i’m doing a topology optimization with Optistruct. The part is a rotational symmetric body, which is loaded with 8 independent cosine functions uniformly distributed over the circumference. Each one has its own Load Step.
Until iteration number 31 everything works fine, the process is at 40% and the results looks quite good, but definitely not finished yet . But then the optimization freezes and remains in this state. The last entry in the .stat-File is shown here.
Does anybody know, what the problem could be? What means the FCTMTX at subcase 4?
Thanks for any information and assistance!