Axle Background Foreground 9 Display Settings z Reference Plane Settings 2 J Shortcut Key ie Motion Mode H I ImportExport H B GeomModeling H P Preprocess H A Postprocess J Safety PF Regulation HPQ FSI 4 l T i i m Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground 3 2 4 2Regulation Window The Regulation Window can be used to move delete disp
79. ect Element s 0 gt I Close Main Control Cards Control Contact Define the contact control Control Shell Define the control for the shell element Control Hourglass Add the control for hourglass Control Time step Set the time step as 1 microsecond Time History Files D3PLOT Output the binary file NODOUT Output the node data including the node deformation velocity and acceleration ELOUT Output the element data including the element stress and strain GLSTAT Total energy message of the model such as kinetic energy potential energy hourglasses energy and discrete energy M ATSUM Material absorption capability It outputs of the information related to material such as the kinetic energy and internal energy RCFORC Output the resultant interfacial force 168 Inventium PreSys 2012 R3 P Chapter 4 DTM Module SELOUT Sliding surface energy It outputs the contact energy for master and slave surfaces and friction energy Nodes Select the nodes needed for output After defining the node the displacement velocity acceleration rotation displacement rotation velocity and rotation acceleration of these nodes will be achieved from the post processing Elements Select the elements needed for the output Different forms of force can be got for element types Tab4 Job shock Test Punch Parameters Card 400 ke Solver E Output File E singl
80. ect Node window is illustrated in the following figure including the commonly used selection modes such as Pick Box and so on Please refer to Section 2 7 1 for detailed description about these selection modes Only the selection modes marked in the following figure are introduced in this section 29 Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions Selection Options E Exclude Consider Feature Lin y Part Angle gt 20 0 By Group Reject Reset Close 1 Along Edge Select the boundary nodes E This option can be used in conjunction with the Stop Angle It allows the user to select those nodes on the edge that has the smaller angle with the selected boundary than the stop angle The following figures illustrate the plate models constituted by the shell elements gt The stop angle in the left figure is set to 91 When one of the boundary nodes is selected all the boundary nodes connecting to it will be selected gt The stop angle in the right figure is set to 89 When one of the nodes on the side edge is selected only the nodes on the same boundary will be selected Stop Angle more than 90 op Angle less than 90 E When Along Edge is selected the Consider Feature Line option will be activated When Consider Feature Line is toggled on the node on the feature line will be selected The following two figures illustrate the settings of selection window and selection
81. ector and it can be modified by the user 3 Increment Select the local global coordinate system and the moving direction and moving distance are decided by the vector 0 0 0 gt X Y Z in this local global coordinate system 4 Reverse Direction No matter it is in any way it will translate the impact point along the opposite direction of the user defined direction when this option is toggled on gt Delete Impact Point 1 Click the Delete button to display the Delete Impact Point task panel Delete Impactor Apply Close 126 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground 2 The Select Impact Points button will be activated and the user can select the impact points as needed 3 Click the Apply button to finish the deletion of the impact point 3 Impactor The impactor model includes Child Adult Headform Legform and Upper Legform The operation for the impactor can import the impactor model in the current file correctly and export the analysis model impactor d VPG External Child f Adult f Operation On Off Transform Export Delete Apply Close gt Select the Impactor VPG The impactor models of ETA are used by default and these impactors have high stability and accuracy External Theimpactor models of other company are used Click the Folder icon and the user is allowed to select the path of the impactor model
82. elete All Seatbelts When this option is selected it will delete all seatbelts in the current model when clicking the Apply button Include Related Slipring A complete set of seatbelt model includes the seatbelt ribbon Slipring and Retractor If this option is selected all parts associated with the seatbelt ribbon will be deleted when deleting the seatbelt Otherwise only the seatbelt ribbon will be deleted Apply Deletes the seatbelt Close Exits the task panel 3 2 4 Crash Regulation The crash regulation is the basis of the vehicle safety analysis and there are specific requirement for vehicle velocity crash barrier and dummy and so on this function realizes the automatic regulation definition The user can finish the whole definition for crash regulation with a few operations 101 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground There are the following advantages in setting the test condition wth Crash Regulation gt Process is clear and the operations are easy and convenient which saving plenty of time for users modeling gt The program provides abundant testing barriers and dummy libraries facilitating the user to achieve accurate results gt Regulation Window is provided for the user to define and manage multiple regulations ona vehicle for testing and export them separately gt The user can move or delete the test device in the Regulation Window after setting test conditio
83. entium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Create Dummy H Point 0 0 0 0 0 0 _ Assembly amp v E Dummy 1 El Torso Co E Thorax Yoke Right Upper Arm Right Yoke Left Upper Arm Lett Upper Leg Right Lower Leg Right Upper Leg Left Lower Leg Left gt Click the Context menu to select the assembly to be created such as Yoke Right gt Right click Yoke Right to display the submenu again This submenu contains the assembly for the next level that is connected with Yoke Right as illustrated in the following figure Assembly B F E Dummy 1 jor Upper Arm Right Delete gt Click the Context menu to select Upper Arm Right gt Right click Upper Arm Right and select Lower Arm Right in the popped menu gt Right click Lower Arm Right and select Hand Right in the popped menu 81 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Assembly l lv EHTorso oy E Yoke Right fo E E UpperArmRight jg E gt Repeat the above steps to create a complete dummy directory a typical dummy tree is illustrated in the following figure Create Dummy H Point 0 0 0 0 0 0 _ Assembly a i v _ E Du mmy 1 5 Torso o E Yoke Right 1 Et Upper Arm Right Ol rl EfLowerArmRight i E Hand Right jo E Yoke Left 0 rl Upper Arm Lefi
84. eps below 1 Right click Torso and select Upper Leg Left in the displayed context menu and then create the Upper Leg Left assembly 85 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Modify Dummy Modify Dummy Current dummt_2 Current dummt_2 H Point 0 0 0 0 0 0 H Point 0 0 0 0 0 0 dummt_2 Oe dummt_2 By joj E Torso 46 to E Thorax lsa E Yoke Right l45 6 Yoke Right 7 E Et Upper Arm Right 7 7 E 3 enor kcal aial LowerArmRight 5 g Upper Arm Right 6 a aes a fi m pea EEL 5 E Hand Right 3 5 E Yoke Lett 4 E Et Yoke Left 44 4 E amp Upper Arm Left a E Upper Arm Left le 3 l l Upper Leg Right 2 E E 4 2 E Lower Leg Right Paja i ERERSAER 2al aal E 42 F l Upper Leg Right 43 42 E Upper Leg Left 43 E Lower Leg Right 41 23 E Binet ee th 44 E Foot Right g 44 E a Upper Leg Left 0 0 F 2 Click the part set button followed by Upper Leg Left to display the Keyword Selection dialog Select the corresponding part set to Upper Leg Left and then click the Accept button to return to the Modify Dummy Task Panel 7 per p Keyword Selection SET_PART_LIST_TITLE OPTIONS LIST OPTIONS TITLE Wile Tithe a CARD2_COLUMN 1 CARD2_LIST_GENERATE 1 6 UPPERARMLEF _ 7 UPPER ARM RIC Feld s8 FOOTLEFT
85. er 4 Drop Test Drop Parameters Drop Direction 2 Select Axis SGN Cech B O CG to ND1 ND1 to ND2 Select Nodefs 0 Update Model Orientation Rotate Model x 180 180 0 00 om Degree Rotate model Center of Gravity CG Always Calculate CG V Displayed Part Onl Recalculate CG Ground MW Auto Ground Interface friction FRIC 0 00 E Stifness scaling factor RWKSF 1 00 B Define User Ground Pari s 0 i Drop Direction The default drop direction is along Z axis and it provides many ways of defining the drop direction of the model After the user selects the drop direction click the Update Model ram will rotate the model so as for the user defined drop direction Orientation and the prog pointing to the Z axis of the global coordinate Select Axis Define the drop direction of the model through the coordinate axis and there are six options for selection from the dropdown menu X to Drop Direction X to Drop Direction Y to Drop Direction Y to Drop Direction Z to Drop Direction CG to Impact Node Define the drop direction as center of gravity pointing to the Impact Node 152 Define the drop direction along X Axis Define the drop direction along X Axis Define the drop direction along Y Axis Define the drop direction along Y Axis Define the drop direction along Z Axis Inventium PreSys 2012 R3 DTM Module P Chapter 4 DTM Module 153
86. ete the created Punch Tab2 Parameters Vibration Test Parameters Motion Translati 7 Translation 6 VID Transl 5 X Rotation S Y Rotation Rotation ViD Rotatio VAD 6 Velocity Acceleration Displacement Velocity vs Disp 6 Relative Displacement Domain PSD Frequency Domain Time Curve for Motion n a Select Curve 0 Termination Time Step Termination Time Factor End Time 1 0000 0 5000 s Steps in d3plot 20 Steps in time history 200 Inventium PreSys 2012 R3 dl P Chapter 4 DTM Module DOF The user can select the motion mode as translating or rotating along X Y and Z as needed VAD Select the motion conditions such as Velocity Acceleration and Displacement PSD Frequency Domain Set the input vibration curve as data in frequency domain Time Domain Set the input vibration curve as data in time domain End Time Vibration end time This parameter can be modified as required Factor This factor is used for the user to scale the time length of the simulation Termination Time This value equals to the product of Factor and End Time Steps in d3plot The numbers of D3plot outputted during simulation Steps in time history The numbers of node or element information outputted during simulation Tab3 Card Control Shell W Control Hourglass W Control Time
