Srikanth

I am doing topology optimization for maximizing the frequency of a desired mode. I have used required cards PARAM,MFILTER,0.7 ; PARAM,MODETRAK,YES ; PARAM,TRAKMETH,0. Still the solver is not targeting the specified mode for optimization.

PARAM,TRAKMETH,0 corresponds to Mass cross-orthogonality check. I have used normalization method 'Mass' in EIGRL card. Is that the issue for improper mode tracking?

If I delete Mass normalization will the optimization lead in right direction?

Can I try trackmeth 1 or 2 alternately?

Please let me know your thoughts.

Thanks

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Rahul Rajan_21763

Can you try new mode tracking approach which is available for 2017.0 or higher version.

Unable to find an attachment - read this blog

Srikanth K

Hi Rahul,

Thanks for suggesting alternate approach.

So the conclusion is 'the mode tracking methods available in Optistruct are not tracking the mode properly', is that correct?

Thanks

Srikanth