...：扩展有限元法； 虚节点法； ALOF软件； 断裂力学； 三维疲劳裂纹扩展 [gap=1428]Key words： extended finite element method; virtual node method; ALOF software; fracture mechanics; 3D fatigue crack propa..
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扩展有限元法是近年来出现的一种在常规有限元框架内求解不连续问题的数值方法。
The extended finite element method (XFEM) is a numerical method for modeling discontinuities within a standard finite element framework.
基于扩展有限元法的粘聚裂纹模型为准脆性材料的开裂过程模拟提供了一种有效途径。
The present cohesive crack model based on the XFEM provides a useful way to simulate cracking in quasi-brittle materials.
应用BP -神经网络法对数学模型进行修正，建立有限元数值模拟方法补充剔除数据并对数学模型适用范围进行扩展。
The mathematical models are amended by BP neural network algorithm, and method of finite element numerical simulation is used to compensate the removal data and extend the applied range.
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