Influence of boundary condition on channel section column behaviour
Keywords:torsional lateral buckling, boundary condition, pure bending, cold formed steel sections, Finite Element Method analysis
The FEM-based, numerical study of the influence of the boundary conditions on distorsional lateral buckling phenomena during bending of cold formed steel bars with different channel sections have been performed. Beams with lip channel crosssection, channel cross-section and top-hat cross-section had been analysed. Six different boundary conditions were examined for each cross-section to check their influence on buckling load with corresponding buckling mode and describe the thin-walled beam behaviour. The proposed model of boundary conditions has been assumed the same as in other papers, where the obtained results have been compared with those obtained based on other analytical-numerical methods or within experimental tests.
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