I´m running an Optim with two SUBCASES. The first is a ANALYSIS = MODES with constraints on the structure frequencies. The second is ANALYSIS = FLUTTER, with constraints on the damping. The OBJ is the SUM of some frequencies.

I´m getting an output without any FATAL, there is an indication the flutter was run properly, but it seems the constraints on the damping is not working. It does not give any SUMMARY for SUBCASE 2 ( for flutter). Any hints on how to make it work for two subcases?

Thanks

Attached is an excerpt of the S200

Attached Files (1)

excerpt.dat

0 Sanjay Patel over 4 years ago

Hi Isilva, Perhaps there is not sufficient information here. If you don't get a response here from the community, you may want to consider sending the input and the output file to mscnastran.support@mscsoftware.com for further debugging/evaluation.
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0 lsilva over 4 years ago

Ok, Thanks
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