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Frequency-domain, Perturbation, Prestressed Analysis
Posted 27 nov. 2015, 09:14 UTC−5 0 Replies
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I am trying to solve a mechanical model in frequency domain with an intrinsic stress in the material.
Attached is a very simple model of a beam. I started with the stationary study, then eigenfrequnecy, the frequency domain with added dissipation. All works fine.
Then I added strain and and ran a new study Prestressed Analysis, Eigenfrequency. This works as well, as expected with added tensile strain the frequency increases. Great.
Then I added the prestressed Analysis, Frequency domain. The expectation was to get a new spectrum, similar to the first frequency domain study, but shifted to higher frequencies as predicted in the prestressed eigenrequency study. Teh study gave me a solution but it is a zero resoult, i.e. NOTHING happens at all.
I am not sure what is wring. Thanks for your help.
Hello Matthias Imboden
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