87. evice about this vector e Reverse Direction The test device is rotated in the opposite direction of the defined direction 2 Delete Right click the test device on the Regulation Window to pop up the Move and Delete menu Click the Delete menu to delete the current device as illustrated in the following figure Regulation Info Regulation Fl J FMvss214 Component ETASI Transform E Keyword C Delete D SETTART E INITIAL_VELOC l CONTACT DEFINE BOX m i TRT hiru N rmi J mm JO OD rere lt IFA A lt lt 3 Display There is a display box behind each of the test device or test condition on the Regulation window as illustrated in the following figure 114 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Regulation 4 Regulation Info E Regulation Elf FMVSs214 Eb Component is Barrier ETASID Be Keyword SET_PART INITIAL VELOC CONTACT DEFINE_BOX x HKA RKK k s RIGIDWALL_PL SET_PART E SET_PART E CONTACT lf FMVSS216 Component lt JOOKOOOOLIN r lt EIEIEI ES EE Keyword BOUNDARY_P E CONTACT i i fi n HAKAK This display box is used to control the display of the test device or test condition in the display area When toggled on the corresponding item will be displayed in the display area Otherwise the corresponding item will be turned off As illustrated in the above figure two regulations F
88. f Setup to create the mesh It enables the user to set the contour dimension and mesh size of the explosive source and medium Task Panel Options 171 Inventium PreSys 2012 R3 P Chapter 5 ALE FSI Model Orientation axis shape fone Explosive Quarter Cube Cube ALE FSI A Mine Center Below XY P B Explosive Dimension Length Height W Zone Length Height fone 1 Length Height W Transition Region Element Size 20 0 100 0 200 0 600 0 600 0 Width 100 0 Distance 0 0 Width 600 0 Material Soil Width 600 0 Material Soil Model Define the model Click the dropdown menu on the right side of Model to select Whole Half or Quarter Please Note For Half or Quarter when the user sets the explosive source or Zone 1 or Zone 2 the dimension for the whole model should be set and the program will automatically generate Half or Quarter model Orientation Define the height direction of the model The defaulted direction is X axis and the user can select Y or Z axis as needed Shape Define the shapes of the explosive zone and explosive source The user needs to enter different parameters to define its shape dimension gt Zone The defaulted shape for Zone is Cube and the user can set it to Cylinder gt Explosive The defaulted shape for Explosive is Cube and the user can set it to Sphere and Cylinder 172 Inventium PreSys 2012 R3 P Ch
89. f this option is selected the default values for all parameters are those specified in CHINA GB T 2423 8 The user can also select User Define User Define This option allows the user to define all parameters Drop Height DIM module provides three ways which enables the user to select the proper way of defining the drop height according to different needs The Center of Gravity CG Define the drop height measured from Ground to the center of Gravity The Lowest Node Define the drop height measured from Ground to the lowest node of model Specified Node Define the drop height measured from Ground to the specified node of model Gravity Define the gravity acceleration the default value is 9810 mm s2 154 Inventium PreSys 2012 R3 P Chapter 4 DTM Module 155 Value The user can enter the value in the edit box as needed paying attention to the selected unit system Simulation Starts From Drop Height Defines the simulation height as the drop height and it simulates the whole drop process Specified Height It simulates the process from the user defined height and the height value entered by the user is the distance from the lowest node of model to Ground Note that this value should be less than or equal to the drop height Termination Time step Drop Height DTM module provides three ways which enables the user to select the proper way of defining the drop height according to different needs End T
90. g UPPER LEG LEFT 9 FOOTRIGHT SID DA1 DA2 DA3 DA4 10 OMEN LECtA 11 LOWER LEG RIC 12 0 o o 0 _ 12 UPPER LEG LEF 43 I IDDCD I CA DIF z 4 mW j eer COMMENT l 3 Click the stop angle button followed by Upper Leg Left to display the Keyword Selection dialog Select the corresponding stiffness for Upper Leg Left and then click the Accept button to return to the Modify Dummy Task Panel 86 Inventium PreSys 2012 R3 i P Chapter 3 p Keyword Selection CONSTRAINED_JOINT_STIFFNESS_GENERALIZED OPTIONS GENERALIZED JD DLCIDPS 17 FMPS 55000 PSAPS 50 Virtual Proving Ground as wl D Title ie TE 2 lt E 5 6 q 7 8 E i 4 1i j i Save JSID PIDA PIDB CIDA CIDB 9 38 40 18 17 LCIDPH LCIDT LCIDPS DLCIDPH DLCIDT 14 14 15 17 17 ESPH FMPH EST FMT ESPS 5e 006 55000 5e 006 55000 5e 006 NSAPH PSAPH NSAT PSAT NSAPS 50 50 50 50 50 COMMENT Double click to set JOINT ID to default value a 4 Right click Upper Leg Left and select Lower Leg Left in the displayed context menu and then create Lower Leg Left as illustrated in the following figure PRR RRP RRR RRR eee Modify Dummy Current dummt_2 H Point 250 247 250 93 279 264 Modify Dummy Current dummt_2 H Point 250 241 250 93 279 264 z dummt 2 a asia fas o E amp Yoke Right iia aial E UpperArmRigt 7 z E _
91. g the impact The user is allowed to activate the locked state of the retractor by defining the retractor when performing the finite element modeling with PreSys Inventium PreSys 2012 R3 97 P Chapter 3 Virtual Proving Ground Seatbelt Generate Element Aligned Belt Num Coincident Belt Num 10 Select Retractor Node 0 Sensor Select Sensori 0 Select Sensor 0 select Sensors 0 select Sensor 0 Parameter Time Delay 0 0 Pull Length 0 0 o FedLength 0 0 Select Curve for Loading 0 select Curve for Unloading 0 Apply Close Aligned Belt Num The aligned belt refers to the seatbelt elements between the dummy shoulder slipring and the retractor as illustrated in the following figure The user can define the seatbelt number and the default is 4 Coincident Belt Num The coincident elements refer to the seatbelt elements within the retractor these elements are in the interior of the retractor at the beginning and these nodes constituting these elements are consistent wth each other The retractor can be pulled out before it is locked and there exists no resistance during the pull out The user can define number for these elements and the default is 10 Select Slipring Node It refers to the node in the dummy shoulder 1D seatbelt connecting with the beam element and the user can define the slipring on this position as illustrated in the following figure Select Retractor Node The user ca
92. ginal State Previous Step ee Return to Final State Fold Step i cee _ 4a _ j i gt pi a Create Delete Play Loop Playback Switch Frame Numbers played by Every Folding Procedure 2 Fold Type The program provides seven fold types as illustrated in the following table Please Note Only one fold type can be selected for each fold step It does not fold for the Null 140 Inventium PreSys 2012 R3 eo m Chapter 3 Virtual Proving Ground Fold type and other six fold types are illustrated in the following table Tuck Fold _ Spiral Fold Thin Fold Thick Fold E 7 hl 3 Fold Direction The user is allowed to fold the airbag up or down along the W Axis in the local coordinate system Up means to fold along the positive direction of W Axis and Down means to fold along the negative direction of W Axis Up CO Y Fold along W Axis in the local coordinate system Down Z gt Fold along W Axis in the local coordinate system 4 Fold Side The program will select and highlight the nodes to be moved according to the fold side and fold line after the user has selected the fold point The fold side is judged based on the U Axis in the local coordinate system Left Taking the fold line as the boundary it will select and highlight all nodes on the U Axis side 141 Inventium PreSys 2012 R3 2 P Chapter 3 Virtual Proving Ground in the coordinate system Right Taking the fold line as
93. ht click to restore it to 0 and then left click this button to reset it 6 After the modification is finished click the Apply to save the modification Then exit the task panel After the dummy modification is finished the user can export and save the dummy model via File gt Export option 3 2 2 Seat Cushion Deformation seat Cushion Deformation Select Foam Seat 0 Gap 3 0 This function is mainly used to simulate the seat sinkage when the driver sits on the seat The seat mesh usually solid element in the simulation and the seat sinkage is not considered This function will simulate the sinkage situation of the seat according to the contact between the 88 Inventium PreSys 2012 R3 pP Chapter 3 Virtual Proving Ground 89 dummy and the seat The user only needs to select the seat and one or more parts in the dummy on the task panel Then click Apply button the program will automatically calculation the seat sinkage Select Dummy Parts Select one or more parts on the dummy that is contacted with the seat The dummy should thrust into the seat before the sinkage operation Select Foam Seat Select the part to be sunken on the seat and this part should be solid element Gap The distance between the seat and the dummy after the seat sinkage The gap is set by the user with 3 0 as the default Apply Perform the sinkage operation and the user is allowed to use the middle mouse button instead of clicking the App
94. ieved with the tire module of ETA and it focuses on the mechanical property of the tire in modeling which makes it accurate to transfer the force and displacement between the tire road contact to the chassis suspension system and body The tire model provided by VPG has the following advantages gt The tire model is simple in structure saving the time cost of the analysis 58 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground gt it can accurately reflect the interaction between the tire and the 3D road gt The simulations for the horizontal and longitudinal force of the automobile suspension are quite accurate 3 1 2 1Create Tire This function is used to create the parametric tire Click Apply gt Structure gt Tire gt Create Tire in turn to display the task panel illustrated in the following figure Create Tire Type VPG Tire Parameters Section Width mm 195 r Aspect Ratio 9 65 Rim Diameter inch 15 l Rim Width inch 6 5 o No of Radial Elements 32 7 Null Shell Mass Unit Kg Lb Value 225 Pressure Unit Mpa Psi Value 0 248 Tire Center SelectCoordinate 0 o 1 The user needs to select the tire type from the Type option and three types of tires are supported for the user to create 1 VPG Tire The structure of VPG tire is illustrated as follows e The tire tread and chafer use 8 node solid element and Mooney Revlion rubber material The material par
