We use the artificial boundary condition method to overcome this difficulty.
我们使用人工边界条件方法来克服这一困难。
We consider the problem of constructing artificial boundary conditions for the wave equation.
讨论了求解无限区域内波动方程的人工边界条件问题。
Such problems as artificial boundary and seismic input mechanism involved in the interaction study are.
重点对相互作用研究中的人工边界及地震输入机理问题进行了详尽的论述。
The SH numerical example shows that this new artificial boundary element has a multi-directional transmitting property.
SH波数值分析表明本文有限元模型具有多向波动透射能力。
A reasonable spurious parameter of artificial boundary is also proposed, which lays down the base for FEM numerical simulation.
提出了合理的人工边界反射系数公式，为有限元模型提供了理论基础。
The article summarizes the dynamic analysis method and the artificial boundary and damping of numerical dynamic analysis in previous.
本文对以往数值动力时程分析过程中的动力分析方法、人工边界、阻尼等问题进行了总结。
Among of many artificial boundary conditions, the transmitting boundary conditions are the best because they can absorb more reflection wave.
在众多的人工边界条件中，透射边界以其良好的吸收性成为人工边界条件的首选。
For the electrode with large aspect ratios, the calculation efficiency will be improved rapidly if the rectangular artificial boundary is adopted.
对于长宽比值较大的窄形电极问题，如采用人工边界为矩形的渐近边界条件，将会使计算效率显著提高。
Local artificial boundary of seismic analysis is widely used in time-domain finite element method for its good feasibility and high numerical stability.
地震分析中的局部人工边界由于具有易于实现、稳定性较好的特点，目前在时域有限元法中得到广泛应用。
In this paper, we investigate the artificial boundary conditions and its numerical methods based on natural boundary reduction for hyperbolic initial boundary value problems.
本文研究双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。
In numerical wave simulation of finite difference for acoustic wave equation, due to the limitation of computer model, there inevitably exists strong artificial boundary reflection.
在声波波动方程有限差分波场数值模拟中，由于计算模型的限制，导致很强的人为边界反射的产生。
Part I, the artificial boundary condition and its numerical methods based on natural boundary reduction for hyperbolic initial boundary value problems on unbounded domains is studied.
第一部分，研究无界外区域双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。
Mechanism of the oscillation instability is then illuminated in frequency domain by amplification at the artificial boundary and multi-reflection of wave motion in a finite discrete model.
根据波在人工边界的放大效应和在有限离散模型中多次反射的概念在频域内阐明了这一常见的振荡失稳的机制。
Under the viscous-spring artificial boundary condition, the input method of seismis wave from the artificial boundary is compared with that from the surface of the dam foundation, and ther.
采用粘-弹性人工边界条件应用于重力坝的动力响应分析中，解决了波在边界上的反射问题。
In order to reduce the effect of wave reflecting on artificial boundary, transmitting boundary and semi-infinite element are respectively used to treat the lateral and underside boundaries.
考虑到人工截断边界上波反射对计算结果的影响，分别用传递边界和半无限单元来处理侧面和底面边界。
To get the better result of seismic wave propagation, the artificial boundary reflections, stability, numerical dispersion and other problems must be considered in the numerical simulation.
为了得到更好的模拟效果，在模拟的过程中，必须考虑人为边界反射以及稳定性、频散等问题。
Numerical examples prove good accuracy of the artificial boundary conditions and wave motion input method, which can be easily used in study of problems of nonlinear wave motion in layered soils.
数值算例表明，所给出的人工边界与波动输入方法具有良好的精度，可以方便地应用于成层地基非线性波动问题的研究。
The wave input method for viscous-spring artificial boundary, calculating method of static boundary conditions on the proposed unifiedboundary and their numerical simulation techniques are studied.
研究了粘弹性人工边界上的波动输入方法，给出了粘弹性静-动力统一人工边界上静力边界条件的确定方法；
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。
The boundary condition differences between natural power and artificial driven fracturing in hydraulic and hydroelectric engineering are presented.
分析了水利水电等工程中的水力劈裂与人工致裂边界条件的不同。
Artificial damping boundary is adopted in seismic model test of arch dam on shaking table to simulate the radiation damping effect due to energy dissipation in infinitive foundation.
在振动台上进行拱坝动力模型试验时，设置人工阻尼边界，以模拟地震时地震动能量向无限远域地基逸散的地基幅射阻尼效应。
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。
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；
Artificial immune network clustering is often ineffective when there is noise or undefined cluster boundary in the data.
当数据集聚类边界不清晰或存在噪声干扰时，人工免疫网络聚类算法通常无法获得有效的聚类划分。
We propose a numerical method using boundary element to model the electromagnetic filed induced by artificial source in the frequency domain with 3-D topography.
提出了一种用边界元法计算频率域人工源三维地形电磁场的数值模拟方法。
We propose a numerical method using boundary element to model the electromagnetic filed induced by artificial source in the frequency domain with 3-D topography.
提出了一种用边界元法计算频率域人工源三维地形电磁场的数值模拟方法。
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