Optimization Module (TOSCA_OPT)

The optimization loop runs in batch mode. After preprocessing, the solver,RES2VTM module, the optimization module (TOSCA_OPT) and FEM_MODIF module are started successively.

RES2VTM

The program RES2VTM loads the results generated by the solver into the VTM (Virtual SIMULIA Tosca Structure Memory) database file.

TOSCA_OPT

The optimization module requires not only the result file from the previous calculation in ONF format, but also the loads as well as the necessary model and control information found in the optimization database. The optimization module is responsible for specifying the model modifications in ONF format. The optimization loop is completed when the optimization target is achieved or when a stop condition (e.g., the maximum number of iterations) is fulfilled.

FEM_MODIF

FEM_MODIF module generates the modified analysis model by combining the initial model with the instructions from TOSCA_OPT. The optimization database is updated in each iteration.