A continuum damage mechanics (CDM) based constitutive model has been developed to describe elastic, plastic and damage behavior of porous rocks. The pressure sensitive inelastic deformation of porous rocks together with their damage mechanisms are studied for drained and undrained conditions. Fracture mechanics of microcrack andmicro-void nucleation and their coalescence are incorporated into t...

The paper reviews models for inelastic deformation processes preceding earthquake rupture in brittle, natural rock masses. The discussion is organized around three types of failure models: (i) localization bifurcations, whereby a uniform or nearly uniform pattern of deformation gives way to highly localized deformations within a fault zone; (ii) non-homogeneous deformations due to an inclusion-...

Recent investigations on tsunami generation from submarine mass failures show that one of the most important factors influencing the source characteristics of the wave is the initial acceleration of the failure itself. In a number of these studies, a translational slide is modeled as a rigid body sliding down an inclined plane and basal resistance is neglected. In this paper, a similar rigid bo...

Non-coaxial response refers to the deviation between directions of principal stress and plastic strain increment. In this paper, an extended hypoplastic model is proposed based on anisotropic critical state theory, describe non-coaxial sand subjected both monotonic loading rotation axis. A fabric tensor that characterizes internal structure introduced into a model, reflect effect anisotropy dil...