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Is it possible to include several cross-sections with different materials in the flexural buckling design or how can I apply several cross-sections to each other?

Answer

It is possible to use DuenQ to model any cross-sections and carry out a stress analysis within DuenQ or, for example, in RSTAB with STEEL.

The FE-LTB module can be used for the stability analysis of general cross-sections. Modules such as STEEL EC3 depend on the respective standard, which may cause problems for user-defined cross-sections. In this case, it is often the case that they are not covered by the standard and the stability analysis is only valid for certain cross-sections.

For cross-sections consisting of several materials (hybrid cross-sections), you can also work with FE-LTB. The stiffness of such a cross-section created in DuenQ can be displayed in RFEM, but there are no possibilities for stress calculation. The approach would therefore be as follows:

1. Create cross-section in DuenQ Creating a cross-section in DuenQ

2. Load cross-section into RFEM and set the reference material correctly

3. Use FE-LTB to calculate the internal forces

4. Perform stress analysis in DuenQ

Keywords

Multi-part cross-sections Hybrid cross-sections

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RFEM Main Program
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