【摘要】 在不可逆热力学框架内建立了岩土材料的正交异性损伤塑性耦合宏观唯象本构理论·　主要结果有 :1)给出了耦合的塑性和损伤的演化律 ;2 )从对含裂纹单元的细观分析入手 ,通过均匀化 (Homogenization)处理 ,将损伤引入到Mohr_Coulomb条件中·　模型同时考虑了损伤对剪切强度及摩擦角的影响 ,扩容现象则通过损伤应变来计算更多还原

【Abstract】 Constitutive theory of plasticity coupled with orthotropic damage for geomaterials was established in the framework of irreversible thermodynamics. Prime results include: 1) evolution laws are presented for coupled evolution of plasticity and orthotropic damage; 2) the orthotropic damage tensor is introduced into the Mohr_Coulomb criterion through homogenization. Both the degradation of shear strength and degradation of friction angle caused by damage are included in this model. The dilatancy is calculated with the so_called damage strain.更多还原