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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
In the framework of irreversible thermodynamics, the macroscopic phenomenological constitutive theory of plasticity coupling of orthotropic damage of geomaterials is established. The main results are as follows: 1) The evolutionary laws of plasticity and damage of coupling are given; 2) Mesoscopic analysis starts with the introduction of damage into the Mohr_Coulomb condition by Homogenization treatment. The model also considers the effect of damage on the shear strength and the friction angle. The dilatation is calculated from the strain at strain