Use the Porous Plasticity subnode to define the properties of a plasticity model for a porous material.

The Yield function F defines the limit of the elastic regime F(σ, σys) ≤ 0.

Select a Yield function F for the porous plasticity criterion — Shima-Oyane, Gurson, Gurson-Tvergaard-Needleman, Fleck-Kuhn-McMeeking, or FKM-GTN.

For Shima-Oyane enter the following data:

For Gurson enter the following data:

For Gurson-Tvergaard-Needleman enter the following data:

For Fleck-Kuhn-McMeeking enter the following data:

For FKM-GTN enter the following data:

Each of the material properties can either be defined obtained From material, or as User defined. In the latter case, enter a value or an expression.

 Solid Mechanics>Linear Elastic Material>Porous Plasticity
 Solid Mechanics>Nonlinear Elastic Material>Porous Plasticity
 Membrane>Linear Elastic Material>Porous Plasticity
 Membrane>Nonlinear Elastic Material>Porous Plasticity

Physics tab with Linear Elastic Material or Nonlinear Elastic Material node selected in the model tree:
Attributes>Porous Plasticity