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What is the difference between the materials Isotropic Plastic 1D and Isotropic Nonlinear Elastic 1D?

Answer

The difference between the two material models is as follows:

  • In the Isotropic Nonlinear Elastic 1D material model, no plastic deformations are considered. This means that the material returns to its initial state after the load relief.
  • In the case of the Isotropic Plastic 1D material model, however, the plastic deformation is taken into account.

For both material models, you can define the nonlinear properties in an additional dialog box. When entering data by means of a diagram, it is possible for both models to define a distribution after the last step.

For the 'Isotropic Nonlinear Elastic 1D' material model, an antimetric input of the stress-strain diagram is possible (different for the positive and negative range), while for the 'Isotropic Plastic 1D' model, only symmetric input is allowed.

Keywords

Material model Nonlinear Plastic Material Calculation Behavior Plastic 1D Nonlinear 1D

Reference

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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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