Structural Analysis Wiki

Technical Terms Used in Dlubal Software

The Dlubal Structural Analysis Wiki explains technical terms used in structural analysis and design. The terms are given in alphabetical order and are usually used in Dlubal Software.

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W Warping Torsion

Drilling with restrained axial displacement or forced torsion is called warping torsion.

Warping torsion occurs in the cross-sections that are not free to warp, if the warping of the end cross-sections is restrained. The non-free-to-warp cross-sections include especially the open thin-walled steel cross-sections. On the other hand, a circle, a circular ring and a square hollow cross-section with the constant wall thickness, are free-to-warp cross-sections.

The warping torsion analysis can be carried out using the RF‑/STEEL Warping Torsion module extension of RF‑/STEEL EC3 as well as using the RF‑/FE‑LTB add‑on module. It is possible to perform lateral‑torsional (flexural-torsional) buckling analyses of members according to the second‑order theory with 7 degrees of freedom and application of imperfections with regard to mode shapes.


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