The wave finite element method was used to study the dynamic response under impact loading in a gradient non-homogeneous plate with a crack.
为了研究梯度非均匀有限板中裂纹动态响应问题，用波动有限元的方法研究了梯度非均匀板中裂纹在冲击载荷作用下的动态响应。
Finite element method is used in the study of nozzle damping of instable combustion in a solid rocket motor. Wave decline method is used in the experimental research.
应用有限单元法研究固体火箭发动机不稳定燃烧中的喷管阻尼，并用波衰减对比法进行了试验研究。
The irregular distribution of the wave load along the erect riser makes the computation of equivalent wave nodal force difficult when applying Finite Element Method to analyze risers strength.
波浪荷载沿垂直立管的分布是不规则的，这对工程中用有限元法分析立管强度进行等效波浪结点力的计算带来困难。
On the basis of the finite element solution to elastodynamic problems, we propose a new method of finite element elastic wave migration.
本文在弹性动力学问题的有限单元解的基础上，提出了一种弹性波偏移的新方法——有限单元法弹性波偏移。
In this paper, the finite and infinite element method in numerical analysis for wave forces of three dimensional problem is examined.
本文研究了三维情况波浪力数值分析中的有限元-无限元方法。
In this paper, for solving the parameter problem of two dimensional wave equation, the method of Finite Element and the Pulse Spectrum Technique, i. e. the iterative process are used.
本文针对求解二维波动方程的参数问题，利用有限元方法把波动方程反问题转化为有限元反问题，并利用脉冲谱技术，即一个迭代过程进行求解。
Finite element method las been practically applied to the forward modeling of elastic wave. But its shortcomings, such as large storage needed and slow calculation, remain.
用有限元法做弹性波正演模型计算已进入实用阶段，但有限元法所要求的大存储量和计算速度慢的缺点依然存在。
Finite element method is an useful tool for modeling seismic wave in complex medium, it simulates seismic wave propagation quite realistically and displays seismic wave fields in quite detailed way.
有限元法是复杂介质地震模拟的有力工具，它能比较客观地反映地震波的传播过程，比较细致地再现地震图像。
The finite element method was used to calculate elastic wave propagation in the medium.
本文采用有限元素法计算弹性波在介质中的传播。
The reflection phase property and surface wave dispersion are analyzed using finite element method.
用有限元方法分析了其反射相位特性及表面波传输特性。
The finite element method has been widely used in analysing wave propagation problems. Which degree of accuracy such an analysis can be obtained?
有限元法用于分析波的传播问题已日益广泛，它可能达到的程度已成为现在十分关心的课题。
According to wave motion theory, finite element mesh size satisfying the needs of engineering calculating precision is relevant to the upper limit of frequency range of random (response) problems.
根据波动理论，满足随机响应工程计算精度要求的有限元网格大小与待求高频随机响应问题的频率范围上限有关。
A local transmitting boundary is combined with a lumped-mass finite element technique to form a mechanical model simulating the near field steady wave motion.
本文将局部透射边界和集中质量有限元技术结合起来形成一个模拟稳态近场波动的力学模型。
In this paper, a discrete local transmitting boundary is combined with a lumped-mass finite element technique for simulating steady wave motion in the viscoelastic layered medium.
本文将离散的局部透射边界与集中质量有限元方法相结合，用于模拟粘弹性成层介质中的稳态波动。
The load analysis and calculation under wave action of this platform is developed, on this base, a three dimensional finite element strength analysis for main structural body is conducted.
展开了对该平台在波浪作用下载荷的分析计算，在此基础上对主体结构进行了三维有限元强度分析。
Vibration and traveling wave stress analysis of rotating bevel gears is performed using annular finite element.
提供了一种使用半解析环形棱柱有限元求解盘形锥齿轮行波振动的方法。
Based on the finite element method and the theory of mode superposition, a quasi-static calculation method for the seismic response of rigid pile composite foundation under SV wave is presented.
针对竖向传播的SV波作用下刚性桩复合地基的动力反应，在振型分解反应谱法的理论基础上，提出一种基于有限元分析的拟静力方法。
The computer program which can be used for deter - mining wave forces on cylinders with arbitrary section is written by using the finite-infinite element method proposed in this paper.
应用本文推荐的有限元一无限元方法，设计了计算任意截面形状柱体所受波浪力的计算机程序。
The numerical method of coupled boundary integral equation and finite element has been used to compute the forces of wave diffraction and radiation on large two dimensional objects.
本文中采用边界积分方程和有限元耦合的数值方法，计算了二维波浪绕射和辐射问题。
The use of infinite elements for modelling wave radiation eliminates the effects of artificial reflection of waves from finite element boundary, therefore the computational accuracy can be assured.
无穷元的应用消除了波在有限元边界上人为的反射效应，保证了数值解答的计算精度；
Finite Element Technique based on Rayleigh-Ritz idea is used to solve wave propagation in non-homogeneous medium with variable velocities.
为求解变速不均匀介质中波的传播问题，使用了利用瑞雷-里兹法的有限元技术。
In this paper, a finite element method with lumped mass formulation is applied to analyse the transient SH wave propagation in an elastic half-space with a dipping layer.
本文采用一种类似于差分方法的集中质量有限元模型和人工边界透射理论分析倾斜成层弹性半空间中瞬态SH波的近场波动问题。
A finite element artificial transmitting boundary method is presented for electromagnetic wave scattering from a perfectly conducting circular cylinder and a number of concave objects.
采用有限元-人工透射边界法求出平面波在无限长圆柱上的散射近场，并与解析解进行比较，进而对几种凹面体电磁波散射近场求解。
This paper mainly describes how to get the numerical solution of the scalar wave equation by finite element method.
本文研究用有限元法求标量波动方程的数值解。
The structure of the lid is designed according to the wave penetrating theory and is optimized by using finite element method.
结构设计依据电磁透波原理，并应用有限元进行结构优化。
In the research work, finite element analyses is adopted to study the velocity wave and the secondary flow of nonlinear pulsatile flow in the S-shaped curved arteries.
本课题采用有限元分析方法研究非线性脉搏波在S型血管中的速度波，二次流。
Based on the results of numerical experiments, the principle of determining the dimension of the finite element meshes of the soil analysis model under traveling wave excitations is made.
结合数值试验，给出了行波输入下沿地震波传输方向上的土层有限元网格划分原则。
Based on the acoustic wave equation and structural motion equation, the vibration characteristics from the fluid loaded stiffened cylindrical double shell are studied by using finite element method.
基于流体的波动方程和结构的动力方程，利用有限元方法研究了考虑流固耦合时的双层加肋圆柱壳体的振动特性。
Based on the finite element method (FEM), the negative-refraction (NR) property is demonstrated when the electromagnetic wave penetrates through free space into such SNG lamellar structure.
基于有限元方法，验证了当电磁波穿过此结构时的负折射性质。
Based on the finite element method (FEM), the negative-refraction (NR) property is demonstrated when the electromagnetic wave penetrates through free space into such SNG lamellar structure.
基于有限元方法，验证了当电磁波穿过此结构时的负折射性质。
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