I'm trying to study the viscoelastic behavior of epoxy through indentation. But for modeling in ABAQUS, I cannot use plastic definition along with viscoelastic parameters. So I was wondering if I can model the loading behavior as hyperelastic for the simulation to run successfully. I believe my last option is UMAT, but before that I want to check hyperelastic defintion. My intention is to explore the hold time data.

Thanks in advance for your inputs.