• The type of hardening law is defined with the HARDENING MODEL command line, other hardening commands then define the specific shape of that hardening curve.

• The hardening modulus for a linear hardening model is defined with the HARDENING MODULUS command line.

• The hardening constant for a power law hardening model is defined with the HARDENING CONSTANT command line.

• The hardening exponent for a power law hardening model is defined with the HARDENING EXPONENT command line.

• The Luders strain for a power law hardening model is defined with the LUDERS STRAIN command line.

• The hardening function for a user defined hardening model is defined with the HARDENING FUNCTION command line.

• The shape of the spline for the spline based hardening is defined by the CUBIC SPLINE TYPE, CARDINAL PARAMETER, KNOT EQPS, and KNOT STRESS command lines.