Uneven Results in Acoustic-Piezoelectric Coupled Analysis

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Hello, I am a student studying numerical analysis. I have a question that came up while using COMSOL.

I am currently performing an acoustic-piezoelectric coupled frequency analysis. In the image, the lower area is the piezoelectric region, and the upper area is the acoustic medium. For the boundary conditions of the piezoelectric element, I applied a surrounding roller boundary condition, with Electric Potential boundary conditions of 0V and 0.1V at the top and bottom, respectively. In the analysis results, the voltage was applied correctly, but the z-displacement and acoustic pressure at the coupled boundary showed uneven results. This issue did not occur when I used the same boundary conditions in COMSOL version 3.5. What could be the reason for this?



2 Replies Last Post 2024年11月13日 GMT-5 06:34
Acculution ApS Certified Consultant

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Posted: 3 weeks ago 2024年11月13日 GMT-5 02:49

Are you using the same mesh in the newest version vs 3.5?

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René Christensen, PhD
Acculution ApS
www.acculution.com
info@acculution.com
Are you using the same mesh in the newest version vs 3.5?

Mads Herring Jensen COMSOL Employee

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Posted: 3 weeks ago 2024年11月13日 GMT-5 06:34

Hi Sang Uk Park

I think this is best resolved if you send the model to support. This could be one of several issues.

Best regards Mads

Hi Sang Uk Park I think this is best resolved if you send the model to support. This could be one of several issues. Best regards Mads

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