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When the displacement equation is applied on one of the crack surfaces and the traction equation on the other, general mixed\u2010mode crack problems can be solved with a single\u2010region formulation. In order to avoid collocation at crack tips, crack kinks and crack\u2010edge corners, both crack surfaces are discretized with discontinuous quadratic boundary elements. The elastoplastic behaviour is modelled through the use of an approximation for the plastic component of the strain tensor on the region expected to yield. This region is discretized with internal quadratic, quadrilateral and\/or triangular cells. This formulation was implemented for two\u2010dimensional domains only, although there is no theoretical or numerical limitation to its application to three\u2010dimensional ones. A centre\u2010cracked plate and a slant edge\u2010cracked plate subjected to tensile load are analysed and the results are compared with others available in the literature. <jats:italic>J<\/jats:italic>\u2010type integrals are calculated.<\/jats:p>","DOI":"10.1002\/nme.1620380210","type":"journal-article","created":{"date-parts":[[2005,8,8]],"date-time":"2005-08-08T21:29:35Z","timestamp":1123536575000},"page":"315-333","source":"Crossref","is-referenced-by-count":53,"title":["The dual boundary element formulation for elastoplastic fracture mechanics"],"prefix":"10.1002","volume":"38","author":[{"given":"V.","family":"Leit\u00e3o","sequence":"first","affiliation":[]},{"given":"M. H.","family":"Aliabadi","sequence":"additional","affiliation":[]},{"given":"D. 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