Primer 9.3 RC1

1. Primer 9.3 RC1

2. Primer 9.3 RC1 • Miscellaneous enhancements • Copy/translate • Cut section display • Include file control from Edit panels • Overspill from text boxes • INCLUDE file version control • Check for discontinuous rigid bodies • New options in Write • Other • Spotwelding • Bolts • Mechanisms and seat positioning • Dummy positioning • Seat foam compression • Instrument Panel Impactor positioning • Automatic assembly enhancements

3. Copy & translate (Also available for Rotate)

4. Cut Sections • The capability and menu is very similar to D3PLOT 9.2. • Start the cut section menu (or shortcut X). • Pick a node to create the section – shortcut N. • Dragging the section – shortcut D. Orientation of cutting plane Change display of elements on +ve and –ve sides of the plane Section through shells shows true thickness

5. If INCLUDE is Transformed, (T) appears here. In this case the numbering shown will be the transformed numbering, not the numbering in the keyword file. INCL file location • Edit panels now state which INCLUDE file the entity is in. • Can change INCL file using the browse button. • Option to Find Referenced Items.

6. Text boxes • Where the text is too long to fit in a text box, this is now indicated by white horizontal bars: • For some text box types, the whole text can be seen by hovering over the text box with the mouse. This will be extended to all text boxes in future releases.

7. INCLUDE file – Version control • How can we tell that a model contains up-to-date INCLUDE files? • Create “Versions” (e.g. each Version may correspond to a Design Gateway) by right-click of the Model in the Include Menu. • Set the Version against which INCLUDE files should be checked.

8. INCLUDE file – Version control • Identify an INCLUDE file as belonging to a Version (or design gateway) as shown. • This information is then kept in the keyword file. • The model check will then identify any INCLUDE files that belong to a different version (or design gateway) than the default version for the model.

9. Check for discontinuous rigid bodies • New check (warning) – rigid body with discontinuous mesh. • This check is optional – activate it using Preferences: • Primer=>Checking=>Model quality checks=>Rigid=>Rigid body continuity check.

10. New options in Write • When writing a model using “Select Include files”, the default is for all selected INCLUDE files to be written to a sub-directory. • New button RENAME/INC changes the destination of all the selected INCLUDE files to RENAME. • This setting overwrites the original INCLUDE file…

11. New options in Write • Press RENAME/INC again, this automatically renames the selected INCLUDE files by adding _1, _2 etc to the file name.

12. Miscellaneous • Enhanced input translator for RADIOSS Block format: • Complex definitions of sets now supported. • More material types translated. • Engine file translated as well as Starter file. • For further details, please contact us. • Bill of Materials: if “calculate mass” option is set, Primer now writes the centre of gravity XYZ coordinates as well as the part mass. • Orient Scale and Rotate: option to centre the transformation on the Part Centre of Gravity. Applies only if a single part is selected.

13. Spotwelds • Spotweld capabilities are now found under Tools=>Connection. • The same menu is used to create or modify several connection types (spotwelds, bolts). Primer 9.3 Primer 9.2

14. Primer 9.2: Weld file LS-DYNA model Spotwelds Primer 9.3: Weld file LS-DYNA model Connections Spotwelds Bolts, etc Spotwelds • Primer 9.2 relied on *ELEMENT_BEAM_PID for many of the spotwelding functions. • Primer 9.3 works differently – connection data is stored separately from the FE data: • Failed welds are retained in the model, can be fixed any time. • When creating from a spotweld file, the original XYZ coords are retained. • Easy to change the welds, e.g. beam-to-solid. • Can read and work with spotwelds that were defined outside Primer, e.g. solid spotwelds, beam spotwelds without *ELEMENT_BEAM_PID, etc. • Connection data created automatically on entering the spotweld menu. • Other connection types: bolts etc.

15. Spotwelds • Connection entities may be displayed separately from their FE data. They are coloured by status: green=realized, red=failed, etc.

16. Solid spotwelds • All Primer 9.2 capabilities for beam spotwelds are available in Primer 9.3 for beam and solid spotwelds. • When creating spotwelds (or reading a spotweld file), Primer 9.3 offers the choice of beam, hexa, 4 hexas, etc. • *DEFINE_HEX_SPOTWELD_ASSEMBLY is created automatically in the case of multiple-hexa spotwelds.

