Creo Simulate > Modeling Structure and Thermal Problems > Properties > Materials > Extra Reference for Materials > Elastoplastic Materials > Elastoplastic Materials
Elastoplastic Materials
Metals like steel exhibit elastic behavior for small loads. When the load is further increased the material can undergo plastic deformation. Such materials are called elastoplastic materials.
Creo Simulate uses isotropic hardening laws to define elastoplastic materials. Hardening laws are rules that describe the relationship between the flow stress and the effective strain for a material. For hardening materials, the yield surface evolves in space. The yield surface expands in all directions in proportion to the strain increment.
To define an elastoplastic material select Isotropic as the symmetry type and select Elastoplastic as the Stress-Strain Response on the Material Definition dialog box.
Use one of the following methods to define an elastoplastic material:
Using Test Data—Select the Define By Tests check box and click Edit. The Plastic Hardening Law Definition dialog box opens. Specify stress and strain values from test data to find the best-fit curve for a material model.
Using Material Constants—Clear the Define By Tests check box and select one of the following isotropic hardening laws. The material constants displayed change according to your selection:
Perfect Plasticity
Linear Hardening
Power Law
Exponential Law
You must also specify the Coefficient of Thermal Softening and the Tensile Yield Stress for an elastoplastic material.
Return to Isotropic.