Solvers

In this step the coupling of ANSA with the LS-OPT will be demonstrated. The presented functionality is available since ANSA 12.1.3 and LS-OPT 3.3. In order to skip the previous sections the user can use the rail_final.ansa file where the morphing actions and the Optimization Task are already defined. However there is the need to rename the file as rail.ansa.

→ Open LS-OPTui.

Define Pre-Processor and Solver

Select the Solvers panel.
As Pre-Processor select ANSA.

Browse for the Command that runs ANSA.
Browse for the Input File of the design variables: rail_DV.txt.
Browse the Database rail.ansa for this example.
Specify the LS-DYNA executable Command.
Specify the input file: main.key with the include ansaout.
For Name of Analysis Case, enter Case_1.
Push the Add button.

The input file main.key.

*KEYWORD
*CONTROL_TERMINATION
$   ENDTIM    ENDCYC     DTMIN    ENDENG    ENDMAS
       60.         0        0.        0.        0.
*DATABASE_BINARY_D3PLOT
       1.                              
*INCLUDE
ansaout          
*END