The objective of this paper is to present a study, both numerical and experimental, of the local post-buckling behaviour of cold-formed steel rack columns, with particular attention paid to the influence of the column local boundary conditions. First, spline finite strip analyses are employed to investigate (ⅰ) the influence of fixed and longitudinally rigid end conditions on the column linear stability and post-buckling (local plate and distortional) behaviours and (ⅱ) the occurrence of local mode interaction. Finally, a test program, presently under way is briefly reported. The test set-up, procedure and data acquisition system are described and a few experimental results (DM behaviour) are presented and compared with numerical ones.
展开▼
