![]() The developed FE models produced excellent predictions of the ultimate strength of the specimens obtained from experimental tests. The effects of initial geometric imperfections of the specimens measured by a specially designed set-up with laser displacement transducers were also taken into account. The numerical models incorporated the non-linear stress-strain behaviour of CFS material and enhanced properties of cold-worked corner regions obtained from coupon tests. Detailed nonlinear FE models were developed and validated against a total of 36 axial compression tests on CFS plain and lipped channel columns with pin-ended boundary conditions. ![]() This paper aims to study the interaction of local and overall flexural buckling in cold-formed steel (CFS) channels under axial compression.
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