The extended finite element method (XFEM) is a numerical method for modeling discontinuities within a standard finite element framework.
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。
A new numerical method, extended finite element method (XFEM), which may conveniently simulate static and dynamic cracks, was introduced several years ago.
扩展有限元是近几年出现的一种可方便模拟静态、动态裂纹的数值方法。
A discrete crack model based on the extended finite element method (XFEM) was used to describe the nonlinear fracture of concrete gravity DAMS during earthquakes.
为了模拟重力坝在强震作用下的破坏过程，利用扩展有限元框架下的分离裂纹模型描述混凝土中的裂纹扩展。
The stress intensity factors can be evaluated without post-processing with the improved extended finite element method, so it is convenient to analyze the dynamic discontinuities.
改进的扩展有限元不需要经过后处理可以直接求得应力强度因子，从而为动态不连续问题的分析提供了便利。
This method established the fracture propagation inversion model firstly, based on law of fracture propagation and extended finite element method, by using annealing simulation method.
首先，基于裂缝扩展规律，采用扩展有限元方法，利用模拟退火技术，建立裂缝扩展反演模拟模型；
By introducing the FEM, the mixed method is extended to perform finite element reliability analysis.
通过引入有限元方法，混合分析法可适用于结构可靠度问题。
The equivalent age method is extended successfully to the concrete cracking control in structures through the use of the finite element program ANSYS.
与有限元软件一起使用，等效龄期方法还可以运用于混凝土结构的温度裂缝预测与控制中；
The discontinuous finite element method is extended to solve the direct problem, and then the conjugate gradient method is used to solve the inverse problem by optimizing the objective function.
正问题采用间断有限元法求解，反问题的解则在正问题的基础上通过共轭梯度法得到。
The discontinuous finite element method is extended to solve the direct problem, and then the conjugate gradient method is used to solve the inverse problem by optimizing the objective function.
正问题采用间断有限元法求解，反问题的解则在正问题的基础上通过共轭梯度法得到。
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