This example presents the coupling of LS-OPT with the pre-processor ANSA v14.x.
A front rail will be tested in crash simulation. The target is to find the best arrangement of its embosses in order to minimize the acceleration that appears in the test.
Constraints on the mass of the rail and the intrusion are specified.
The design variables are:
A first run of the nominal case (the rail without the embosses) can give an estimation of the values of acceleration, mass and intrusion.
All measurements took place at a reference point as shown at the picture on the right. Output results have been created for this position which are written in the d3thdt result file of LS-DYNA.
The values from the nominal run are:
The boundaries for the constraints are:
There are three steps needed to connect ANSA with LS-OPT: