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Material model question

rrakos
8-Gravel

Material model question

Hello,

I am using a hyperelastic material model. To check the simulation, I defined a monitor point to see the stress in the function of strain. I think, the defined matarial curve and the stress-strain curve from monitor point should be same. But the result shows quite interesting curve:

curve_question.png

The curve from result gives lower stress value compared to the defined material model.

What is the reason?

Thanks

Roland

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