Cohesive Mohr-Coulomb interface effects on the strength criterion of materials with granular-based microstructure

Z. He (1, 2) , Luc Dormieux (3) , Éric Lemarchand (2) , D. Kondo (4)

1 LML - Laboratoire de Mécanique de Lille - FRE 3723
2 navier umr 8205 - Laboratoire Navier
3 multi-échelle - Modélisation et expérimentation multi-échelle pour les solides hétérogènes
4 DALEMBERT - Institut Jean le Rond d'Alembert

In the framework of micromechanics approaches the aim of this paper is to investigate cohesive Mohr-Coulomb interface effects on the strength criterion of materials with granular-based microstructure. This is achieved by extending the limit stress states to the context of non linear homogenisation. Strength criteria formulation is analytically determined as a function of the material pore volume fraction and the local strength properties of the interfaces. For increasing values of the interfacial internal friction coefficient, a transition from an elliptic to a hyperbolic shape of the strength criterion is identified.© 2013 Elsevier Masson SAS. All rights reserved.

Domaines: Sciences de l'ingénieur [physics]; Matériaux

Z. He, Luc Dormieux, Éric Lemarchand, D. Kondo. Cohesive Mohr-Coulomb interface effects on the strength criterion of materials with granular-based microstructure. European Journal of Mechanics - A/Solids, 2013, 42 (-), pp.430-440. ⟨10.1016/j.euromechsol.2013.06.009⟩. ⟨hal-00946078⟩