nonlinear elastic parameters

[fifiariff]

Hi guys,

How to input the nonlinear elastic parameters (stress and strain) of single phase in Abaqus?

Tq.

 

[FEA way]

Nonlinear elasticity typically means hyperelasticity. If you have stress-strain data from tests, you can import it to Abaqus and let it calculate constants for different hyperelastic material models (choose the one that best fits your test data).