This chapter discusses new material models or changes to existing material models. It provides an overview of the following enhancements:

• “Low-density foam model,” Section 7.1

• “Non-Newtonian viscous shear behavior for equation of state models,” Section 7.2

• “Arrhenius shift function for thermo-rheologically simple (TRS) materials,” Section 7.3

• “Damage evolution models for ductile materials,” Section 7.4

• “Finite-strain viscoelasticity,” Section 7.5

• “Usability improvements for the ideal gas equation of state,” Section 7.6

• “Scaling the yield stress for the plastic part of elastic-plastic materials,” Section 7.7

• “Use of nonphysical material properties in dynamic analyses,” Section 7.8