Author(s)

Y. Ochiai and T. Kobayashi

Abstract

Elastoplastic problems can be easily solved by the boundary element method. However, even if the BEM is used, domain integrals are necessary for the elastoplastic problem. The ordinary multiple-reciprocity boundary element method can not solve the elasto-plastic problem, because the distribution of initial stress or initial strain can not be given analytically. This paper shows that the elastoplastic problem can be solved by the improved multiple-reciprocity boundary element method without a domain integral. In this method, the initial stress is interpolated by using a boundary integral equation. A new computer program is developed and applied to several elastoplastic problems. 1 Introduction If the internal cells for domain integrals are used,

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