Classical metal plasticity

• Select Isotropic to model hardening where the yield surface changes size uniformly in all directions such that the yield stress increases (or decreases) in all stress directions as plastic straining occurs. See Using an isotropic hardening model to define classical metal plasticity for detailed instructions.

• Select Kinematic to model the cyclic loading of a material with a constant rate of hardening. See Using a linear kinematic cyclic hardening model to define classical metal plasticity for detailed instructions.

• Select Johnson-Cook to model isotropic hardening in Abaqus/Explicit, where the yield stress is provided as an analytical function of equivalent plastic strain, strain rate, and temperature. See Using the Johnson-Cook hardening model to define classical metal plasticity for detailed instructions.

• Select User to described the yield stress for isotropic hardening through user subroutine UHARD. See Specifying user subroutine UHARD to define classical metal plasticity for detailed instructions.

• Select Combined to model the cyclic loading of a material with nonlinear isotropic/kinematic hardening. See Using a nonlinear isotropic/kinematic cyclic hardening model to define classical metal plasticity for detailed instructions.

For general information on selecting a Hardening option, see Hardening.