Brittle Damage in Initially Anisotropic Materials: A Model Accounting for the Induced Anisotropy and Unilateral Effects

Publisher: Trans Tech Publications

E-ISSN: 1662-7482|2015|784|173-178

ISSN: 1660-9336

Source: Applied Mechanics and Materials, Vol.2015, Iss.784, 2015-09, pp. : 173-178

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Abstract

A new micromechanical modelling approach for brittle damage in initially orthotropic materials is presented. The proposed strain-based energy formulation allows to derive a fully anisotropic multilinear model for microcracked materials with arbitrary oriented defects. The thermodynamics framework provides a standard procedure for the damage evolution law. The new model explicitly accounts for the interaction between primary and induced anisotropies. Moreover, the very challenging issue of opening-closure effects (unilateral behavior) is addressed in this framework.