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Modelling a nonlinear material in Comsol

Posted 9 févr. 2015, 17:47 UTC−5 0 Replies

Yaser Roshan
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Hi,

I need to model a nonlinear material in Comsol. The material model consists of a constant damper and a parallel nonlinear spring (the spring model is F=Kx^3, instead of F=Kx). As the spring and damper are in parallel I cannot easily use the viscoelastic material definition in Comsol (as the assumption over there is the model is a generalized Maxwell, but mine is Veigt).

Can someone please help me by letting me know how can I define the nonlinear material?

Thanks,
Yaser
0 Replies Last Post 9 févr. 2015, 17:47 UTC−5
COMSOL Moderator

Hello Yaser Roshan

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