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Simplified lower bound limit analysis of transversely loaded thin plates using generalised yield criteria

Hamilton, R. and Boyle, James (2002) Simplified lower bound limit analysis of transversely loaded thin plates using generalised yield criteria. Thin-Walled Structures, 40 (6). pp. 503-522. ISSN 0263-8231

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Abstract

In this paper a simple method of deriving lower bound limit loads for thin plates is presented. This method is based on the method of elastic compensation, an iterative elastic technique, which has recently been extended to allow the analysis of structures using thin shell finite element analysis using generalised yield criteria. Here the method is modified to allow analysis of plates, including the effects of transverse shear. The elastic compensation method, combined with generalised yield criteria, is implemented using the finite element numerical analysis technique. Convergence studies are carried out and limit loads are obtained for a range of geometries, boundary conditions and loading. The calculated limit loads are compared with results available in the literature and with new elasto-plastic results and show that the method can be used to quickly obtain practical results.