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multi physics coupling says all the domains are not applicable

Posted 12 apr 2025, 03:24 GMT-4 1 Reply

Ermias Shimelis Lakew
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Hello everyone, I'm trying to simulate the piezoelectric energy harvesting with cantilever beam and when I check the multiphysics coupling says all the domains are not applicable as shown in the attached screen shoot. I have made the material type for the charge conservation as solid and still problematic, and results to have zero voltage generation, since I want to plot the frequency with voltage output. Would you please help me on fixing these problem?

Thank you for your help

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1 Reply Last Post 12 apr 2025, 07:40 GMT-4
Henrik Sönnerlind COMSOL Employee

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Posted: 6 months ago 12 apr 2025, 07:40 GMT-4

You must use a Charge Conservation, Piezoelectric node.

https://doc.comsol.com/6.3/docserver/#!/com.comsol.help.comsol/comsol_ref_acdc.26.51.html?highlight=charge%25E2%2590%25A4conservation%25E2%2590%25A4piezoelectric

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Henrik Sönnerlind
COMSOL
You must use a *Charge Conservation, Piezoelectric* node.

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