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1·Based on Continuum damage Mechanics, a general two stage model for accumulation of fatigue damage in composite materials is presented.

基于连续介质损伤力学的概念，建立了疲劳损伤演化两阶段模型。

2·Based on the continuum damage mechanics, the fatigue damage behavior of a P355NL1 steel specimen with notch under cyclic load was discussed.

采用损伤力学理论，研究了P 355nl1钢含沟槽轴对称试件在交变载荷作用下的疲劳损伤破坏过程。

3·An anisotropic damage model for concrete subjected to compressive fatigue load is developed based on continuum damage mechanics and the concept of boundary surface.

基于边界面概念和损伤力学理论，建立了混凝土受压各向异性损伤模型。

4·The strain gradient enhanced damage model based on strain gradient theory and continuum damage mechanics is established and applied to forecasting the localized damage in rock material.

本文提出基于应变梯度的损伤模型，并用于材料局部化损伤模拟预测中。

5·The detailed expressions of the damage effect functions are investigated by micromechanics, which enables us to relate the continuum damage mechanics with the microscopic damage mechanics.

损伤效应函数的具体形式可由细观力学解答确定，从而使连续损伤力学与细观损伤力学有机结合在一起。

6·The rock damage model and the damage-coupling model suited to analyze the whole process of water jet breaking rock were established with continuum damage mechanics and micro damage mechanics.

运用连续损伤力学和细观损伤力学理论，建立了适用于水射流破岩全过程分析的岩石损伤模型以及宏细观损伤的耦合模式。