FAQ 004831 | I cannot find any reason why no plastic design is performed for the cross-section of Class 1. Normally, it is necessary to select the check box for elastic design.

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Question

I cannot find any reason why no plastic design is performed for a class 1 cross-section. Normally, you have to select the check box for the elastic design.

Answer

In principle, the program always tries to perform a plastic design for cross-section classes 1 and 2. However, if torsion is additionally contained, the design can only be performed elastically. This is due to the interaction conditions according to EN 1993-1-1 clause 6.2.9, which do not include any torsional component.

For this reason, the "Cross-Section Design and Torsion" setting is available in the details of the add-on module. By adjusting the limit shear stress for the cross-section designs, you can also neglect the torsion under your own responsibility.

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Dlubal FAQ Torsion Interaction Elastic Plastic Frequently Asked Question FAQ about Dlubal Question and Answer about Dlubal

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  • Updated 12/11/2020

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