Integration over a domain

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How do i write an expression for intergation over a domain in comsol. I am trying to compute the load carry capacity of a collar in Comsol. the LCC is the integral of the pressure over the domain.


3 Replies Last Post 2023年3月6日 GMT-5 01:49
Andrii Grytsan COMSOL Employee

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Posted: 3 months ago 2023年3月3日 GMT-5 10:29

Hello,

I suppose you are after Definitions->Nonlocal Couplings -> Integration https://doc.comsol.com/6.1/docserver/#!/com.comsol.help.comsol/comsol_ref_definitions.20.086.html

Hello, I suppose you are after Definitions->Nonlocal Couplings -> Integration https://doc.comsol.com/6.1/docserver/#!/com.comsol.help.comsol/comsol_ref_definitions.20.086.html

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Posted: 3 months ago 2023年3月5日 GMT-5 15:29

Thank you for your response. But how do i incoporate pressure term in the integration.

LCC= integral (P)dxdy

Thank you for your response. But how do i incoporate pressure term in the integration. LCC= integral (P)*dx*dy

Andrii Grytsan COMSOL Employee

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Posted: 3 months ago 2023年3月6日 GMT-5 01:49

Say that you have defined integration intop1 over a domain. You can then use an expression intop1(P) to define a variable or to use in Results section for evaluation (Global Evaluation)

Say that you have defined integration intop1 over a domain. You can then use an expression intop1(P) to define a variable or to use in Results section for evaluation (Global Evaluation)

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