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Marc Community Forum How to perform a prestressed modal analysis？

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How to perform a prestressed modal analysis？

denzel.li over 5 years ago

Is there a example to perform such an example in marc？like a deformed structure，how could I get its new eigen frequencies？

0 zhong.qin over 5 years ago

You can setup two load cases: a nonlinear static load case followed by a dynamic modal load case. Please see the attached example.

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modal_prestress.mud.zip
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0 denzel.li over 5 years ago

Thanks very much. I just check my own model, I forget open the Large Disp option.
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