Abstract
Abstract: This article investigates the numerical and theoreticalstudy on the b uc kl i ng behaviour of cold formed steel lipped angle columns under pinned end conditions. The sections were analyzed using ABAQUS software. Geometric andmaterial non linearities were included in the model. Parametric study was conducted by varying the thickness and length of the specimens. Three types of sections were chosen for this study based on the geometric limitations for the prequalified sections provided in the North American Specifications for Cold formed steel structures (AISI S100 – 2007). The Analysis was conducted on 24 specimens. All the specimens were failed under the combination of Local and Distortional Buckling. Theoretical study was carried out using Direct Strength Method as per North American Specifications for Cold formed steel structures. The Numerical results were compared with the Direct Strength method. Based on the comparison of results suitable recommendations were suggested in the direct strength method.
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