边界元法

Finally, it should be mentioned here that the singular solution of single layer and multilayer saturated porous media axisymmetric and non-axisymmetric Biot's consolidation problems may be set up, according to present solution.

以本文提出的解答作为基础，可建立单层和多层饱和多孔介质轴对称和非轴对称问题的奇异解，为边界元法提供层状地基Biot固结问题的基本解的解析表达式。

The numerical solution of this kind of partial differential equation by the Boundary Element Method has been unable to be considered for the reason that the basic solution of this equation set has not been found.

由于至今尚未求得此方程组的基本解而无法考虑用边界元法对该种气体流动进行数值求解。

In order to calculate the electric field intensities of spherical electrode s in 3-D electrostatic fields precisely,the spherical surface curve triangular BEM which is based on spherical coordinates transformation is put forward.

为了精确计算三维静电场中球形电极表面的电场强度，提出了基于球坐标变换的球面曲边三角形边界元法。

A two component vector potential in direct BEM is decuced in this thesis, which is the first successful one of indirect BEM for 3D eddy current problems.

用间接边界元法计算三维涡流场在国内、外都还未见成功的先例。

The calculation results show that, the predicted life of crack propagation is in good agreement with the experimental data, and the model is veracious and feasible.

采用边界元法建立了裂纹扩展分析模型，对FGH95粉末高温合金标准紧凑拉伸试样的裂纹扩展试验结果进行了数值模拟，计算结果与试验吻合很好，表明分析方法的准确性及可行性。

On the basis of experimental data, by the aid of boundary-element method, the temperature distribution, temperature gradient and colling velocity in the casting region ran be calculated.

本文建立了铝在双辊式铸轧时铸造区温度场的数学模型，根据实验数据用边界元法计算出铸造区的温度分布、温度梯度和冷却速度。

These changes are called coseismic Coulomb stress changes. They can be calculated by the static dislocation theory in elastic infinite half-space and the boundary element method.

断裂相互作用产生的同震库仑应力改变可以用边界元法和弹性半无限空间中的位错理论进行求解。

Especially for the problem of thin body, duple regularization of both the nearly singular integrals and ill-posed inverse problems is also successful in the two-dimensional boundary element method.

特 别对二维薄体位势边界元法，成功实现了几乎奇异积分和不适定反问题的双重正则化。

In this thesis, the basic principles of using boundary element method to extract capacitance and the multipole accelerated algorithm are introduced. A new conductor dividing and numbering method are realized. The realizing process of multipole accelerated algorithm, especially the realizing process of unit cube's capacitance extraction, is detailedly illuminated. The realizing program chart of multiconductor capacitance extraction is given.

在本论文中，介绍了应用边界元法提取电容的基本原理和多极加速算法的基本原理；实现了一种新的导体分割编号方法；对多极加速算法的实现过程，主要是单位立方体电容提取的实现过程作了详细地说明；给出了多导体电容提取的程序实现框图。

In chapter 2, Multipole Expansion Method and Generalized Minimal Residual Method are introduced.

由于本方法的高效性和低的内存占有量，使边界元法模拟四辊轧机的耦合成形过程成为可能。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。