Nonlinear Analysis of Thin Sections in Compression

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Abstract
The finite strip method developed by Cheung is extended to include the nonlinear response of imperfect plate strips under axial compression. Local buckling and postbuckling phenomena are included in the formulation. The convergence and accuracy of the method is tested against accepted solutions for uniformly compressed plates with different boundary conditions. Studies are made of the nonlinear response of box and I-section columns. The application of the method to the interaction of local and Euler buckling of straight columns with imperfect plates is presented.

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