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 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.
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；
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.
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。
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.
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。
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.
用这些模型预测裂纹扩展角时，参数都归结为裂尖处的应力强度因子，而应力强度因子可以用有限元方法求得的。
The outlined models for estimation of crack extension angles rely purely on the stress intensity factors at the crack tip which can be determined by finite element procedures.
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.
在此方法基础上建立了扩展厢式车厢体展开状态下有限元模型，并对其进行了强度分析。
On the basis of the method, the FEA (finite element analysis) model of the van body in extendable work condition is established and the structure strength analysis of the van body is proceeded.
利用三维有限元模拟和动态响应试验对点焊接头疲劳裂纹萌生和扩展特性进行了研究。
Fatigue crack characteristics are investigated based on the dynamic response simulation by finite element and the dynamic response experiments for tensile-shear spot-welded specimens.
并利用三维动态有限元模拟了点焊接头疲劳裂纹扩展过程中频率变化特性。
Then the characteristics of frequency variation during the fatigue crack propagation process are simulated by three - dimensional dynamic finite element analysis.
本文中我们采用扩展混合有限元方法和混合体积元方法数值模拟了二阶拟线性抛物型积分微分方程和二阶拟线性抛物问题。
In this paper , we consider the Expanded Mixed Finite Element Method and mixed covolume method for the quasilinear parabolic integro-differential equation and quasilinear parabolic problem.
编制了有限元程序CCGC - 1以模拟计算高温材料蠕变裂纹的扩展。
A finite element program CCGC-1 is compiled to simulate the creep crack growth rate in materials working at elevated temperature.
通过有限元分析方法模拟简单剪切橡胶件粘结处裂纹扩展时撕裂能与裂纹尺寸的关系。
The variation of tearing energy with crack size was calculated for the bonded crack of simple shear rubber using non-linear finite element analysis.
将该解析元与有限元相结合，构成半解析的有限元法，可求解任意几何形状和载荷的平面裂纹应力强度因子及扩展问题。
The new analytical element can be implemented into FEM program systems to solve for stress intensity factor and deal with crack propagation problems for plane cracks with arbitrary shapes and loads.
给出了一种利用有限元技术模拟周期性张力载荷作用下孔边角裂纹扩展过程的方法。
A method is proposed to simulate the fatigue crack growth by finite element technique for corner cracks under cyclic tension loading.
以神经网络为基本工具，利用其强大的非线性映射能力，并结合有限元法动力分析成果，为预测在复合射孔条件下岩层裂缝扩展深度提供了一条新的途径。
By using ANN and its powerful nonlinear mapping ability and combining production of FEM dynamic analysis, a new way to predicting terrane crack depth of complex fire hole is offered.
采用AN -SYS有限元软件对环状V型缺口悬臂件进行了有限元分析，对不同的加载方式影响断裂的扩展进行了初步探讨。
The paper analyzes cantilever with 'v' shaping groove in FEM methods of ANSYS, then discusses the effect of crack growth in different loading ways.
并用有限元分析结果解释了一个实际产品——卡车用橡胶垫在疲劳实验过程中裂纹扩展的情况。
The situation of crack growth for a real component, rubber pad used in turck, during fatigue testing were explained.
将该解析元与有限元相结合，构成半解析的有限元法，可求解任意几何形状和载荷的基于线性内聚力模型的平面裂纹扩展问题。
The new analytical element can be implemented into FEM program systems to solve crack propagation for plane problems with arbitrary shapes and loads.
综合泄漏流量的有限元计算结果与扩展卡尔曼滤波器的估计结果，与实测结果相比较，进一步完善理论分析方法。
The theoretical analysis is verified and improved by comparing the results of FEM calculation and EKF estimation with experimental measurement.
破坏单元网格消去法解决有限元模拟裂纹扩展的难题，给出的模型和方法可付诸于实践。
The failure elements deleting method solves the difficult problem of FEM to simulate propagation. The model and method may be valid in practical projects.
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.
将该方法加以拓展，建立了含有不同尺寸缺陷的粉末盘断裂力学有限元模型，并对其裂纹扩展寿命进行了评估。
The finite element model could be developed to predict the propagation life of PM turbine disk containing defects with different sizes.
将该方法加以拓展，建立了含有不同尺寸缺陷的粉末盘断裂力学有限元模型，并对其裂纹扩展寿命进行了评估。
The finite element model could be developed to predict the propagation life of PM turbine disk containing defects with different sizes.
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