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?


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.


Diagram Nonlinear material

Contact us

Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.

+49 9673 9203 0

RFEM Other
RF-MAT NL 5.xx

Add-on Module

Consideration of nonlinear material laws

Price of First License
1,300.00 USD