ANALYSIS SETUP

 

This function enables the user to define forming parameters for the LS-DYNA ANALYSIS. The dialog window is shown in Figure 9.1.1.

 

Figure 9.1.1 The Analysis Setup Dialog Window

 

UNIT

The user can select a UNIT system by clicking the drop down menu of UNIT.  As shown in Figure 9.1.2, four types of UNIT systems are available. The default UNIT system is set as <MM, TON, SEC, N>.

 

 

Figure 9.1.2 The Unit System Drop Down Menu

 

 

 

 

DRAW TYPE

The user can select a draw type, as shown in Figure 9.1.3, by clicking on the drop down menu of DRAW TYPE.

 

 

Figure 9.1.3 The Draw Types Drop Down Menu

GRAVITY ONLY

No punch and die is used as the blank is deformed by gravity.

 

SINGLE ACTION

The punch (male piece) is above the blank.

 

DOUBLE ACTION

The punch (male piece) is below the blank.

 

SPRING BACK

Residual stresses deform the imported blank (DYNAIN file).

 

USER DEFINE

The DRAW TYPE is user defined.

 

Note: The defined DRAW TYPE works in conjunction with the BLANKOPERATION/AUTO POSITION and TOOL/AUTOPOSITION

 

 

Figure 9.1.4 Contact Interface Types

 

CONTACT INTERFACE

There are several types of contact interface available for an LS-DYNA stamping simulation as listed in Figure 9.1.4.  The user can set the type of contact interface between all the tooling and the blank. The default contact interface between the blank and the tooling is set as FORM ONE WAY S. TO S.

 

Note: Please refer to the LS-DYNA 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 the 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.

 

 

SOLVER

This function determines the location of the LS-DYNA solver using the SELECT SOLVER window as shown in Figure 9.1.5.  After clicking OK, the entire directory will be displayed in the field as in Figure 9.1.1.

 

 

Figure 9.1.5 Select Solver Window