运用损伤力学以及断裂力学理论，定义了岩体损伤张量、有效应力张量、损伤应变等，建立了损伤演化方程，从而建立了多裂隙岩体的损伤断裂模型。

Using the theory of damage mechanics and fracture mechanics, the damage tensor, effective stress tensor and damage strain, etc. of rock mass are defined, propagation equation of damage is developed.

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本论文立足于对混凝土材料特性的认识，提出一个进行混凝土损伤与断裂过程模拟的细观数值模型。

This paper is based on the understand of the concrete material. The mathematic model to study the process of concretes damage and fracture is being put forward.

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滑动裂纹模型被广泛应用于岩石类材料压剪断裂分析及损伤分析。

The sliding crack model has been widely applied in the damage and fracture analysis of the rock-like materials.

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