Author(s)

A. S. Botta, W. S. Venturini & A. Benallal

Abstract

A BEM implicit formulation applied to damage mechanics models A. S. ~otta', W. S. ~enturini' & A. ~ e n a l l a l ~ IS& Carlos School oJ'Engineering, University of $60 Paulo, Brazil 2 Laboratoire de Me'canique et Technologie, ENS de Cachan/CNRS/Universit2 Paris 6, France, Abstract In this work, the implicit BEM formulation, initially developed in the context of plasticity analysis is extended to incorporate damage mechanics models. The algebraic equations adopted for the formulation are obtained either using displacement or traction equations, for the boundary nodes, and stress (or strain) equations for the internal nodes. The consistent tangent operator has been obtained for situations: the conventional non-linear BEM system of equations. 1 Introduction Analysis of non-linear problems by means of BEM can be found since the end of seventies [l].The non-linear formulations used during a quite long time were all based on the initial stress and strain procedures, where a constant matrix scheme i

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