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Question in Comsol built-in linear elastic equations in solid mechanics
Posted 2020年11月12日 GMT-5 08:48 0 Replies
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Hi I have took much time on undestanding the Comsol built-in linear elastic equations in solid mechanics, but always failed to do that. The reason that I have to understand the solid mechanics linear elastic model is demonstred as below.
I had to investigate the relationship between the pressure and displacement for a 2D annulus structure with inner pressure applied outwards as attached. I used three methods to investigate this relation: experimental, comsol built-in linear elastic model, and one theoretical calculation and the result is attached. Firstly, I must figure out why there is a difference between comsol built-in equation and one theoretical equation. The theoretical equation is attached, which directly demonstrates the relation between the pressure and dispalcement.
But the first difficulty is that how to understand the comsol built-in linear elastic model? I have followed the guideline documentation, but there isn't too many usesful information that I have to use so that I dont know how to transfer the built-in linear elastic model into the direct relation between the pressure and displament for the annulus structure.
I will very appreciate if anyone can really help me! Thanks for your time Best wishes J
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Hello Frank Zhang
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