Abstract
The post-buckling behaviour of thin-walled beams of open section subjected to an axial compressive load and resting on a Winkler-type continuous elastic foundation is discussed. We assume the strains to be small and elastic, shear deformations and the in-plane cross-sectional deformations to be negligible. The post-buckling paths are determined for simply supproted and clamped beams with constant cross-section. The points of bifurcation in both cases are found to be symmetric and stable for various values of warping and foundation parameters.
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