MICROMECHANICAL DAMAGE MODEL FOR ROCKS AND CONCRETE UNDER TENSILE AND SHEAR LOADINGS
Based on the analysis of the deformation field in an infinite isotropic elastic matrix with an embedded elliptic crack and subjected to far field loading condition of tensile stress and shear stress,the corresponding additional compliance tensor induced by an open microcrack in a representative volume element is derived.The description for the deformation of a RVE with randomly oriented microcracks is obtained by making use of the Taylors approach and a proper probability density function.A micro-macro damage model for rocks and concrete under tensile and shear loadings based on the deformation of embedded elliptic crack is introduced.
elliptic microcrack micromechanics damage model
Z.J.Ren X.H.Peng
Department of Engineering Mechanics,Chongqing University,Chongqing 400044,China
国际会议
第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)
安徽黄山
英文
36-40
2008-06-03（万方平台首次上网日期，不代表论文的发表时间）