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Hyperelastic Material properties ERROR IN ELEMENT FORMULATION

Hyperelastic Material properties ERROR IN ELEMENT FORMULATION

Hyperelastic Material properties ERROR IN ELEMENT FORMULATION

(OP)
Hi everyone,
In order to get a good model, I need to create hyperelastic material properties for one of my parts on Ansys Mechanical.
I have an uniaxial test data and I make an hyperelastic curve fitting with the polynomial fonction (2nd order).
When I solve this problem, it stops with this error :
"ERROR IN ELEMENT FORMULATION"
I think that the material model is the cause of this error because I changed it to an isotropic model and it worked fine but when I use the hyperleastic model, I get this error and I do not know how to get rid of it.
Could you help me to fix this ?
Thank you.

Sincerely
Thibault

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