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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
应用推荐