17. Connections Table In Primer 9.3, spotwelds are modified, repositioned, reprojected, etc, using the Connections Table

18. Connections Table • To start the table, select which connections to display, then press Apply. Choose which spotwelds to display in the table – e.g. those attached to certain panels, or in this case by selecting the connection entities Using FILTER, you can then select connections of a certain type or status (e.g. welds that failed to create)

19. Connections Table Sort by clicking on the column headers, e.g. to group all the bad welds together

20. Connections Table • Control which columns are visible in the Table using View. Hover-text is available

21. Connections Table Use this drop-down to decide what action should be taken for the selected welds when you press Apply • Click on a weld to select • Multiple-select by click and shift-click or CTRL-click

22. Connections Table • Changing from beam to solid spotwelds: • First, if the model does not already contain a Part that is valid for solid spotwelds, create one. • Select the spotwelds in the Table. • Right-click on Subtype for the selected welds, click Solid (or 4 solids etc). • Also right-click on Part ID, select the new Part (or if the model contains only one valid part for solid spotwelds, Primer will choose it automatically). • Check that the Action box is set to “update & remake”. • Press Apply Selected. • The selected welds will be re-created with solid elements.

23. 3 - Click on the new position. 3 • 4 - Ensure the Action is set to “update & remake”, press “Apply selected”. + 4 + Connections Table • Repositioning a spotweld: • 1 - Select the weld (or several welds) into the connection table. • 2 - Right-click on the coordinates, choose “Pick (from shell)”. 1 2

24. Reading spotwelds from File These file formats are the same as for Primer 9.2. Additional information is needed to create the spotwelds, e.g. what type of element should be used. The files can be written by Primer, by CAD packages or other programs, or csv-format from a spreadsheet. “Primer connection file” is a new file format that contains more information. This file is created only by writing out from Primer.

25. Reading spotwelds from File • As the spotwelds are read from the file, connection data is created. Spotweld elements are created for error-free welds. • Any welds with errors will have connection data with status “bad”, but no spotweld elements. • The bad welds are automatically presented in the Connection Table. • We recommend to add the columns “Error” and “Details” to see why the welds could not be created. • The table can be used for fixing the welds, using the sorting, multiple-selection, right-click to change data, and “remake” facilities.

26. Spotwelding CAD Part = APP_FRAME_12345 • Panels sometimes consist of more than one CAE Part. • Spotweld files written by the CAD system refer to parts by CAD name or number, not CAE part ID. • From the spotweld file, we do not know which CAE Part should be connected. • In Primer 9.3, each panel (“layer”) in the spotweld may be defined by: • One or more CAE Part ID. • One or more CAD part name. • Primer assemblies. • Part sets. PID 1234501 PID 1234502 PID 1234500 Example: Taylor-welded blank • Spotweld files can refer to CAD part name instead of CAE Part ID. Use the Bill of Materials (spreadsheet) to tell Primer the CAD name for each part.

27. Spotwelding • Various methods are available in the Connections Table to define which part(s) may be connected by each spotweld: For example, change definition to “Multiple Parts” and add more possible parts to the list. The spotweld will connect to any one of the listed parts “More” allows different Parts to be selected

28. Spotwelding • Various methods are available in the Connections Table to define which part(s) may be connected by each spotweld: CAD names are available only if these have been read in via Bill of Materials “Change to” changes the selection method but keeps the same Part(s)

29. Spotwelding • Spotweld panels now defined by CAD Name:

30. Using CAD names for parts • Read in a spreadsheet (csv format) using BOM. • Example Bill of Materials with CAD part names: CAE Part ID CAD Part Name or number

31. Bolt connections The connection positions can be seen; the connection properties may be created or edited Bolt-type connections can be “realized” as rigid patches or nodal rigid bodies

32. Bolt connections • Manual creation of bolts through Tools=>Connections=>Create: Bolt selection button

33. Bolt connections • Manual creation of bolts through Tools=>Connections=>Create: • Selection of shells/parts to connect. • Bolt creation method: • X, Y, Z coords – type in coordinate of bolt. • Pick screen point – click on the screen to create bolt. • Pick connection – pick an existing Primer connection point. • Pick single node – pick an existing nodeas the position of the bolt. • Between nodes – pick two existing nodes, the bolt will be created between the nodes. Useful for creating bolts over holes.

