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Modal Frequency study with electrical circuit
Posted 6 sept. 2023, 13:07 UTC−4 Structural & Acoustics, Modeling Workflow Version 6.1 2 Replies
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Dear All,
I have a piezo membrane driven by a voltage source. To speed up the calculation I am trying to use the modal solver. While step 1 (stationary) and step 2 (eigenfrequency) give me satisfying results, The frequency domain solver gives me only nul results: No displacement, no electric field... It feels like nothing is being solved on the last step or that the voltage source is not taken into account.
What can I do to solve this problem?
Thank you in advance!
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It will be better if you could share the file so that person can understand your problem. Share the file, I will look into it
-------------------iamrajakumar@iitkgp.ac.in
iamrajakr@gmail.com
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Modal solutions are based on a superposition of the eigenmodes of the system. When solving the eigenvalue próblem, all Dirichlet boundary conditions are set to zero. As a consequence, it is not possible to use a nonzero Dirichlet condition to excite the modal representation. There is not any nonzero term in any of the modes to be superimposed.
-------------------Henrik Sönnerlind
COMSOL