Hello,

Abaqus requires the defined modulus to be declared either "instantaneous" or "long-term" for the *ELASTIC, *HYPERELASTIC, and *HYPERFOAM cards. Does instantaneous modulus assume that at any given point in time, the modulus is the defined modulus (i.e. E(t)=E_defined) while the long-term modulus is a sort of average modulus?

Thanks,
Steve