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Error: Underdefined material property 'epsilonr' required by Charge Conservation 1

Posted 2025/04/25 16:49 GMT-4 2 Replies

Tamin
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To whom it may concern

I am trying to simulate the static electric filed distribution for my first step. It was working. But after the COMSOL automatically removes the small details in my model geometry, the Error shows up. The Error is "Undefined material property 'epsilonr' required by Charge Conservation 1." I checked all my Material Property setting. All materials have epsilonr values and all geometry have been assigned materials. I attached my mph file. Could COMSOL experts help me out? Thank you very much for helping.

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2 Replies Last Post 2025/04/28 16:34 GMT-4
Jeff Hiller COMSOL Employee

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Posted: 6 months ago 2025/04/25 17:21 GMT-4

Hello Tamin,

I took a quick look, and I am not an EM expert, but... While all your materials have an epsilonr, not all your domains have a material. See the Settings window when you select the "Materials" node in the Model Builder.

Best regards,

Jeff

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Jeff Hiller
Hello Tamin, I took a quick look, and I am not an EM expert, but... While all your materials have an epsilonr, not all your domains have a material. See the Settings window when you select the "Materials" node in the Model Builder. Best regards, Jeff
Tamin Tai
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Posted: 6 months ago 2025/04/28 16:34 GMT-4

Hi Jeff

Thanks. I find out the issues you pointed out. It is working now. Thanks very much.

Tamin

Hi Jeff Thanks. I find out the issues you pointed out. It is working now. Thanks very much. Tamin

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