Abstract
The chapter describes the finite element analysis of cold-formed steel equal lipped angle compression members. An accurate finite element model is developed in the chapter. The initial local and overall geometric imperfections are incorporated in the model. The effect of residual stresses on the buckling behavior is also investigated in the chapter. The material nonlinearities of flat and corner portions of angle sections are considered in the analysis. The nonlinear finite element model is verified against experimental results. An extensive parametric study is carried out using the finite element model to study the effects of cross section geometries on the strength and behavior of cold-formed steel lipped angle columns. The column strengths predicted by the finite element model are compared with the design strengths calculated using the North American Specification and Australian/New Zealand Standard for cold-formed steel structures, as well as compared with the design strengths obtained from proposed design rules. It is shown that the proposed design strengths accurately predicted the column strengths for nonslender lipped angle columns.
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