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Can comsol distinguish between longitudinal, transverse, and torsional eigenfrequencies?
Posted 2017年7月5日 GMT-4 19:35 Results & Visualization, Structural Mechanics Version 5.0 0 Replies
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I have performed an eigenfrequency study on a simple cylinder with no boundary constraints. I am basically trying to replicate this comsol example but for a solid cylinder instead of a hollow one: www.comsol.com/model/eigenfrequency-analysis-of-a-free-cylinder-271
I can have comsol produce the first 10 or 15 eigenfrequencies and go through them by hand, inspecting the plots to see which frequency corresponds to transverse, longitudinal, and torsional modes. I have 64 different cylinders to model however so this will get tedious quickly. Is there a way to have comsol detect which type of mode is which and produce a list of only those respective frequencies?
I have tried putting in a guess value for a frequency corresponding to each mode and asking comsol to find the frequency closest to that one. This often fails, especially around the transverse and torsional modes which are nearly degenerate for most of my cylinders. Any suggestions would be appreciated.
Thanks in advance!
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Hello Henry F
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