An analysis of the effect of holes patterns on coupled instability of perforated thin-walled members
Keywords:rack columns, perforated thin-walled member, interactive buckling, mode decomposition, shell finite element analysis, generalised beam theory
The buckling behaviour of vertical steel pallet rack columns is greatly influenced by the distribution of perforations punched continuously along their length. To study the influence of the holes patterns on the elastic coupled instabilities of thinwalled members, this paper uses an original modal identification method (based on the Generalised Beam Theory) which is able to provide the pure buckling modes participation (of global, distortional, local nature) in a general eigenvalue buckling mode given by the shell Finite Element Analysis.
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