FAQ 003604 | What is the difference between the materials Isotropic Plastic 1D and Isotropic Nonlinear Elastic 1D?

Easily learn how to work with the Dlubal Software programs

  • Dlubal Software | Videos


First Steps with RFEM

First steps

We provide hints and tips to help you get started with the basic program RFEM.



Stine Mareike Effler

Please accept Marketing Cookies to watch this video.


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


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.


Dlubal FAQ Material model Nonlinear Plastic Material Calculation Behavior Plastic 1D Nonlinear 1D Frequently Asked Question FAQ about Dlubal Question and Answer about Dlubal


Write Comment...

Write Comment...

  • Views 300x
  • Updated 11/05/2020

Contact us

Do you have any questions about our products or need advice on selecting the products needed for your projects?
Contact us via our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.

(267) 702-2815