95. ime The time needed from the simulation height to the ground There is no need for the user to input the value and the program will automatically calculate this value according to the Drop Height Simulation Height and Gravity Factor This factor is used for the user to scale the time length of the simulation This value can be set more than 1 accordingly if it is needed for the user to simulate the conditions a period after dropping Termination Time This value equals to the product of Factor and End Time Steps in d3plot The numbers of D3plot outputted during simulation Steps in time history The numbers of node or element information outputted during simulation Tab3 Card Inventium PreSys 2012 R3 P Chapter 4 DTM Module Drop Test Drop Parameters Card Main Control Cards Control Contact Control Shell fell W Control Hourglass W Control Timestep Time History Files D3PLOT E NODOUT E ELOUT GLSTAT E MATSUM F RCFORC E SLEOUT History Nodes Elements Select Nodes 0 select Elements 0 Close Main Control Cards Toggle on the options to define the corresponding control cards Time History Files D3PLOT Output the binary file NODOUT Output the node data including the node deformation velocity and acceleration ELOUT Output the element data including the element stress and strain GLSTAT Total energy message of the model such as kinetic energy potential
96. in the main menu and set the export file name as FMVSS214 gt Set the Range as Customize in the popped Export Management window as illustrated in the following figure Export Range E All Displayed Include File Preserve Merge Export Keyword s Default Value Yes No Unit Settings Unit MM S TONNE l Length MM e Angle Rao Time S TEMP K Mass TONNE Mole moL x gt Click the OK button in the Export Management window to export the file 117 Inventium PreSys 2012 R3 e P Chapter 3 Virtual Proving Ground 3 2 5 Pedestrian Protection The Pedestrian Protection function facilitates the user to implement the following operations 1 Mark the impact zone 2 Create the impact point 3 Load the impactor 4 Export the impact analysis file 5 Submit the calculation in batch 6 Analyze the operation result The user can access this function through Safety gt Pedesirian Protection from the Application dropdown menu Application Tools Window Help ey 6 Ae DIM d E o Structure seat Cushion Deformation seatbelt d Crash Regulation Pedestrian Protection Model Car Positioning The model car needs to be positioned before the pedestrian protection setting according to the following requirements as illustrated in the following figure 1 The heading direction of the car is the X direction in the global coordinate system 2 The longitudinal symmetry plane of the car
97. ing run time and time step as well as exporting dyn file please refer to Inventium Manual for detailed description Inventium PreSys 2012 R3 More abot Support More about Support Users who have valid licenses and who have met the licensing criteria may receive support from both the authors of the PreSys software or the distributors of the software Support activity includes aiding the user in understanding the operation of the software providing examples of use of the software in typical applications correcting or further explaining any topic included in this manual or other PreSys Tutorials lf the user needs a higher level of support such as debugging models providing consultation services and engineering support they may contact ETA or their software distributor for a proposal 181 Inventium PreSys 2012 R3
98. ion region gt Absolute The value in the box signifies the absolute length width and height of the transition region gt Relative The value in the box signifies the relative length width and height of the transition region gt TR1 TRn Dimensions of transition regions TRn indicates the last transition region and its dimension is the contour dimension of the explosive zone which cannot be set by the user lf the No of Regions is set to 2 TR2 is the contour dimension of the explosive zone and the relative value and absolute value for the height of T R2 are illustrated in the following figure Inventium PreSys 2012 R3 175 p Chapter 5 ALE FSI ae i F T Element Size This option controls the mesh size of the explosive source OK Click this button to generate ALE mesh and exit the ALE FIS task Apply Click this button to generate ALE mesh and don t exit the ALE FIS task The mesh material property element property as well as state equation of the explosive source and media are created Close Click this button to exit the ALE FIS task 5 3 Define ALE Property In the previous section the program has automatically defined the material property and element property of the explosive source and the medium In this section the user is allowed to create new material property and element property of the explosive source and the medium ALE FSI Setup Define Cards WPTrrr rrr irr rier rir rrr
99. irtual Proving Ground Toggle on Lower Tread Groove Toggle off Lower Tread Groove 8 Set the Material Type When the Composite Tire is created the rigid material is used for the rim and all other materials are set by the user The parts that use the Solid Material include the tire tread chafer and lower tread groove and parts that use the Shell Material include the Inner tread sidewall and rim flange 3 1 2 2Cleat Test The Cleat Test function is used to analyze the endurance and high speed performances of the tire The task panel is illustrated in the following figure Tire Cleat Test Cleat Number 2 Cleat Width 10 0 Cleat Height 10 0 Drum Diameter 2000 0 Drum Velocity 13 899 Tire Cleat Clearance 2 0 Apply Several parameters need to be set in the Cleat Test gt Cleat Parameters The cleat is the rectangular bumping on the drum and its placement direction is perpendicular to the rolling direction of the tire as illustrated in the following figure The user is allowed to set the cleat number cleat width and cleat height Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground gt Drum Parameters The drum is simulated wi
100. is surface by topological mesh or triangular mesh 2 Front 37 lf the user selects by Pick Box Polygon Circle or Freehand when activated this forces the only selection to the element which is positioned closest to the observer when multiple ele ments are at the same cursor position lt Figure 1 illustrates the elements on the cube selected by the user by Pick lt When the Front option is toggled on only the lateral solid elements closest to the user are selected as illustrated in Figure 2 lt When the Front option is toggled off all elements inside the cube in the select box are selected as illustrated in Figure 3 Figure 1 Frame Selected Elements Inventium PreSys 2012 R3 38 P Chapter 2 PreSys Instructions Figure 2 Front is activated Figure 3 Front is toggled off 3 Spread When toggled on all elements with normal included angle to the selected element smaller than the Spread are selected This option can be activated only in Pick lt When the Spread option is toggled off only one picked element is selected as illustrated in Figure 1 lt When the Spread is setto 19 only the elements that are on the same plane with the picked element are selected as illustrated in Figure 2 lt When the Spread is set to 20 all elements between which normal included angle and the picked element smaller than 20 will be selected as illustrated in Figure 3 Figure 1 Spread is toggled off degree
101. ium PreSys 2012 R3 Virtual Proving Ground B Pah P Chapter 3 Section Width Aspect Ratio Section Height Section Width LIET uomaa S Rim Diameter Unit inch Rim Width Unit inch Inventium PreSys 2012 R3 61 cou pP Chapter 3 Virtual Proving Ground Upper Tread Height Upper Tread Height Unit mm Only Used for Composite Tire Lower Tread Height Lower Tread Heiohi Unit mm Only Used for Composite Tire Bead Ratio 0 5 Rim Width Chafter Width 0 5 Rim Width Only Used for Composite Tire 3 Set the No of Radial Elements It is the element number distributed on the tread circumference 4 Null Shell When this option is toggled on a layer of shell element will be automatically created on the solid element surface of the tread facilitating the user to create the contact It will effectively avoid the negative volume during the solving calculation when it is to create the contact with the null shell element 5 Set the Inner Tread Type Shell or TShell 62 Inventium PreSys 2012 R3 63 P 6 Chapter 3 Virtual Proving Ground Set the values for the tire mass and inflation pressure The Mass and Pressure can be set under two units The user is allowed to enter the values for the tire mass and pressure gt Select the tire center After the user selects the coordinate point the program will generate the tire with this position as its center If the user se
102. lay and export the defined test device and test condition This window can be turn on off by clicking Window gt Regulation Window The use could translate delete or turn on off the test device in the Regulation window when he is setting the test conditions of some regulation The following figure is the Regulation window Regulation Regulation Info E Regulation A J FMvss214 Component is Barrier ETA SID Ey Keyword SET_PART E INITIAL_VELOC l CONTACT DEFINE_BOX RIGIDWALL_PL SET_PART SET_PART E CONTACT El Py FMVSS216 Component maA ANNA AARAA Keyword l BOUNDARY P l CONTACT Ld OOUBIEE 1 Move The test devices defined in Crash Regulation will be displayed on the Regulation Window such as MDB and dummy and so on Right click the test device to pop up the Move and Delete menu as illustrated in the following figure 112 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Regulation Info E Regulation Fl J FMvss214 Component H ETASI Keyword Delete _ B sEtrrrera A A A AKA lt lt ES eE INITIAL_VELOC E E CONTACT F DEFINE_BOX F Click the Move menu to pop up the window as illustrated in the following figure Transform Component Transform Component E Translate Rotate Direction Direction Along X Axis Along Y Axis O Round Axis Along Z Axis Round Z Axis Ni N2 Round N1 N2
103. lects multiple positions the program will generate multiple identical tires gt After the Apply button is clicked the program will automatically generate the tires according to the numbers of tire center position set by the user The material parameters of the generated VPG tire have been verified repeatedly and can be directly used in various simulation analyses The following figure illustrates each part of the generated VPG tire and the corresponding material parameters Lower Tread LOO Upper Tread Solid AAE Mooney Rivlin Rubber Mooney Rivlin Rubber NS A y mages Ro 1 0E 9 Do AAA Ro 2 04E 9 PR 499 PR 499 tet LE 1 B 9853 A 5 541E 1 B 1 37E 1 InnerTread Elastic Sidewall Ro 1 11E 9 PR 497 Chafer E Elastic E 54E 3 Mooney Rivlin Rubber T a Sj Ro 1 17E 9 Ro 84E 9 Ta PR 333 PR 499 A AN E 2 401E 1 A 5 541E 1 B 1 37E 1 SAHIN Rim Rim Flange Rigid Material Elastic Ro 8E 9 Ro 8E 9 PR 28 PR 28 E 27 0 E 5 E 0 E 5 lf the user wants to create the Composite Tire the following options also need to be set Lower Tread Groove When this option is toggled on it wil automatically create the solid element at the lower tread groove As are illustrated in the following two figures the left tire illustrates the creation of the solid element at the lower tread groove and the left figure illustrates the conditions when this option is toggled off Inventium PreSys 2012 R3 64 p Chapter 3 V
