Poroelasticity of a micro-heterogeneous material saturated by two immiscible fluids

Siavash Ghabezloo (1) , Sahar Hemmati (2, 3)

1 cermes - Géotechnique
2 IFSTTAR/GER - Département Géotechnique, Eau et Risques
3 MSSMat - Laboratoire de mécanique des sols, structures et matériaux

The anisotropic poroelasticity framework presented by Aichi and Tokunaga (Int. J. Rock Mech. Min. Sci. 48(4) (2011) 580-584) for a porous material saturated by two immiscible fluids is generalized for micro-heterogeneous materials by introducing one additional poroelastic parameter. This framework is based on Coussy's thermodynamic framework, but is re-written using material parameters that are easier to evaluate experimentally. The presented generalization permits using the constitutive relations for modelling the behaviour of geomaterials with a heterogeneous solid phase composed of several constituents. The constitutive relations are given also for special cases of isotropic porous material saturated by two immiscible fluids or by one fluid.

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Siavash Ghabezloo, Sahar Hemmati. Poroelasticity of a micro-heterogeneous material saturated by two immiscible fluids. International Journal of Rock Mechanics and Mining Sciences, 2011, 48 (8), pp.1376-1379. ⟨10.1016/j.ijrmms.2011.10.003⟩. ⟨hal-00689726⟩