Error when using nonlinear material and stiffness modification

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1

Hello,

I’m using a multilayer thickness element with stiffness reduction activated at RFEM 6:

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image1067×634 29 KB

When all materials are linear, the calculation works normally, but when I use the ‘Nonlinear Material Behavior’ add-on and set one of the layers to use a material of type “Orthotropic | Plastic (Surfaces)” I get a calculation error:

image
image863×203 7.62 KB

If I deactivate the stiffness reduction when using the nonlinear material it also works, but I would like to use the nonlinear material and the stiffness reduction, is that possible?
Please find attached the rf6 file:

Patchtest_orthotropes_Membranwandelement_2.rf6 (2,1,MB)

Best regards,

Pedro Guimarães.

3

Hello Pedro,

thank you for your message and for providing the detailed description together with the model file.

We are currently reviewing this specific case internally, and our development team is investigating the behavior you described.

As soon as we have a result or further information, we will get back to you immediately.

Thank you for your patience.

Best regards,
Eike Hartmann