34. Bolt connections • Manual creation of bolts through Tools=>Connections=>Create: • Options for bolt creation. • Data for creating bolts: • Optional matl id for bolts – If creating a rigid body merge connection, you can specify the rigid material used here. For the default setting (automatic), Primer creates a rigid material for the bolt. • Rigid bolt type – Two bolt types available, Merge or NRB (nodal rigid body). • Bolt diameter – The diameter of the bolt(s) you are creating.

35. Bolt connections • Types of bolt: • NRB’s (Nodal Rigid Bodies) • Nodal rigid bodies are created at the connection point to the diameterspecified. • Rigid Merges • Rigid patches are created at the connection point to the diameter specified, and jointed by a rigid body merge.

36. Bolt connections • Creation of bolts from existing connection points/spotwelds: • If you already have connection points/spotwelds in the model, these can easily be converted to rigid bolt connections using the connections table.

37. Bolt connections • Creation of bolts from existing connection points/spotwelds: • Select the connections you wish to convert to rigid bolts: • Selections in the connectionstable can be made by using the left mouse button and the “shift” and “ctrl” keys.

38. Bolt connections • Creation of bolts from existing connection points/spotwelds: • The type of the connection can be changed for the selected connections: • By right clicking over the selected connections, under the “Type” column, the “Rigid” type can be selected.

39. Bolt connections • Creation of bolts from existing connection points/spotwelds: • Once “RIGID” is chosen for the type, the subtype can be chosen: • By right clicking over the selected connections, under the “Subtype” column, the “Merge” or “NRB” bolt types can be selected.

40. Bolt connections • Creation of bolts from existing connection points/spotwelds: • After the “Type” and “Subtype” is set, the connections can be remade: • By clicking “Apply selected” the modified connections will be remade as rigid bolts. Make sure “update & remake” is selected as the action.

41. Bolt connections • Automatic creation of connection points from constraint FE data: • Primer can convert rigid merges and NRB’s to connection points. These connection points can then be manipulated as a standard connection definition (i.e. converted to another type (eg. spotwelds), written out to a spotweld file etc.).

42. Bolt connections • Automatic creation of connection points from constraint FE data: • Various options are available when creating connection points from constraint FE data: The maximum size of the constraint selected can be set here For “Selection mode”, if “constraint” is chosen a list of all the rigid constraints of the selected type (NRB or merge) appears at the bottom. You select the constraint(s) you wish to convert to a connection definition here The type of constraint selected can be chosen here

43. Bolt connections • Automatic creation of connection points from constraint FE data: • Various options are available when creating connection points from constraint FE data: If “attached to part” is selected for the selection mode, constraints can be selected by the parts they connect. A part selection list is available at the bottom of the panel The constraints can be selected if they are attached to any part selected, or if all the parts they are attached to are selected

44. Mechanisms Determinate: 1 DoF • Primer 9.3 has a new capability to position mechanisms. • Similar to dummy positioning, but not limited to tree-like systems. • Mechanism can be determinate or indeterminate, and is not limited in terms of number of links or complexity. Indeterminate: >1 DoF Tree: No. DoF = No. of joints

45. Mechanism definition • Assemblies identified by Parts or Part Sets, e.g. back, squab, front links, etc. During positioning, each assembly will behave as if rigid. • Connections (joints) defined at nodes. These are used purely for positioning the mechanism and are independent of any LS-DYNA joints. Connection types: pin, hinge, sliding. • Reference Points (e.g. H-Point) – mechanism can be positioned by specifying coordinates of reference points. Assembly Hinge joint Assembly Sliding joint

46. Mechanism definition • Use the new “Mechanism” menu to create or modify the mechanism definition (assemblies, connections and reference points). • To save the mechanism definition, press UPDATE_MECH. • The mechanism definition is kept in the Keyword file after *END (similar to the Dummy tree file).

47. Mechanism definition - Assemblies Define Assemblies using Parts or Part Sets

48. Mechanism definition - Connections Nodes to locate joint position and axis. The nodes must be attached to one of the connected assemblies. Which assemblies are joined?

49. Mechanism definition - Points Location of point using initial XYZ coordinates, or an existing node To which assembly is the point attached?

50. Positioning the mechanism • To start positioning the mechanism, use “Position” button. • First, use “Drag Assemblies” menu to restrain any assemblies that should not move. • The restraints can be altered at any time during positioning. X-translation Y-translation Z-translation X-rotation Y-rotation Z-rotation