有限元方法

探讨了有限元方法和CAD技术在先进制造技术中的应用发展趋势。

The application trend of the FEM and CAD technology in the advanced manufacturing technology are discussed .

用电路方法、有限元方法和亚网格FDTD方法相结合的混合方法对这种电磁泄漏进行了模拟分析和比较。

The electromagnetic leakages of the two cases above are simulated and compared by using a hybrid method which is formed by the combination of circuit , FEM and subcell-FDTD methods .

Poisson方程的组合杂交有限元方法

Combined Hybrid Finite Element Methods for the Poisson Equation

开发了理论模型以验证有限元方法用于X射线光刻掩模刻蚀过程数值仿真的正确性。

An analytical model is developed to verify the numerical simulation for X-ray lithography mask etching process using finite element ( FE ) .

研究结果表明：ANSYS软件及有限元方法在岩石圈动力学数值模拟领域是一个非常有效的分析工具，具有非常广阔的应用前景。

Our study indicates that , ANSYS is a very effective analytic tool for the numerical simulation field of the lithosphere dynamics .

重调和方程Dirichlet问题的混合有限元方法

The Mixed Finite Element Method for Solving the Dirichlet Problem of Biharmonic Equation

基态Li原子的Hartree-Fock有限元方法计算

Solution of the ground state of lithium by Hartree - Fock finite - element method

利用Hamilton原理和有限元方法推导了电流变夹层梁的动力学方程。

Based on the Hamilton 's principle and finite element methodFEM the equations of motion of beam are derived .

用接触有限元方法详细研究后发现，每一个基本阶段又可细分为若干小阶段，例如B1、B2。

Finer stages can be found in every basic stage by studying contact FEA in details .

而且，还采用ANSYS有限元方法对单层钢框架结构及半柱模型进行非线性静力分析，验证了提出的简化模型的正确性。

Nonlinear static analysis to single-story steel frame structure and semi-column model is analyzed by ANSYS program . Consequently , it is proved that simplified method is correct .

由于该方法中的形函数满足Delta函数性质，因此本质边界条件可以像传统的有限元方法一样很容易施加。

The formulated shape functions have the property of delta function and the essential boundary conditions can be applied as easy as in conventional finite element method ( FEM ) .

采用非线性有限元方法（ANSYS程序）分析普通梁柱刚性连接和全焊狗骨式连接并进行比较，可得出一些有益于工程的结论。

General beam-column stiffness connections and the full-welded dog skeleton connection is analyzed and compared by Nonlinear finite element analysis method ( ANSYS method ) and draw some conclusions .

文中结合数值计算和有限元方法（FEM）计算，对系统的波前校正进行了仿真，证明这种方法具有更好的波前重构精度。

Through numerical method and finite element method ( FEM ), wave-front reconstruction is emulated , and it is demonstrated that the method has a better precision for wave-front reconstruction .

利用有限元方法数值模拟了单晶硅（Si）、铜（Cu）、钨（W）、氧化铍（BeO）等镜体材料的热畸变特性。

The thermal distortions of mirror substrates with such materials as silicon , copper , tungsten and beryllium oxide are calculated and analyzed by use of finite element methods .

用有限元方法解决复杂边界问题的热力学问题非常有效，而有限元分析软件ANSYS能使得用有限元法解决问题更加方便。

Finite element method ( FEM ) is a very useful method to resolve complicated boundary condition problem . With FEM analysis software ANSYS , it is easy to solve the problem with FEM .

采用非结构、非均匀的网格和有限元方法，通过求解Navier-Stokes方程，对90°分叉管的流动进行了并行数值模拟的研究。

The flow in 90 ° bifurcation pipe are simulated by solving the Navier-Stokes numerical equation with finite element method , which using two ways to generate grids .

然后在时域上采用Wilson－θ法进行逐步积分，得到一种分析二维饱和孔隙介质地震反应的三场有限元方法。

The Wilson θ integration method is applied to the matrix equations above in time domain , thus , the response to earthquake of two dimensional fluid saturated media is acquired .

目的应用非线性有限元方法模拟碳纤维复合材料（CFRP）加固钢筋混凝土（RC）梁承载过程中结构的载荷效应（挠度、应力应变和承载力）。

The load effects of carbon fiber reinforced polymers ( CFRP ) strengthened reinforced concrete ( RC ) beams are simulated with the nonlinear finite element method when the structures bear the load .

