par Massart, Thierry,Jacques ;Selvadurai, Patrick A.P.S.
Référence International journal of rock mechanics and mining sciences, 70, page (593-604)
Publication Publié, 2014-07-31
Article révisé par les pairs
Résumé : A computational homogenization technique is used to investigate the role of dilatancy on the stress-induced permeability evolution in a granitic material. A representative volume element incorporating the heterogeneous fabric of the material is combined with a fine-scale interfacial decohesion model to account for microcracking. A material model that incorporates dilatancy is used to assess the influence of dilatant processes at the fine scale on the averaged mechanical behaviour and on permeability evolution, based on the opening of microcracks. The influence of the stress states on the evolution of the spatially averaged permeability obtained from simulations is examined and compared with experimental results available in the literature. It is shown that the dilatancy-dependent permeability evolution can be successfully modelled by the averaging approach.