The QuickSetup/Springback GUI (as shown in Figure 9.4.1) allows the user to easily setup a springback
analysis.
Figure 9.4.1 The QuickSetup Springback GUI
TOOL DEFINITION GUI
Allow
the user to define a deformed blank. After selecting the Trim Blank button, select
the trim curve to carry out the trim operation. By default, the deformed blank
is assigned automatically as Blank after the file (in .dynain format) is read into
the eta/DYNAFORM database.
BLANK PARAMETERS
Define
blank material and properties.
CONTROL
The user can either select the
single-step or multi-step implicit method. The single-step implicit method is
the default setting. If it does not provide converged springback results, the
user may select the multi-step implicit method for the springback analysis.
The coarsening option can be activated to
combine the refined mesh prior to springback analysis. The function allows the
eta/DYNAFORM solver to combine neighbouring
elements that have a normal angle difference whick is less than a given tolerance
angle (default is 8°). Coarsening blank mesh can reduce computational noise,
and therefore helps the springback simulation to converge.
CONSTRAINT
Enable the user to select
appropriate constraint points to prevent rigid body motion during springback
analysis.
IMPLICIT PARAMETERS
Define parameters for springback
analysis. The dialog box is shown in Figure 9.4.2. For detailed information about
each parameter, refer to the LS-DYNA Keyword User’s Manual.
Figure 9.4.2 The Implicit Parameter dialog box