Abstract

A method of analysis for the occurrence of localized thermoplastic strain, in a material under plane strain constraint, is studied based on the Body Force Method(BFM). BFM is an indirect boundary type method for elastic stress analysis based on the principle of superposition. Any inelastic strain can be expressed by the embedded force doublets in BFM. That is, in the analysis, a continuously embedded force doublets into the elastic body are used to express the presence of plastic strain. A simplified model of welding-induced plasticity is treated as a numerical example of the present method

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