FAQ 003559 EN

Helpful Questions & Answers

  • Frequently Asked Questions (FAQs)

It is not possible to enter a nonlinear stress-strain curve. The diagram is initially displayed correctly, but then an error message appears saying that the positive values have to be only entered in ascending order. How can I avoid this message?

Answer

When using a diagram in the program, the first strain is always given (initial strain). It depends on the resulting modulus of elasticity and cannot be controlled directly. For this, you can use a trick in the program and adjust the first strain to a desired value anyway. To do this, you have to calculate the initial modulus of elasticity and enter it in the material parameter. In your case, it would be possible to use the following procedure.

Keywords

Diagram Nonlinear material

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  • Updated 5 April 2021

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RFEM
RF-MAT NL

Add-on Module

Consideration of nonlinear material laws

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