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why my frequency graph is not symmetrical?
Posted Feb 13, 2024, 8:46 a.m. EST Acoustics & Vibrations, Studies & Solvers Version 6.1 2 Replies
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i am using prestressed study on frequency domain. i am simulating for the vibration frequency of human vocal fold. on my analysis, i see that one side of the frequency response is too steep. i was expecting the frequency response to be symmetrical.
it seemed to me that this problem occured when i enabled geometric nonlinearity on my study.
changing or adding damping did not solve this problem.
what could be causing this?
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You should upload the file.
-------------------René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com
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Your plots looks like the values for some reason are truncated at zero. You would expect a 180 degree phase shift when passing the resonance. The displacement is complex-valued, and the graph will show the real part.
Try plotting abs(v) and see how that graph looks.
-------------------Henrik Sönnerlind
COMSOL