Nonlinear Structural Materials Module

Nonlinear Elastic Material Model in the Membrane Interface

The family of Nonlinear Elastic Material models, which are already available in the Solid Mechanics interface, have been added to the Membrane interface. It is now also possible to define your own material model using the User defined option. These material models are mainly intended for small to moderate strains.

Viscoelasticity, Plasticity, Creep, and Viscoplasticity Added to the Membrane Interface

The Membrane interface now includes the effects of Viscoelasticity, Plasticity, Creep, and Viscoplasticity. These options can be used together with the Linear Elastic and the Nonlinear Elastic material models:

Viscoelasticity models:

  • Generalized Maxwell
  • Standard Linear Solid
  • Kelvin-Voigt

Plasticity models:

  • von Mises, Tresca, Hill, or User defined yield function
  • Associated or non-associated hardening
  • Isotropic or kinematic hardening
  • Linear or user-defined hardening function

Creep models:

  • Norton
  • Norton-Bailey
  • Garofalo
  • Nabarro-Herring
  • Coble
  • Weertman
  • Potential
  • Volumetric
  • Deviatoric
  • User defined

Viscoplastic models:

  • Anand

User interface where you can add subnodes to the Linear Elastic Material node to include the effects of Viscoelasticity, Plasticity, Creep, and Viscoplasticity User interface where you can add subnodes to the Linear Elastic Material node to include the effects of Viscoelasticity, Plasticity, Creep, and Viscoplasticity

User interface where you can add subnodes to the Linear Elastic Material node to include the effects of Viscoelasticity, Plasticity, Creep, and Viscoplasticity

Plasticity in the Truss Interface

The possibility to model elastoplastic materials has been added to the Truss interface as well. The functionality is essentially the same as in the Solid Mechanics and Membrane interfaces.