Phase field modeling of hydraulic fracture in heterogeneous media with interfacial damage

Julien Yvonnet (1) , Liang Xia (1, 2) , Siavash Ghabezloo (2)

1 MSME - Laboratoire de Modélisation et Simulation Multi Echelle
2 navier umr 8205 - Laboratoire Navier

In this work, we propose a numerical framework for modeling hydraulic fracturing or cra- cking in saturated porous media, taking into account : (a) the presence of heterogeneities ; (b) interfacial damage between the inclusions and the matrix ; (c) the possibility to define the microstructures in the form of regular grids of voxels e.g. as obtained from experimental imaging techniques. The developed numerical framework employs the phase field method with a regularized description of both bulk and interface cracks, extended in a fully hydro-mechanical context. We present applications in both 2D and 3D complex hydro-mechanical microcracking initiation and propagation in voxel-based models of hete- rogeneous media with interfacial damage between the inclusions and the matrix.

Mots clés: fracture; phase field; heterogeneous materials; hydro-mechanical coupling; interfaces

Domaines: Mécanique des structures [physics.class-ph]

Julien Yvonnet, Liang Xia, Siavash Ghabezloo. Phase field modeling of hydraulic fracture in heterogeneous media with interfacial damage. 13e colloque national en calcul des structures, Université Paris-Saclay, May 2017, Giens, Var, France. ⟨hal-01926882⟩