104. lt 94 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground 95 Begin 1D Length End 1D length The total length for 1D seatbelt element and beam element at the start and end locations in the created seatbelt Create Beam at Begin When connecting the seatbelt to the B pillar or seat the created beam element is connected with the 2D seatbelt elements and another end of the beam is connected to the B pillar or seat through the rigid connection But if the user needs to create Slipring between the upper seatbelt and lap belt this option should be toggled off and select the node on the upper seatbelt connecting with the beam as the start node when creating the lap belt Create Beam at End Create the beam element at the end location of the seatbelt so as to connect the seatbelt to the seat or automobile through the rigid connection Preview This function allows the user to preview the seatbelt outline before the seatbelt is generated as illustrated in the following figure If some nodes or parameter settings are not correct the use only needs to modify some parameters without reset it from the beginning Inventium PreSys 2012 R3 96 Chapter 3 Virtual Proving Ground yt Lh F T rA AA oer eT Lt eer Et a tf ry A 3 I F p Tab 2 Retractor This tab facilitates the user to create the seatbelt retractor The retractor will be locked to control the passengers deceleration for protection durin
105. ly button Close Closes the task panel As is illustrated in the following figures the Figures 1 and 2 illustrate the original state the seat has smooth surface the Figure 3 illustrates the seat tendency to sink after the dummy sits on the seat and the Figure 4shows the seat after deformation Figure 1 Original State Dummy and Seat Figure 2 Initial State Seat Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Figure 3 Seat Deformation Figure 4 Seat after Deformation 90 Inventium PreSys 2012 R3 e P Chapter 3 Virtual Proving Ground 3 2 0 Seatbelt 91 Presently the seatbelt has become the essential security measure in vehicle driving and it plays an important role in protecting drivers and passengers The seatbelt simulation is also an indispensable step during the vehicle crash safety simulation The user is allowed to create the seatbelt model conveniently through the Seatbelt menu of PreSys including the seatbelt ribbon Slipring Retractor and Sensor and so on lf the user has adjusted the dummy position after creating the seatbelt the user only needs to refit the seatbelt directly through the Refit Seatbelt function and there is no need for the user to create the seatbelt again The user can access to the seatbelt module from the Application menu 3 2 3 1Create Seatbelt There are three tabs in Seatbelt menu which facilitates the user to define the seatbelt model by defining each option
106. n select a node on the automotive B pillar and the program will automatically create the rigid element and retractor at this node and the rigid element connect the retractor to the B pillar Inventium PreSys 2012 R3 98 P Chapter 3 Virtual Proving Ground B pillar i af Spring Node Aligned Belt Elements Coincident Belt elements in retractor Retractor Node N Sensor The sensor is used to activate the retractor and the user must define at least one type of retractor The user can define the retractor in the popped keyword editor by clicking the Select Sensor button as illustrated in the following figure The retractor type is specified by the parameter SBSTYP which includes the following p Keyword Selection ELEMENT_SEATBELT_SENSOR SBSID SBSTYP SBSFL i ID Title 1 0 ivi 0 COMMENT 4 ACCELERATION OF NODE 2 RETRACTOR PULL OUT RATE 3 TIME 4 DISTANCE BETWEEN NODES Save SEATBELT SENSOR FLAG Acceleration Sensor If the node acceleration exceeds the given acceleration continuously for a period the retractor will be activated Velocity Sensor If the retractor pull out rate exceeds the given rate for given time the retractor will be activated Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Time Sensor The retractor will be activated when it exceeds the given time Distance Sensor When the distance between the two specified nodes
107. n the following 47 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Alternate Surface Body Twist Lane Cobblestone Track Pothole 1 Track Pothole 2 Surface ___ Pave Surface Ramp Surface Inventium Bo nventium PreSys 2012 R3 2012 R3 49 P Chapter 3 Virtual Proving Ground Ripple 1 Track Ripple 2 Track Washboard 1 Surface Washboard 2 Surface Users can also import their own road models through the user defined method as illustrated in the following figure Select User Define from the dropdown menu of Type and then click the folder icon Bering the file box to import the road models of their own Inventium PreSys 2012 R3 i pP Chapter 3 Virtual Proving Ground Import Road ie Type User Define x Mode Fixed Moving File ol 50 The road model imported through this user defined method will be identified as a road component therefore it can be repositioned or deleted directly through the Transform Component or Delete Component function provided by the structure module 2 Select the road mode Fixed The road is immovable Moving The road has its freedom in X direction Please Note The rigid material model of LSDYNA MAT_020 MAT_ RIGID is adopted for the road modeling After the road is imported the default settings for the fixed mode is CMO 1 CON1 7 CON2 7 and for the moving mode is CMO 1 CON1 5 CON2 7 If the freedom in other direction is wanted it can be
108. ne ieee an 101 32 5 PCS Si HIE Fe FIG muurari ce cyto emecear ae ees acisteeciem eam A 118 3 2 6 PAU ANG fares Beet iste E a a N abate E etme mbna teen tenets 139 Chapter DIM Moqdule sssssssuuuu000000000uu0uununnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 151 9S me 6 Oe Sh epee ere rts een ertr ren rr nent Tart ter rere rrr rerrer rrr tener emer eer e 151 A AMO SS UNS TES cata cera cesarean era ere aie eae tee eee ee ete 158 AS NIDMAUON MCS Ureia AR 161 AA SIO CIR TOS Traa N cay eeaedoner cee be deese eae 165 Chapter5 Blast AnalySiS ALE PS ssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 170 Syl MIM S pg eN Reema se mie ine S A Cena ena 170 5 2 Generate ALE Solid MES ou ececcssseecesseeeeesseeeessseeeeeseeessseeeeesseeeeesseteeesseeeesees 171 Oro STING ALE MODEM Y scssteassnccennvas ENEE E aas 175 DA DETINEALE GOMMOl C GUS sac cncsutetsiancee eagnssnsuichcanaiaossstuesebaaddceeaeeasacinanenaartads 178 31 6 OT Merce ere ner re ER N ee ene RR eee 180 MOTE about SUBD OME visssasiiasisdanashnacicvasbihntadenivantuandunsuansadanauneuannssenstoiandduenias 181 Inventium PreSys 2012 R3 p Chapter 1 Introduction Chapter 1 Introduction 1 1 Description ofthe Inventium Suite The Inventium Suite is an integrated set of software products which are intended for use by engineers and scientists in support of product development or research activities using finite element analysis suite Inventium gt Y
109. ne of the Postprocessing file click Postprocess gt Pedestrian Protection 134 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground in turn to open the Score function of the pedestrian protection There are four pages for the Pedestrian Protection function in Postprocess gt Headform It is used for the running result analysis for Headform It automatically calculates HIC15 and the score for each impact point and gives the total score of the Headform gt Legform It is used for the running result analysis for Legform It automatically calculates the acceleration displacement bending angle and score for each impact point and gives the total score of the Legform gt Upper Legform It is used for the running result analysis for Upper Legform It automatically calculates the moment force and score for each impact point and gives the total score of the Upper Legform gt All It is used for the running result analysis for All The user enters the Project Folder including the running results for Headform Legform and Upper Legform and the program will automatically analyze all running results and calculate the final scores of the model car and enter the results for the Headform Legform and Upper Legform on the corresponding task panel The operations for each task panel are similar The operational processes are illustrated with the figure in the following Headform task panel 135 Inventium PreSys 2012 R3
110. new property to the part Click this button to enter the interface of Select Property In the specified element property interface the user is allowed to Select an existing element property from the part list or the graphic area or Create a new element property by clicking By gt By New then the Select Part interface is popped up In this Select Part interface the user can select one or more parts in the part list or on screen Click the middle mouse button and the selected part will be endowed with the new element property If the selected part has been specified with an element type the program will remind the user whether to cover the existing element property Click YES to cover and click NO to reserve 177 Inventium PreSys 2012 R3 P Chapter 5 ALE FSI select Part 0 By Cursor AE Trace By List Name Filter Select Property 0 ID Name Color By Cursor 1 NECKRUB M E Trace Front J NECKSUP O a By List ID Name Color By Other Methods 1 50000001 m 50000002 K 3 Ssn000003 be b i Selection Options By Other Methods Exclude New By i OK OK Specify element property interface Select part interface 5 4 Define ALE Control Cards The keywords such as eos_ optional and constrained_lagrange_in_ solid are commonly used in ALE algorithm The ALE FSI module provides keyword option cards as illustrated in the following figure which enables the user to define some keywords 1
