About the sensitivity to hydrostatic pressure of Mohr-Coulomb criterion with circular failure envelope, dedicated to ductile materials

摘要

Knowledge of material properties, in particular under hydrostatic pressure, is essential, both to select the proper material for a specific engineering application and to predict accurately its behaviour using mathematical models. Many criteria were proposed to describe the behaviour of the various engineering materials under complex state of stress. Both materials and criteria can be sensitive or insensitive to hydrostatic pressure. This work demonstrates that modified Mohr-Coulomb criterion, with circular failure envelope, applied for ductile materials, is insensitive to hydrostatic pressure.