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Elastoplastic damage modelling the mechanical behaviour of rock-like materials considering confining pressure dependency

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2013
auteur(s) Zhou Hui; Bian Hanbing; Jia Yun; Shao Jian-Fu
journal (abréviation) Mechanics Research Communications (Mech Res Comm)
volume (numéro) 53
  
pages 1 – 8
résumé In this paper, the effect of confining pressure on the mechanical behavior of rock-like materials, such as concrete, is studied by using a coupled elastoplastic damage model. Damage mechanism is coupled, in different manners, with two plastic flow mechanisms: plastic shear mechanism developed under low confining pressure and plastic pore collapse mechanism observed under high confinement. The proposed model is applied to study a series of laboratory tests performed under extremely low to very high confining pressure, up to 650 MPa. The numerical predictions of proposed model are in good agreement with the experimental results.
mots clés Elasto-plasticity; Damage; Concrete; High confining pressure; Pore collapse
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