基于细观力学的脆性岩石通用损伤模型

岩石是在形成和运移过程中经过各种改造的地质产物，因而具有复杂的非线性特征。这种特征在微观上主要表现为岩石结构的非连续性和不确定性，很难用传统的、基于线性分析基础之上的方法来描述。基于细观力学分析和通过尺度变化（宏观－细观－宏观）来考虑岩石材料体积表征单元内单个裂纹的贡献，提出了一个脆性岩石通用损伤模型。该模型根据对损伤变量或内变量的不同定义（如：宏观量和微观量），可以表现为唯象模型和细观力学模型；通过对损伤变量或内变量的阶数的不同定义（如：标量、矢量和张量），此模型亦可以表达为各向同性或各向异性损伤模型。

A General Damage Model Based on Micromechanical Approach

The rock is a geologic history product with a variable recast during its generation and transport,and has a complex nonlinear property.The property from the microscopic view manifests mainly discontinuity and uncertainty for the rock's structure,which is difficult to express with the traditional method and the linear analysis.The authors proposed a general damage model for brittle rock based on micromechanics analysis and considered the contribution of single crack on the representative volume element(RVE) ...