GETTING STARTED FROM SCRATCH
This section will help users getting started in eta/DYNAFORM when line or model data is unavailable. Users will typically generate their own line data according to the following procedure:
1. Create a new part in the PARTS menu.
Lines or elements cannot be created in an empty database. The user must create a part before defining any geometry of model data.
2. Generate line data by its coordinates. See also Section 6.1.1 in Chapter 6, PREPROCESS, for additional information on generating lines.
Exit the PARTS menu.
Enter the PREPROCESSING/LINE/POINTS menu.
Select the CREATE LINE command.
Select the LCS or ABS option for the coordinates in the current local or global coordinate system . See Section 2.5, LOCAL COORDINATE SYSTEM.
Select the XYZ or DXYZ option.
If XYZ is selected, the key-in values of U, V, and W are the coordinates.
If DXYZ is selected, the key-in values of DU, DV, and DW are increments of the previously created point.
Key in the three values in the corresponding field.
Select OK to confirm the values and create the point.
The prompt asks for the coordinates until the user selects either EXIT or DONE from the options area of the display screen.
eta/DYNAFORM lines consist of multiple points. Using the DONE command will create an end to a current line.
Note: The user may continue to generate line data or execute the other CAD functions available in the PREPROCESS menu. Generating a model from line data is described in Section 4.3, ELEMENT.
Once the desired geometry has been created, the user can define each part as a specific tool (e.g. a Die, Punch, Upper/Lower Ring, or Blank) via the TOOL DEFINITION menu. In this menu, the Blank Material/Thickness and Tool/Blank Positioning can also be defined. Once the tools are defined, the interface between the tools will be automatically generated during the writing of the LS-DYNA file.
A DRAW BEAD can be defined in the TOOL DEFINITION menu. Proceeding to ANALYSIS PARAMETER in the SETUP menu, the user can directly submit a job from the eta/DYNAFORM window via the ANALYSIS menu. Once the analysis is complete, the result files can be loaded and viewed by the POSTPROCESS.
After the forming analysis is complete, the result file dynain can be read in and the user can view the formed blank shape. This file is now ready for subsequent springback analysis or multi-step stamping. A trimmed blank model can be written out into a dynain input file from the ANALYSIS/output new dynain file. A blank may be trimmed using the TRIM command of BLANK OPERATIONS in the TOOL DEFINITION menu. Once the analysis is complete, the results can be viewed by reading the d3plot files into the POSTPROCESS.
Please refer to QUICK SETUP to get the detailed simulation procedure using Quick Setup.
Please refer to DFE to get the detailed steps to engineer the die face.