... defects down to the length scale of interest. The strain softening, dilatant behaviour of the rock mass. The simulation of post-failure response of rock and support. The modelling framework discussed in this paper attempts to satisfy these requirements. It consists of a constitutive model...

... characteristics of rock. Based on the above analysis and the damage model of micro units, a damage constitutive model is developed under the triaxial compression condition. The proposed model has a simple function form and distinct physical meaning parameters, which can be used to describe both the pre-peak...

... Abstract Determination of the complete stress-strain characteristics of rock is an essential issue in rock mechanics and plays an important role in solving excavation problems. To reflect the whole damaging process, a three-dimensional damage-softening statistical constitutive model for rock...

... with the development of plastic strain and this is modeled by the lower movement of the two state lines. Triaxial slide-hold-slide tests are simulated by the proposed model and applicability of the model is discussed. Reservoir Characterization modeling axial strain constitutive model Yasuhara structural...

... assumptions and to pick up one or several factors he thinks the most important and takes them as his concern while other factors are neglected. For instant, constitutive model is always divided into two parts, one for saturated material and another is for unsaturated. Thermal and viscoplastic effects...

..., the hardening stage and the softening stage of the bond spring. Two failure modes, tensile failure of the normal spring and shear failure of the shear spring, are considered. A preliminary study on failure behavior of DLSM model with the developed constitutive model is performed. Uniaxial tensile...

... classic burger-mc model slider reservoir geomechanics Gioda deviatoric stress time-dependent behaviour constitutive model sterpi Reservoir Characterization criterion viscoplastic unit rock mass tunnel burger-mc model deformation creep model strain rate equation An Elasto-Viscoplastic...

... in the research of damaged zone revolution of surrounding rock in underground engineering. relation Venant body triaxial compression test irreversible deformation Upstream Oil & Gas constitutive equation underground engineering constitutive model deformation Completion Installation...

... Abstract: Large time dependent convergences of a tunnel excavated across a carboniferous rock mass are analyzed. These delayed convergences were simulated using an elasto-viscoplastic constitutive model that included a rock strength degradation process. The 3D numerical simulation...

... ABSTRACT: A new constitutive model for the shear behavior of rough rock joints is proposed. Within the framework of the classical elasto-plastic theories, the model incorporates the dilation and surface degradation which are distinct features of rough rock joints, The elastic behavior...

... loads In engineering. This paper reports a computational constitutive modeling method based on adaptive constitutive finite element method(FEM) and the simplified yet unified disturbed state constitutive(DSC) model for highly nonlinear deformations in the structures of geomaterials with softening...

... ABSTRACT: Based on equivalent energy theory, the anisotropy damage constitutive model of jointed rock mass is set up with joint surface closing and friction considered, the flexibility tensor and its increments are deduced. The model is applied to analyze the stability of permanent high ship...

... ABSTRACT: setting up the constitutive model of rock and soil is essentially an inverse problem, which belongs to the model Identification in inverse problem theory. Since the artificial neural network (ANN) has powerful nonlinear mapping and self-learning abilities, it provides a new approach...

... computing computer parallel environment program library daemon visual parallel computing communication coefficient constitutive model Visual parallel computing in intelligent rock and soil mechanics FENG XIATING, LI SHAOJUN, ZHANG YOU LIANG & YANG CHENGXIANG Institute of Rock and Soil Mechanics...