This function enables the user to define forming parameters for the LS-DYNA analysis. The dialog box is shown in Figure 10.1.1.

Figure 10.1.1  The Analysis Setup dialog box

UNIT

The user can select a Unit system by clicking the drop down menu of Unit. As shown in Figure 10.1.2, four types of Unit systems are available. The default Unit system is set as <MM, TON, SEC, N>.

Figure 10.1.2  The Unit System drop down menu

DRAW TYPE

The user can select a draw type by clicking on the drop down menu of Draw Type to display the menu illustrated in Figure 10.1.3.

Figure 10.1.3  The Draw Types drop down menu

GRAVITY ONLY

Do not define tool motion. The blank is only deformed by gravity.

SINGLE ACTION

The die (female piece) is above the blank.

DOUBLE ACTION

The die (female piece) is below the blank.

SPRING BACK

Relieve residual stresses of deformed sheet metal part (imported .dynain file).

USER DEFINE

The Draw Type is user defined.

SUPERPLASTIC

Simulate superplastic forming process.

Note: The defined Draw Type works in conjunction with both the BLANK OPERATION/AUTO POSITION and TOOL/AUTO POSITION functions.

Figure 10.1.4  Type of contact interfaces

CONTACT INTERFACE

There are several types of contact interface available for an LS-DYNA stamping simulation, as listed in Figure 10.1.4. The user can set type of contact interface between all tooling and blank. The default contact interface between blank and tooling is set as FORM ONE WAY S. TO S.

Note: Please refer to the LS-DYNA Keyword User's Manual, keyword *CONTACT, for more detailed information about each of the contact interfaces.

STROKE DIRECTION

The user can define stroke direction in X, Y, or Z.

CONTACT GAP

The contact gap is the minimum distance between tooling and blank after auto-positioning. The default contact gap is set to 1.0. The contact gap will be overwritten if blank thickness is defined.

DYNA SOLVER PRECISION

This option enables the user to set the path of Single and Double Precision solver. If the user submit card or restart file in the file menu, the program will start LS-DYNA from the path set here. The user can click the  button to change the path.