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Damping ratios are added to a system that is not decoupled by the given eigenvectors

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I an running a modal based frequency resoponse on a vibro-acoustic system. I disabled the Damping on a flexible stuctural part and fluid is linear (no dissipation mechanism is added). Then, I just gave a single 0.02 damping ratio in the Modal Solver node and as a result I get a warning stating "Damping ratios are added to a system that is not decoupled by the given eigenvectors." Could anyone give me a hint on what´s is the issue here? Is there anything I shuold do to avoid it?



0 Replies Last Post Apr 11, 2021, 9:14 p.m. EDT
COMSOL Moderator

Hello Leopoldo de Oliveira

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