111. ns Presently the crash regulations supported by PreSys are listed as follows FMVSS 201 Head Impact 208 Frontal Impact 210 Seat Belt Anchorage 214 Side Impact 214 Side Door Impact 214 Side Pole Impact 216 Roof Crush 225 Child Restraint Anchorage 301 Rear Impact 581 Bumper Impact ECE Regulation 17 Luggage Intrusion 32 34 Rear Impact 66 Bus Rollover 94 40 Offset Front Impact 95 Side Impact Japan NACAP Frontal Impact Offset Front Impact Side Impact Other Regulations Ihs 40 ODB Ihs Side Impact Europ NACAP Pedestrain Impact This function can be accessed by clicking Application gt Safety gt Crash Regulation 3 2 4 1Regulation Setting Processes What follows in the passage illustrates the regulation setting processes in details by using 214 Side Impact of FMVSS 1 Select Regulation Type After entering the Crash Regulation task panel the user is allowed to select the impact type on the Regulation tab gt First select USA FM ASS from the Standard dropdown menu gt Second select Side Impact from the Case dropdown menu as illustrated in the following figure 102 Inventium PreSys 2012 R3 103 p Chapter 3 Virtual Proving Ground Crash Regulation Regulation Motor Vehicle Safety Standard Standard USAFMVSs Case 214 Side Impact Apply Close After the user has selected the impact type from the Case the schematic diagram for this regulation will be automatically displayed below
112. nstructions control if each function appears in the right click menu of the subdirectory By default each function is toggled on gt Customize Toolbars shortcut keys Menu Items Display O Menu H Main Menu e Pop up Menu In Model Tree El POP Element Node H Create Delete Transform Project Change Number qap Renumber Identify POP Geometry POP Reference Plane POP Reference Axis POP Material POP Property POP 6 0 5 POP Coordinate System EERIE EARS IE 2 The model tree facilitates the user to control the display for Part B C S Material and Property and so on Right click the header of the model information to pop up the items that need to be displayed on the model tree including Column Color Column Display Column Info and Other as illustrated in the following figure Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions E aE 1 MUM o aT aM 0 w ColumnDisplay H ATAA 0 Columninfo FLA 0 ce gapa 3 Pet nooo Column Color It displays and modifies the color of each entity Column Display It controls the ShowHide status of the corresponding entity Column Info It displays the corresponding entity information such as the information about the material and property of the PART Other It is used to adjust the location of each display column in the model tree through the Up
113. ntium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Z lf the user needs to create the lap belt it is suggested to select the point that has created on the upper seatbelt as the start end and toggle off the Create Beam at Begin option in the lower of the tab so as to create Slipring 93 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Begin Anchor Node of lap belt Select Orientation Node This node defines the seatbelt direction from the start node to the end node As for the upper seatbelt the user can select one node on the chest as the orientation node As for the lap belt the user can select one node in the lumbar region as the orientation node Select Reference Part Shell The use can select one or more shell parts The program will generate the seatbelt element based on the reference part according to the user defined offset clearance As for the upper seatbelt the user can define the shell part on the chest of the dummy as the reference part As for the lap belt the user can define the shell part on the waist and the topside shell part of the seat as the reference part Belt Width It is the 2D shell element width for the generated seatbelt illustrated in the following figure 1D element length at AN begin position ie r Belt width eam element at begin position Offset Clearance The clearance between reference part on the dummy and the generated 2D seatbe
114. ntium PreSys 2012 R3 e P Chapter 2 PreSys Instructions 2 4 User Interface Customization Many components of the User Interface user may easily adapted to a configuration preferred by the individual user 2 4 1 Moving Toolbars The user may move any toolbar from the docked location at the top of the PreSys window by using the mouse to drag and drop it anywhere on the screen The user should select the handle using the mouse and release the mouse button where they would like the toolbar to be located They may be docked at the edges of the Display Area or may float anywhere on the PreSys window or desktop An example of a floating toolbar is shown below f p Untitled 3 NASTRAN Inventium PreSys 2010 R3 l E File Edit View Preprocess Tools Window Help DARBAS A aa Aiea amp s A Ya ys SG g eS amp a Qi LALE x PP it J E y xf aff 84 x TIE NOAG z 9 MaAikNAZEI THE ESO Hat4OS Hai Export Management Model Untitled 3 Hx Model Info os Part Property 4 Coordinate System 0 Element 2366 Geometry 0 Reference Plane 3 Reference Axis 0 Material 2 B C S 1 Keyword 14 A a Set current group acm3 dat Set current group NULL k m t Command Patonin Ready 4SRBRK W Gobacs O 1xoy O 8 ColorbyPat MMSTONNE 2 4 2 Turning ON OFF Toolbars The user can add or remove individual toolb
115. ode by selecting the part set When this option is selected it will pop up the Select Part Set window as illustrated in the following figure The user can select one part set from the part set list and all nodes included in all parts of this part set will be selected The keyword corresponding to the Part Set is SET_ PART which can be created or modified by the user in the model tree Inventium PreSys 2012 R3 P Chapter 2 PreSys Instructions Select Part Set 1 By Cursor ID Name Keywo 4 1 E 2 LSTC HYB 1001 3 HAND LEFT 1002 4 HAND RIG 1003 5 LOWER A 1004 JL 4 TT I By Other Methods Selection Options Exclude Reset 2 7 3 Select Element Window 36 The Select Element window is illustrated in the following figure including the commonly used selection modes such as Pick Box and so on Please refer to Section 2 7 1 for detailed description about these selection modes Only the selection modes marked in the following figure are introduced in this section Inventium PreSys 2012 R3 1 P Chapter 2 PreSys Instructions Inside Region 2 C Attached By Other Methods oh Displayed Displayed Neighbor Neighbor selection Options Element Type By Material a y Group Exclude il 2 _ Part Set Reject Reset M Surface The user is allowed to select the surface by picking on the screen and to select the element generated by th
116. of PreSys Various solvers supported by PreSys can be executed on both local and or remote server systems PreSys is organized as a tree structure and is operated and controlled by the user friendly GUI It only introduces the usage habit and method of PreSys Please refer to PreSys User s Manual for detailed functions and introductions Inventium PreSys 2012 R3 e P Chapter 2 PreSys Instructions 2 1 Opening Creating a PreSys Database File To start the PreSys software the user must execute the PreSys program file using the method appropriate for their operating system In Windows this may be accomplished by double clicking the shortcut to the PreSys executable file Once the PreSys software is activated the PreSys Open File window is displayed for the user to OPEN a new PreSys database The user may also open an existing database mdl file by navigating through the folders and selecting the desired file or by selecting Open Recent from the File menu A list of recently opened model file will be displayed for selection gt Open File See the Open File window below The user may either select the name of a previously saved file or enter the name of a new file in the Dialogue window The extension mdl will automatically be added to a newly created file gt Open er yy Y di Local Disk E compare 4 Search compare Organize New folder E Recent Places Name Date modified Type re t model mdl 2011 11 14
117. of the X Y Z input box 3 The connector will translate along the vector 0 0 0 gt X Y Z in the local global coordinate system 4 Ifthe Reverse Direction option is toggled on it will translate along the vector X Y Z gt 0 0 0 Rotate 149 TURES Fee AIRBAG 3 7 Ni N2 Reloltean amnem K a 10 iE lt iq Round X Y Z Axis Rotate round the X Y Z Axis of the defined global or local coordinate system 1 Click the Select CS Global button to set the local coordinate system and the global coordinate system is the default 2 Enter the rotation angle in the Angle input box Inventium PreSys 2012 R3 150 P Chapter 3 Virtual Proving Ground 3 If the Reverse Direction option is toggled on it will rotate round the negative direction of the selected coordinate system Round N1 gt N2 1 Select two nodes and the positive direction of the rotation axis is the vector direction from N1 to N2 2 The default rotation direction is defined according to the right hand rule The thumb points to the positive direction of the rotation axis and the bending direction for the other four fingers is the rotation direction 3 Enter the rotation angle in the Angle input box 4 Ifthe Reverse Direction option is toggled on the positive direction of the rotation axis is the vector direction from N2 to N1 3 2 6 4 Delete Airbag Delete Airbag Aribag AIRBAG_1 7 Apply Close The user is allowed
118. oint directly in the Postprocess The corresponding measure node ID wth VPG impactor is listed in the following table Test Type Measurement Data Measure Node ID Child Headform Headform Node 6000001 ResultantAcceleration Test Acceleration HIC Automatically define no typing needed Adult Headform Headform Node 7000001 ResultantAcceleration Test Acceleration HIC Automatically define no typing needed Legform Acceleration Node 8000001 X Acceleration Legform Test Shear Displacement Translational spring 8000002 Bending Angle Torsional spring 8000001 Relative Rotation Force on Bottom of Contact 9000001 X force Upper Legform Force on Top of Contact 9000002 X force Upper Legform Upper Legform Central Moment Section 9000001 Result Moment Test Upper Moment Section 9000002 Result Moment section 9000003 Result Moment Parts with Adjustable Part 9000014 Quality gt After the user selects the Output Path in the Path input box the program will directly 131 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground add the name of the output folder according to the test type Click the Apply button to output the file The keyword INCLUDE and INCLUDE_TRANSFORM of DYNA are adopted when the file is output It should be controlled that each subfolder corresponds to an impact point and the model car file is placed under the home folder The relationships are illustrated in the following figure J Row0 Ji Rowl
