Analysis of localization of Mohr-Coulomb strength law with damage effect
The damage critical curved surface is derived considering the related effect of isotropic damage and degradation of cohesion and internal friction angle of Mohr-Coulomb strength law.The characteristics of axial stress-displacement curve,axial-lateral displacement curve,networks of shear bands and the change with degree of damage,confining pressure,poissons ratio are investigated numerically by monitoring the stress-displacement values in the process of deformation of samples under plane strain and different initial conditions.The rule of the dependence of elastic-plastic response of localization and non-uniqueness of the solution of equation is discussed.The orientation angle of shear band is derived considering the related effect of isotropic damage and degradation of cohesion and internal friction angle of Mohr-Coulomb strength law,is contrasted to the measured value of the orientation angle of localization.It is shown that Peak strength residual strength,and its axial displacement depends on confiningpressure.
Bifurcation shear band damage orientation angle Mohr-Coulomb strength law
Wang Zhongchang Yang Qing
School of Civil and Safety Engineering, Dalian Jiaotong University, Dalian, Liaoning 116028, China S School of Civil Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
国际会议
上海
英文
14-14
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）