Analytical and numerical solutions for shear mechanical behaviors of structural plane  

作　　者：何忠明 熊喆怡 胡庆国 杨明 

机构地区：[1]Key Laboratory of Special Environment Road Engineering of Hunan Province ,Changsha University of Science & Technology [2]School of Traffic and Transportation Engineering,Changsha University of Science & Technology [3]School of Resources & Safety Engineering,Central South University [4]School of Earth Science and Information Physics,Central South University

出　　处：《Journal of Central South University》2014年第7期2944-2949,共6页中南大学学报（英文版）

基　　金：Project(50878212) supported by National Natural Science Foundation of China;Project(1298011-2) supported by the Funding of Scientific Research and Technology Development Projects of Guangxi Province,China;Project(12JJ6052) supported by Natural Science Foundation of Hunan Province,China;Project(kfj120402) supported Open Fund of Key Laboratory of Special Environment Road Engineering of Hunan Province(Changsha University of Science&Technology),China;Project(13C1010) supported by the Research Foundation of Education Bureau of Hunan Province,China

摘　　要：The original descriptive model of shear stress and shear displacement only reflects the stress deformation characteristics of plastic structural plane.The index model was revised and piecewise index model was built to describe the stress deformation characteristics of plastic structural plane and brittle structural plane.The relation of stress and strain to the failure mode of structural plane considering the effect of its shape was investigated,and a model which could reflect the relation between undulate angle and shear strength was built.The result indicates that structural plane presents nonlinear characteristics,specifically,the value of undulate angle,as well as corresponding shear strength,becomes larger as the normal stress decreases.The original descriptive model of shear stress and shear displacement only reflects the stress deformation characteristics of plastic structural plane.The index model was revised and piecewise index model was built to describe the stress deformation characteristics of plastic structural plane and brittle structural plane.The relation of stress and strain to the failure mode of structural plane considering the effect of its shape was investigated,and a model which could reflect the relation between undulate angle and shear strength was built.The result indicates that structural plane presents nonlinear characteristics,specifically,the value of undulate angle,as well as corresponding shear strength,becomes larger as the normal stress decreases.

关 键 词：structural plane shear mechanical behavior model failure mode nonlinear characteristics numerical analysis 

分 类 号：O347[理学—固体力学]