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Multi-scale modeling for inelastic behavior of a cohesive geomaterial

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2009
auteur(s) Jiang Tao; Abou-Chakra Guery Ariane; Kondo Djimédo; Shao Jian-Fu
journal (abréviation) Mechanics Research Communications (Mech Res Comm)
volume (numéro) 36 (6)
  
pages 673 – 681
résumé A micromechanical model is proposed for plastic deformation and damage in hard clay called argillite. The argillite is considered as a two phase composite with the clay matrix and mineral inclusions. The clay matrix is described by an elastoplastic damage model while the inclusions are considered as linear elastic media. The macroscopic inelastic behavior of material is determined using Hill’s incremental method and a Mori-Tanaka scheme for the linear comparison composite. The validity of the proposed model is verified through comparisons with experimental data for various laboratory tests. Influences of microscopic deformation mechanisms on macroscopic behavior are discussed.
mots clés Micromechanics; homogenization; multi-scale modeling; plasticity; damage; geomaterials; rocks
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