HOW TO MAKE NON-LINEAR ANALYSIS OF MATERIAL IN ELMER??I

Numerical methods and mathematical models of Elmer
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paulo.pereira
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HOW TO MAKE NON-LINEAR ANALYSIS OF MATERIAL IN ELMER??I

Post by paulo.pereira » 11 Jun 2019, 23:25

How do I do nonlinear material analysis on elmer? I was only able to do nonlinear geometrical analysis.
I'm sorry for the English

att,

Paulo

kevinarden
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Re: HOW TO MAKE NON-LINEAR ANALYSIS OF MATERIAL IN ELMER??I

Post by kevinarden » 12 Jun 2019, 11:59

There is no non-linear material capability in Elmer.

Kevin

mika
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Joined: 15 Sep 2009, 07:44

Re: HOW TO MAKE NON-LINEAR ANALYSIS OF MATERIAL IN ELMER??I

Post by mika » 12 Jun 2019, 18:13

Well, it is not completely impossible to model nonlinear material behaviour if one is able to write a user-defined material model in the form of an Abaqus user subroutine (UMAT). The documentation of the finite elasticity solver provides some information on this possibility. The combination of Elmer and UMAT has been utilized for example in the thesis

http://URN.fi/URN:NBN:fi:tty-201810032372

But it is true that currently Elmer doesn't come with ready implementations of material nonlinearity.

Best regards,
Mika

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