以ANSYS为平台，利用有限元方法对矿用牙轮钻头牙轮齿孔过盈配合进行了有限元计算，并分析了牙齿和齿孔应力分布规律及过盈量对其的影响。

The over-fixation of mine-used rotary drill bit tooth hole was calculated by the finite element method on ANSYS , also analyzed the distribution laws of tooth hole and tooth stress field and influence of the over-fixation .

应用任意拉格朗日&欧拉有限元方法分析大型U形渡槽结构中流体的大幅晃动问题；针对不同的水位，研究渡槽结构在谐波激励和地震作用下的振动反应。

Arbitrary Lagrangian-Eulerian method is used to study large sloshing of water in large scale U-shaped aqueduct , and to discuss the vibration responses of aqueduct structure with different water levels under sinusoidal loads and earthquake action .

利用有限元方法和并行计算方式，对在重力条件下KDP晶体各种装夹方式的结构变形进行力学仿真分析。

The finite element method and parallel computing method was used to carry out the dynamics simulation analysis for construe transmutation of KDF crystal orientations under gravity .

二阶ETG有限元方法在低雷诺数流动模拟中的应用

Application of ETG finite element method in numerical simulation of incompressible viscous flow of low Reynolds number

方法基于志愿者CT医学图像，用表面重建的方法对人体上呼吸道进行三维重建并用有限元方法对整个腔体中的气体流动进行数值模拟及分析。

Method Based on CT medical images of volunteers , a 3D model of upper airway was reconstructed by the method of surface rendering . And numerical simulation of the airflow in the whole cavity was performed by using the finite elements method ( FEM ) .

本文采用三维有限元方法分析了荷载作用下自上而下裂缝尖端的应力强度因子，并采用Paris公式分析了自上而下裂缝的疲劳扩展规律与疲劳寿命。

In this thesis , the stress intensity factors of top-down cracks caused by load are calculated using three dimensional finite element method , and the fatigue propagation rules and fatigue lives of top-down cracks are analyzed using Paris Law .

在有限元方法中使用等参元，EFGM与FEM的耦合方法在处理不可压缩问题时仍然存在自锁现象。Trefftz法中的自锁现象及变量减缩法

However , when the isoparametric elements are used in FEM , the coupled method still exhibits locking . LOCKING PROBLEM AND VARIABLE REDUCING PROCEDURE IN THE TREFFTZ METHOD

同时，利用蜂窝结构的代表胞元模型，用常规的有限元方法（FEM）模拟计算出相应的等效弹性参数。

_ ( s ) of a regular honeycomb structure with various relative densities . Simultaneously , we use the model of representative unit cell ( RUC ) to simulate the equivalent mechanical properties of the honeycomb by conventional finite element method ( FEM ) .

利用ALE（ArbitraryLagrange-Euler）有限元方法，以速度和压力为基本变量，数值模拟了圆筒形贮腔中不可压粘性三维液体的大幅晃动问题。

Three dimension large amplitude liquid sloshing in cylindrical tank was numerically simulated by using AL E ( Arbitrary Lagrange - Euler ) finite element method , where the pressure and velocity are used as principle variables .

采用试验和有限元方法研究了热处理制度对金属基短纤维复合材料（MMC）蠕变性能的影响，同时考虑了2种不同热处理制度和1种铸造状态。

Experiments and finite element analysis have been carried out to study the influence of heat treatment on the stress creep behavior of a short fiber reinforced metal matrix composite ( MMC ) . Two heat treatments together with cast state ( no heat treatment ) were considered .

结果表明二阶全展开ETG有限元方法有较好的稳定性和较高的精度，在计算温度场和流场的时间演化过程方面有一定优点。

All the above shows that the second order and full extension ETG finite element method features a relatively fair stability and precision , and has its definite merits when used to evaluate the time evolution process of temperature and flow fields .

用有限元方法详细分析并计算了HT7超导托卡马克等离子体实验装置上低杂波天线壁上的涡流分布、感应磁场位形和天线所受电磁力。

It analyzes the eddy current , the distribution of the induced magnetic field and the electromagnetic force on the lower hybrid wave launching antenna on the superconducting tokamak HT 7 by using finite element circuit method .