119. old line is parallel to V Axis in the local coordinate system by default That is to say Fold Line Angle 0 The following figures illustrate the situations for the fold line when the fold line angle is assigned with different values nil aia S ifii AEE EREE EEEE ERS ihes aen o iaie VENAE ANUN Gul eek ae Wat tetas HESSScnMaSSiean coe donon mereg st See ame geo Se EEEE a HELLENE ETENI jer HEELS elite in a o O Q 0 45 90 535 9 Ignore Thickness from Previous Folds This option allows the user to decide whether to take the previous fold steps into consideration If this option is toggled on it will pass through the folded meshes directly 143 Inventium PreSys 2012 R3 Pl P Chapter 3 Virtual Proving Ground As is illustrated in the following figure the step 1 in the left side signifies the fold has finished The step 2 represents the current step and the meshes at the right side need to be folded upward e lf this option is toggled off the step 1 is considered and the meshes in step 2 will be moved above step 1 e lf this option is toggled on the previous fold process will be ignored The step 2 will not be influenced by step 1 and the meshes will be moved below step 1 directly errs recesses Step 1 is considered ae Step 1 is not considered 3 2 6 2 Dyna Fold This function is used to automatically create the punch airbag device It will generate the folded airb
120. on of the Punch Hit Center It allows the user to pick a node on the screen where is the center of Punch location Create Punch Click this button to generate Punch after selecting the hit center Delete Punch Click this button to delete the created Punch Tab2 Parameters AR Test Punch Param eters Card il Job Pressure Value Time Ramp up in 0 1000 m S Hold stable for 0 8000 m s Release in 0 1000 m S Termination Time Step 1 1000 1 0000 mi s Steps in d3plot 20 fa Termination Time Factor End Time Steps in time history 200 o EE ose O Value Enter the pressure value User should pay attention to the current unit Ramp up in The time for loading the force Hold stable for The time for the force effecting on the model Release in The time for unloading the force End Time It is defined by the total time for loading the force force effect and unloading the force This parameter can be modified by the user if desired Factor This factor is used for the user to scale the time length of the simulation Termination Time This value equals to the product of Factor and End Time Steps in d3plot The numbers of D3plot outputted during simulation Steps in time history The numbers of node or element information outputted during simulation Tab3 Card 159 Inventium PreSys 2012 R3 P Chapter 4 DTM Module Pressure Test Punch
121. onding impact point in the display area will be highlighted gt Likewise click one of the impact points in the display area and the row where the corresponding impact point is located in the list will be highlighted gt In the Index Column there is a status box in front of the sequence number The status box will be displayed in different colors according to the impact point conditions The result file of the impact point can be found correctly wth normal solver calculation E The result file of the impact point can be found correctly However it fails to find the message file generated by solver calculation O Submitting the DYNA file of this impact point failed The message file prompts the user with error termination Mi Failto find the folder corresponding to this impact point 4 The total score for the tested impact points will be displayed in the score area marked with 4 5 The Plot Control area marked with 5 controls whether the score of the impact point or other values are displayed in the display area or not The following figure illustrates the postprocessing result for a vehicle and the scores for impact points are clear at a glance Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground 6 When the analyses results for the Headform Legform and Upper Legform are finished the user can view the Final Score and Star of Vehicle on the All task panel as illustrated in the following figure
122. ormation OO Seatbelt Crash Regulation Pedestrian Protection Dyna Fold Position Airbag Delete Airbag The user is allowed to fold the airbag through the following operations 1 Define Airbag Parts Click the Airbag Parts button on the Airbag Geometry Fold window and it will pop up the Airbag Define window on which the user can define a new airbag by selecting the part or select a defined airbag Airbag Geometry Fold Airbag Define Airbag Define Selected Parts Airbag Parts Local CS Name AIRBAG 2 Fold Step O O R O Selected Airbag Frames 15 Loop Aribag Create Delete OK Close The Airbag Define function is used to process some parts by taking them as a whole The program will only fold the elements contained in the current airbag when folding the airbag The Delete Airbag function can be used to delete the defined airbag It only considers that these parts are not an integral whole any more but it will not delete any part or element 2 Define Local CS Click the Local CS button to select the local coordinate system used in folding the airbag If this 139 Inventium PreSys 2012 R3 28 P Chapter 3 Virtual Proving Ground option is not selected it is the global coordinate system by default Airbag Geometry Fold Airbag Define Airbag Local Cs 7 aIRBAG1 O Local CS Origin 0 0 0 0 0 0 O Fold Step X Axis 1 0 0 0 0 0 m S 0 Y Axis 0 0
123. overlaps with X Z plane in the global coordinate system 118 Inventium PreSys 2012 R3 oe P Chapter 3 Virtual Proving Ground XZ plane oi Create the Impact Zone 1 The user needs to select the pedestrian protection regulation used from the Standard option before creating the impact zone as illustrated in the following figure Presently the VPG Safety module supports the following pedestrian protection regulations e Euro NCAP Version 6 0 February 2012 e Euro NCAP Version 7 0 March 2013 e GTR November 2008 119 Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Pedestrian Protection Marking Standard EnroWCAP VF 0 impactor Test Headform Test Legform Test W Upper Legform Test Vehicle Definition W V shaped Front End Ground Z Value 0 0 select Bumper 0 Select Bonnet 0 Select Windshield 0 Select 2 A Pillars 0 Select 2 Fenders 0 Select Head Lamp Front Grill etc d Test Zone Boundary Plotel Apply Close 2 Select the test type The pedestrian protection includes the Headform Test Legform Test and Upper Legform Test The user needs to specify different parts on the model car for zoning for different test types The following table lists the automobile parts for selecting according to different test types Test Type Required Automobile Parts Optional Automobile Parts Headform Test Bumper Bonnet Windshield Head Lamp Front Grill etc A Pillar and
124. owing figure including the commonly used selection modes such as Pick Box and so on Please refer to Section 2 7 1 for detailed description about these selection modes Only the Surface Boundary method marked in the following figure is introduced in this section By Cursor Trace C Surface Boundary By Attached By Other Methods Selection Options Exclude Surface Boundary Toggle on this option to select the boundary of the surface 2 5 Select Surface Window The Select Surface window is illustrated in the following figure including the commonly used selection modes such as Pick Box and so on Please refer to Section 2 7 1 for detailed description about these selection modes 40 Inventium PreSys 2012 R3 PreSys Instructions gt Trace By Attached By Other Methods selection Options Exclude Reject 2 6 Select Coordinate Window The coordinate point means the position which refers to the coordinate position of the node or the point on the line surface and the work plane The Select Coordinate window is illustrated in the following figure and various selection methods will be introduced in details in this section 1 By Cursor Select Coordinate O By Cursor x 7 ORS Trace rent Front Coordinate value OEA O DX DY DZ 5294 3 8 0 0 Apply Input Value Close The selection of a point or node may be made by cursor The node point endpoint of a line any
125. ply button to delete it 71 Inventium PreSys 2012 R3 dl P Chapter 3 Virtual Proving Ground 3 2 Safety The models such as the dummy safety barrier and seatbelt play an important role in the automobile crash simulation analysis while it will take much time for the dummy safety barrier and seatbelt modeling during the simulation analysis The Safety module provides a series of high quality dummy and safety barrier etc which saves plenty of time and improves the modeling precision with its quick modeling and effective orientation 3 2 1 Dummy 72 Dummy plays an important role in the vehicle crash analysis Presently ETA has its own abundant dummy library it also supports dummies of LSTC ARUP and so on It is convenient for the user to move or rotate the dummy so as to position the dummy to a proper location after the dummy model is read in 3 2 1 1 mport Dummy This function facilitates the user to import models in the dummy library of ETA Various dummy models such as Front Impact dummies Side Impact dummies and FAA are included in ETA dummy library Import Dummy Type Deformable 505 7 H Point 0 0 0 0 0 0 fa SelectReference Node 0 gt Apply Close Type Selects the dummy type to create The following figures show all dummy types in ETA dummy library Inventium PreSys 2012 R3 pP Chapter 3 Virtual Proving Ground Deformable 93 Deformable 30 Deformable 3 Rigid 95 73 Inventium PreS
126. race E Front SpreaK 2 0 JE Stop Angle B00 z By Other Methods s lection Options Exclude Consider Feature Line 30 0 E Angle gt 4 By mE By Element it allows the user to select the node of this element by selecting the element 33 When this option is selected it will pop up the Select Element Window as illustrated in the following figure When the element is selected the number of the selected elements will be displayed on top of the Select Element window Then click the Close button to returns to the Select Node window Inventium PreSys 2012 R3 34 PreSys Instructions Trace C Front Inside Region EF Spread 3 0 ae E Attached By Other Methods Neighbor selection Options Filters Element Type Exclude Close mE By Node Set lt enables the user to select the nodes by selecting the node set When this option is selected it will pop up the Select Node Set window as illustrated in the following figure The user can select the node from the node set list and all nodes included in the selected node set will be selected The keyword corresponding to the Node Set is SET NODE which can be created or modified by the user in the model tree Inventium PreSys 2012 R3 35 a P Chapter 2 PreSys Instructions By Cursor E Trace By List SET_NODE 1 Tr m By Other Methods Selection Options mE By Part Set lt enables the user to select the n
