Soft polymer foams, and some other materials, often exhibit different stiffnesses in uniaxial tension and compression. Most material models cannot predict this type of behavior, but there are some excellent choices for this.
Summary of the key new features of version 6.1.0 of MCalibration and PolyUMod.
PolyUMod is a library of advanced user material models for Abaqus, ANSYS, LS-DYNA, MSC Marc, and COMSOL.
The Bergstrom-Boyce (BB) model is a powerful model for elastomers. This post graphically demonstrates what the material parameters mean.
Summary of the TNV model from the PolyUMod library. The TNV model can accurately predict the mechanical response of almost all polymers.
