本文采用三维有限元模型分析了荷载作用下自上而下裂缝尖端的应力强度因子，并与二维平面应变模型分析的结果进行比较。
In this thesis, the stress intensity factors of top-down cracks caused by loading are calculated using three dimensional finite element model and compared to the results of plane strain model.
建立了二维轮胎橡胶材料的有限元模型，用应变能密度这个参数模拟了试样承受单向拉伸时裂纹的扩展方向。
A 2-d finite element model of tire-rubber was established to simulate the crack growth of the sample under simple tension, by using the strain energy density parameter.
采用二维非线性有限元分析方法，研究了六库水电站RCC纵向围堰防渗墙的防渗效果和应力应变状态。
The stress state and seepage of anti-seepage walls under longitudinal RCC coffer dam of Linkuhydropower station are studied using 2d non-linear finite element method.
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