127. ram will list the Phi Theta and Psi stop angles for this assembly in the Assembly Angles The user can arbitrarily rotate this dummy assembly within the stop angles The user can enter the angle value in the Current edit box or drag on the screen with the mouse when rotating the dummy Left Button Drag one of the dummy assemblies to rotate about the Phi X axis of its local coordinate system Middle Button Drag one of the dummy assemblies to rotate about the Theta CY axis of its local coordinate system Right Button Drag one of the dummy assemblies to rotate about the Psi Z axis of its local coordinate system The current angle for this assembly can be real time displayed in the Current edit box while the user is dragging one of the dummy assemblies Rotate Symmetrically When this option is toggled on the other side of the dummy assembly will be rotated symmetrically while the user rotates one side of the dummy assembly Inventium PreSys 2012 R3 dl P Chapter 3 Virtual Proving Ground 18 For example if the right hand of the dummy is selected and this option is toggled on the left hand of the dummy will rotate symmetrically while rotating the right hand Maximum Minimum The maximum and minimum angles of the assembly can be rotated The user can rotate this assembly randomly within the range of this stop angle Current The current position for one of the dummy assemblies The user can change its current position
128. rbag are provided Translate and Rotate The user is allowed to select the airbag through the dropdown menu of Airbag Translate Position Airbag Aribag AIRBAG 4 B Translate Rotate Direction X Axis C Y Axis Z Axis H N1i N2 C Increment Reverse Direction select CS Global Distance 1 0 Along X Y Z Axis Translate along the X Y Z Axis of the defined global or local coordinate system 148 Inventium PreSys 2012 R3 Chapter 3 Virtual Proving Ground 1 Click the Select CS Global button to set the local coordinate system and the global coordinate system is the default 2 Enter the value for the distance to translate in the Distance input box 3 If the Reverse Direction option is toggled on it will translate along the negative direction of the selected coordinate system N1 gt N2 1 Select two nodes and the translation direction is the vector direction from N1 to N2 and the distance is the magnitude of this vector by default 2 Thetranslation distance can be modified manually 3 If the Reverse Direction option is toggled on it will translate along the direction from N2 to N1 Increment The translation is performed by entering the increment in the X Y Z direction in the global or local coordinate system 1 Click the Select CS Global button to set the local coordinate system and the global coordinate system is the default 2 Enter the translation distance in each direction
129. results 30 Inventium PreSys 2012 R3 31 P Chapter 2 PreSys Instructions respectively when the Consider Feature Line option is toggled on The user sets the stop angle to 91 and feature angle to 29 then the feature line with which the feature angle greater than 29 can be taken as the special boundary Trace Spread 15 0 Stop Angle 91 0 By Other Methods 30 degree Selection Options Exclude Consider Feature Line Angle 29 0 The following two figures illustrate the selection results when the Consider Feature Line option is toggled off Set the stop angle to 91 and toggle off the Consider Feature Line option and then only the boundary nodes that are connected with the boundary of selected nodes with the angle less than 91 will be selected Trace By Other Methods Selection Options Exclude Consider Feature Line Angle gt 29 0 The following two figures illustrate the selection results when the Consider Feature Line option is toggled off Set the stop angle to 91 and toggle off the Consider Feature Line option and then only the nodes in the boundary line are selected E When the rigid bolt connection is simulated the Along Edge option facilitates the user to select the node in the bolt hole as illustrated in the following figure The user only needs to select one node out of each of the bolt and the program will select all nodes of the bolt hole Inventium PreSys 2012 R3 2 0
130. s Runs and views session files Submits solver files and so on EDIT Undo Redo Control VIEW Zoom Pan Rotate Functions and Visualization Control Shade Wireframe etc PREPROCESS Contains a menu of preprocessing functions PART Manages and displays each part LINE POINT Creates and modifies line surface data SURFACE Creates and modifies surfaces REFERENCE GEOMETRY Creates and modifies the reference geometry MESHER Access to Automeshing tools for Shell and Solid Elements ELEMENT Creates and modifies elements NODE Creates copies transforms and manipulates nodes MODEL CHECK Checks element criteria warpage boundary aspect ratio etc CONNECTION Creates the spotweld and adhesive and so on COORDINATE SYSTEM Creates and deletes coordinate system and so on MATERIAL Creates and assigns material properties PROPERTY Creates and modifies sliding rigid wall interfaces for LS DYNA B C S Loads the boundary conditions and loading and so On Inventium PreSys 2012 R3 15 Chapter 2 APPLY TOOLS WINDOW HELP PreSys Instructions Accesses the function of VPG DTM and ALE FSI and so on and the VPGMOUDLE file needs to be installed Customization of Measurement Model Units Menus Solver Conversion and Toolbars Controls Display of the Model Explorer Command Window and Message Window Multiple View and Model Control Access to On Line Help and Manuals Version Identification Inve
131. s needed for the output Different forms of force can be got for element types Tab4 Job 160 Inventium PreSys 2012 R3 P Chapter 4 DTM Module Pressure Test Job Punch Parameters Card Solver Output File A Single Job Memory 512 0000 MB NCPU 2 o E Launch solver after output file Output File a Close Solver Enter the path for the solver Output File Set the path for the output files Memory Enter the desired memory with MB Unit NCPU Enter the CPU number Launch solver after output file When this option is toggled on the output files for pressure test can be automatically submitted Output File Output the pressure test files set by the user 4 3 Vibration Test i Ej icon i Vibration Test can simulate the response of the electric product in the different situation for example impact shock or drop There are four tabs in Vibration Test which includes Punch Parameters Card and Job Tab1 Punch 161 Inventium PreSys 2012 R3 162 P Chapter 4 Vibration Test Punch Parameters Punch Diameter 30 0 o mm Gap between Punch and Model 5 Create Punch Delete Punch DTM Module Diameter Enter Punch diameter in the current length units with mm by default Gap Enter the distance between Punch and the model Create Punch Click this button to generate Punch after selecting the hit center Delete Punch Click this button to del
132. se two options can be activated only when Snap On Current Ref Plane is activated and the Current View Plane option is toggled off When these two options are toggled on it will display and snap the grid on the current work plane as illustrated in the following figure The user is allowed to set the Current Reference Plane at the bottom of the display area as illustrated in the following figure i FLATE M ee Eo O i XOY Ol tee 2 Trace This option is used to facilitate other selection method and the position captured by the 42 Inventium PreSys 2012 R3 a e P Chapter 2 PreSys Instructions program will be highlighted on the screen 3 Front This option can be activated only when the node is selected Toggle on this option to select the node nearest to the user 4 Coordinate Value gt XYZ This option allows the user to enter an X Y Z coordinate into the field for definition of a point location After the values in X Y Z are entered click the Apply Input Value button directly to create the coordinate point gt DX DY DZ The DX DY DZ option allows the user to define an offset from the last selected location to select a new location In the case where no the last selected location selected for the offset the origin 0 0 0 will be selected After the values in DX DY DZ are entered click the Apply Input Value button directly to create the coordinate point Selection Options 5 Reject
133. subdirectory which is convenient for the user to access gt The model tree contains the subdirectories below as illustrated in the following figure Part Coordinate System Element Node Geometry Reference Plane Reference Axis Material Property B C S and Keyword S Model Info at We rdinate System 51 KJEE ILI eer S T k haai ef Oo a FE g a a ra r a om a gt Right clicking each subdirectory the function menu will pop up including Create Delete Modify and so on which can be accessed by clicking directly For example when the user right clicks the Element Node subdirectory and selects Create gt Create Elementin the popped context menu successively the Create Element task panel can be accessed directly as illustrated in the following figure Create Element Edit Keyword Element Type F Part 121 oe Zra A L A D is H Coordinate System 51 E E 10784 i Create Element KIK E Delete d Create Node Select al Transform p Node Only Node Point ee mes C SelectNodes 0 Renumber i Identify Apply Close gt Theuser is allowed to configure the right click menu for each directory As is illustrated in the following figure the user can access Tool gt Customize The Customize window will pop up and the Display Box in the right of the window can Inventium PreSys 2012 R3 Pp Chapter 2 PreSys I
134. suite Inventium Application Manual Version 2012 R3 Release Date October 2013 Inventium PreSys 2012 R3 FOREWORD The concepts methods and examples presented in this text are for illustrative and educational purposes only and are not intended to be exhaustive or to apply to any particular engineering problem or design This material is a compilation of data and figures from many sources Engineering Technology Associates Inc assumes no liability or responsibility to any person or company for direct or indirect damages resulting from the use of any information contained herein Engineering Technology Associates Inc 1133 East Maple Road Troy Ml 48083 Phone 248 729 3010 Support 800 ETA 3362 Email support eta com Fax 248 729 3020 Engineering Technology Associates Inc ETA the ETA logo Inventium logo and PreSys logos are the registered trademarks of Engineering Technology Associates Inc All other trademarks or names are the property of their respective owners Copyright 2010 2013 Engineering Technology Associates Inc Inventium PreSys 2012 R3 Table of Contents Table of Contents Ta ble Of C OMbeIKG cssscccsnescccsesscenneseeeneesseeneeeeneeeseeneeeneeneesneeneseneneeenneneeenenaene I 1 1 Description of the Inventium Suite ANd PreSyS cc ccsseeesssseeessseeesssseeesssteeeesees 3 1 2 Documentation eeeeececcccccesssssseeeeeeeeeeesseseeeeeeeeeeesseeeeeeeeeeeeeeessseee
