When performing an analysis with STEEL Warping Torsion, I get tension forces instead of compression forces in a column. Where is the problem?

Answer

Check the preset support in warping torsion: the supports hold on to the respective set of members at the start and end nodes in the local x‑direction (see figure). Thus, the support 'clings' to the upper support and tension force is calculated and no stability problem is possibly found.

Release the support at the column head in the local x‑direction.

Keywords

steel structure stability warping torsion second-order analysis support nodal support design stability analysis

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