In this paper, a coupling model of Beam element finite element boundary element Infinite boundary element for the analysis of structure foundation system in frequency domain is established.
采用梁单元、有限元、边界元、无限边界元相结合的方法，建立了频域中结构-半无限地基系统的分析模型。
The paper evaluates the limitations that semielliptical surface crack in a shaft is simplified to a unilateral crack in a finite boundary plane and a cross straight line crack in a semi infinite body.
评价了将轴表面半椭圆裂纹简化为有限边界平板的单边裂纹问题和半无限体表面穿透直线裂纹问题来处理的局限性。
In the numerical simulation of the wave equation, to develop an absorbing boundary condition in the finite domain is a very important problem.
在地震波传播的数值模拟中，在有限区域建立吸收边界条件是一个很重要的问题。
The mixed method of boundary element and fractal finite element is adopted to solve the cracked structure-acoustic coupling problems.
应用分配形有限元和边界元相结合的方法于含裂纹的结构声相互作用问题。
After a cell is broken, the stress adjustments of the other cells in the system are obtained by finite element method using the broken cell as inner boundary.
当单元破裂后，将破裂单元作为内部边界，利用有限元方法计算由于这个单元破裂对系统其他单元造成的应力调整。
Conclusion: Cable and gap elements are reasonable boundary conditions of the finite element model of mandible, which will improve the similarity of the model.
结论：采用柔索约束、间隙元作为下颌骨及髁突的边界条件，可提高模型的相似性，为下颌骨的受力分析奠定基础。
The stress and deformation of crankshaft are calculated by finite element method with six load boundary conditions and three displacement boundary conditions.
分别采用六种载荷边界条件和三种位移边界条件对曲轴应力和变形进行了有限元分析；
The concept of extended boundary node was presented. By using finite difference method, the solution of the gained difference equations was given and simulated by computer.
由此提出了扩展边界节点的概念，并使用有限差分法，对所得到的差分方程组进行了计算机求解及模拟。
Some finite iterative result of the two-point boundary value problem sequence is taken as a suboptimal control law of the system.
从而将两点边值问题解序列的有限次迭代结果作为系统的次优控制律。
The emphasis is placed upon the numerical methods, including finite difference method, finite element method, boundary element method and so on.
着重讨论了包括有限差分法、有限元法和边界元法等在内的数值方法。
We report some new results about nonlinear differential equations on a finite discrete segment with periodic boundary conditions.
还得到了有限离散区间上非线性微分方程在周期边值条件下的一些新结果。
The finite element model and result are given. The influence on displacement of different finite element model "s lateral boundary and the cavities" radius are discussed.
给出了有限元模型和计算结果，讨论了有限元横向边界不同和孔径大小不同的情况下对位移的影响。
Finally, the boundary treatment of the compact finite difference scheme is discussed and compared with the numerical result with periodic boundary conditions.
最后讨论了有限差分紧致格式的边界处理问题，并与用周期边界条件计算的结果进行了比较。
At present, the common numerical methods are finite difference, finite element, boundary element, integration equation and transmission line method.
目前，解决这类问题的数值方法主要有有限差分法、有限元法、边界元法、积分方程法、传输线法等。
According to the measured results, a reasonable boundary condition can be set up and then the field distribution can be calculated by using the finite element method.
按测量结果，确定了一个合理的边界条件，用有限元法模拟计算了沿轴场分布。
The analysis show that the finite difference method based on the free boundary problem and the Laplace method based on the free boundary problem are two good numerical methods.
数值实验结果表明：基于自由边界问题的有限差分法和基于自由边界问题的拉普拉斯变换是两种良好的数值方法。
The proposed finite difference boundary condition expands the scope of application of FDTD to scattering problems of objects with a finite acoustic impedance but without tangential stress.
导出了水中透声目标表面边界条件的时域有限差分(FDTD)表达形式，将FDTD在水声学中的应用范围扩大到无切应力的有限声阻抗目标的散射问题。
Compared with Finite Element Method and Finite Difference Method, Boundary Integral Equation Method is computationally more efficient.
与有限元法和有限差分法相比，该方法具有更高的计算效率。
The main numerical modelling techniques for vibro-acoustic analysis are based on element based method, such as the finite element and boundary element method.
分析振动-声的数值方法主要是基于单元的方法，如有限元和边界元。
A thorough study has been made in respect of dividing of space finite elements, treatment of boundary conditions and equivalent nodal load of bending and reverse loads, etc.
在空间网块的划分、边界条件的处理、弯曲与扭转载荷的等效结点载荷的处理等方面，做了深入细致的探讨。
Boundary element method and finite element method will realize to disperse solving domain in a probe function.
除了对于狭长形状的解域处，边界元法的求解精度一般高于有限元法。
This paper analyses three-dimensional stress distributions of the stud anchor chain by the theory of finite element and boundary element.
本文应用三维边界元法和三维有限元法对有挡锚链进行了三维应力分析，并将其结果与电测实验数据作了比较，吻合得很好。
In this paper, the numerical methods, issues and development for aeroacoustics, were described, including finite difference scheme, boundary conditions and nonlinear acoustics and shocks.
本文介绍了气动声学数值计算的方法和有关的问题、边界条件的处理以及计算非线性声波的数值方法和进展。
The comparison and analysis on the finite element method and the boundary element method of high-pressure pervious lining tunnel have been conducted.
主要进行了有限元法高压透水衬砌隧洞和边界元法高压透水衬砌隧洞的比较分析。
The first is establishing artificial boundary problem, because of simulating the infinite field from the finite field in which intercept from the infinite field, so we introduce artificial boundary.
用有限元模拟波动问题，其首要问题是人工边界的设置问题，由于要从无限域中截取有限区域来模拟无限域，所以要引入人工边界。
In this paper, coupling methods of finite element method and boundary element method are expounded, and the coupling methods of linear elastic problems for underground engineering are tried.
本文阐述有限元与边界元耦合的基本方法，并对地下工程中线弹性问题的耦合法进行了尝试。
The stress concentration analysis was done by the finite element method and boundary element method. The fatigue strength and the strength under the static load were calculated.
对螺纹槽管进行了疲劳强度计算，并采用边界元和有限元法对螺纹槽管的应力集中进行了数值分析及静载强度计算。
The stress concentration analysis was done by the finite element method and boundary element method. The fatigue strength and the strength under the static load were calculated.
对螺纹槽管进行了疲劳强度计算，并采用边界元和有限元法对螺纹槽管的应力集中进行了数值分析及静载强度计算。
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