135. t s 0 S 2 PreSys VPG FSI DYNAFORM Drop Test n IT Virtual Proving Ground Blast ee Ciampi and Drop Test Customized a Cuco ee FSI Customized Forming and developed for users Postprocessor developed for users of and developed for Analysis Customized of electron industry E E E users of military and developed for CAD Interface oe industry users of molding s Define the dropping m Automeshing Qui ck Tire Modeling m industry direction Model Assembly Se Facilitate the user automatically _ Road Library to create the fluid CAD Interface B d P IRAE E Boundary Condition d Set the dropping Definition Na E oe A Automatic Meshing height automatically Contact Definition Cri iois Laary R Formability Analysis Import the models Pedestrian Protection a a Tiia F Tarai from different Result Output Definition Analysis Define LS DYNA Die Face Analysis oa ages pi coupling analysis Contact Definition iad Analysis Result i aleret ee oe oae i Crash Analysis automatically Result Outo Submit the Processing Navigation a calculation Definition ee automatically The primary toolset included in the Inventium Suite is the PreSys finite element modeling toolset The PreSys software includes an integrated preprocessor and post processor as well as interfaces to major CAD software products PreSys is a complete CAE software toolset for applying theory and engineering principles
136. th the rigid material and different revolving speeds are needed for the endurance and high speed performances of the tire The drum diameters used are also different for the passenger car and cargo truck Therefore the parameters can be defined are Drum Velocity and Drum Diameter gt Tire Cleat Clearance In the simulation analysis the user needs to define the initial distance between the tire and the cleat in order to avoid the initial penetration between the tire and the cleat and the default 2mm can be taken The following figure illustrates the schematic diagram between the drum tire and cleat in the cleat test 65 Inventium PreSys 2012 R3 dl pP Chapter 3 Virtual Proving Ground 3 1 2 3Assembly Tire This function is used to assemble the tire model in the automobile model of the user conveniently and efficiently The connection between the tire and automotive suspension uses the Revolution Joint for simulation The user only needs to select the tire and transmission shaft on the suspension as illustrated in the following figure Assembly Tire Select Rigid Part 0 Joint Node Select 2 Nodes 0 The following aspects should be noted 1 The connection between the tire and transmission shaft uses the Revolution Joint for simulation and the transmission shaft should use the rigid material for modeling 2 The program will automatically define the line of centers for the tire and
137. the boundary it will select and highlight all nodes on the U Axis side in the coordinate system The highlighted nodes in white are selected nodes as illustrated in the following figure u Right HE 5 Fold Thickness After folding the distance between two layers of ribbon is illustrated in the following figure Please Note For the Scrunch Fold type the fold thickness refers to the thickness that the airbag has been compressed As is illustrated in the following figure the total thickness of the airbag is 25mm before folding When the Scrunch Fold type is adopted the user can set the Fold Thickness to 10mm Then the thickness for the whole airbag is 10mm after folding Before Folding After Folding 142 Inventium PreSys 2012 R3 dl P Chapter 3 Virtual Proving Ground 6 Scale Factor This factor is used to describe the moving for the inner and outer ribbons of the airbag Generally itis setto 1 to prevent the penetration SE 2 SE 1 SF 0 5 7 Fold Point The user only needs to select one node and the program will automatically determine the fold line that goes through this node and is vertical to the fold direction It highlights the fold line with filled dots and ee all nodes to be folded with hollow dots HOD OOS Ei Oa et 8 Fold Line Angle Fold Line Angle signifies the included angle between the fold line and V Axis in the local coordinate system When folding the f
138. to select the airbag to delete and then click the Apply button to delete this airbag definition The Airbag Define function is used to take some parts by taking them as a whole The program will only fold the elements contained in the current airbag when folding the airbag The Delete Airbag function only considers that these parts are not an integral whole any more but it will not delete any part or element Inventium PreSys 2012 R3 P Chapter 4 DTM Module Chapter 4 DTM Module The Drop Test vertical application toolset provides the user with a set of menus that allow for definition of test scenarios including a drop test pressure test vibration test and shock test These are special applications of LS DYNA Inventium provides a series of Chinese National Standards for the user to set parameters such as drop height drop angle of the model in the DTM module After the user has selected one of the standards the program will automatically set parameters specified in CHINA GB T 4 1 Drop Test G 4 Icon Drop Test simulates the process when an electric product drops from a defined height to the rigid ground It allows the user to analyze the deformation and the force in each parts of the electric product There are four tabs in Drop Test menu Drop Parameters Card and Job which enables the user to easily perform the process of model setting and solver submitting Tab 1 Drop 151 Inventium PreSys 2012 R3 P Chapt
139. ts the mouse under Barrier Velocity the schematic diagram for the velocity direction of MDB will be displayed as illustrated in the following figure Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Crash Regulation Regulation Barrier Parameter ae er Velocity Ven All default settings on this tab are derived from the related regulations The user is allowed to modify the parameter as needed Then click the Apply button to import the MDB as illustrated in the following figure 3 Dummy The user is allowed to click the Dummy tab after importing the MDB as illustrated in the following figure 105 Inventium PreSys 2012 R3 106 p Chapter 3 Virtual Proving Ground Crash Regulation T T i J _ Regulation Barri er Dummy Cards H Point Ty N SeletHPomto Dummy Source VPG Dummy Type SID j External File Sey Invoke an mene aena nanata eun ao aananann sis maaana n See Apply Close The user is allowed to add the dummy and add the seatbelt after positioning on the Dummy tab H point Position for the importing dummy The user is allowed to enter the coordinate for H Point or select the node from the screen There is no need to be too precise for this point location The user could adjust the dummy location through Position Dummy after importing the dummy Dummy Source The user is allowed to select the dummy type
140. ule it can easily generate air ALE mesh explosive ALE mesh and so on create ALE material property and ALE element property as well as create state equation multi material element fluid solid coupling and ALE algorithm control parameter A detailed description of each function is given in the following sections 5 1 Solver Setting Inventium ALE FSI module supports LS DYNA solver When using ALE FSI module for explosion analysis please check if the current solver is LS DYNA following the steps 1 Click Tools gt Option Center to enter the Option Center as illustrated in the following figure 2 Click Import Export Solver Template to confirm the default solver is LS DYNA If not click and select LS DYNA from the dropdown menu 170 Inventium PreSys 2012 R3 P Chapter 5 ALE FSI 1P Option Center Category Value Directory OOOO Name Value General Default Solver LS DYNA AO View LS DYNA dyna tpl A ImportllExport Nastran nastran tpl ee General NEi Nastran nei_nastran tpl H E SOlVEr Template NISA nisa tpt 2 J IGES Moldex3D moldex3d tpl Ef Moldex3D H E GeomModeling H E Preprocess H E Postprocess H a DTM H E FSI Option center 5 2 Generate ALE Solid Mesh Inventium uses parametric mesh generation method which enables the user to generate ALE mesh and adjust the contour dimension and mesh size of the model conveniently Click Application gt ALE FSI from the main menu to enter the interface o
141. ummy gt M odify Dummy menu Inventium PreSys 2012 R3 P Chapter 3 Virtual Proving Ground Modify Dummy Current dummy_2 B H Point 0 0 0 0 0 0 E Assembly amp v H dummy_2 Torso 364 to E E Yoke Right lasd esal E _E Upper Arm Right tal atal F Lower Arm Right Fa e F Hand Right had 254 E Et Yoke Left aa 4 0 Upper Arm Left Lower Arm Left Hand Leff Upper Leg Right Lower Leg Right i Foot Right a TE 4 k are k 4 P ba 3 i i n E 7 ha as 5 k i O a k z E E tu tal F Lal 4 mT p OK Close Current If there are multiple dummies in the database the user can assign the dummy that need to be modified through this option H Point The user reassigns the H Point Coordinate for the dummy After modifying the new H Point is the basis for the dummy to move or rotate Assembly TheAssembly Window lists the dummy tree structure for the user to modify gt Right click the subdirectory to delete or create the new level gt Leftclick the subdirectory to display the part information contained in this assembly gt Leftclick the part set button or stop angle followed by each assembly to modify it gt Right click each part set button and stop angle button to restore it to 0 For example the user needs to modify the DUMMY_2 and create the left lower leg as illustrated in the above please follow the st
142. ys 2012 R3 74 p Chapter 3 Virtual Proving Ground FAA Hybrid II Inventium PreSys 2012 R3 19 P Chapter 3 Virtual Proving Ground H Point Define the H point location for the dummy The user can enter the coordinates in the edit box or pick the node on the screen Apply Imports the dummy Close Closes the Import Dummy window 3 2 1 2Position Dummy This function allows the user to adjust the dummy position after the dummy is imported There are two tabs for this function which includes translate the dummy and rotate the dummy assembly Current If there are multiple dummies in the database the user needs to select the target dummy to translate or rotate Tab1 Translate The H point can be repositioned with this tab Inventium PreSys 2012 R3 76 p Chapter 3 Virtual Proving Ground Fosition Dummy Current ETADEFORMABLE 50 B Translate Rotate SE ae H Point 0 0 0 0 0 0 3 Select Referenced Node 0 Drag In XYZ Space 5 Along X Axis Along Y Axis Along Z Axis In XY Plane 0 In YZ Plane 5 In XZ Plane Reset H Point iz m r n H point The user is allowed to enter X Y and Z coordinate value for H point in the edit box then click the middle mouse button or Apply button the dummy will be moved to the new position or the user can change its value with the plus or minus arrow and the dummy is located to the new position directly

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