In the new method for two-dimensional problems the line integrals onboundary elements are converted into the evaluation of potentialfunctions at the ends of these elements. For three-dimensional cases, thesurface integrals on the usual boundary elements are transformed, through an application of Stokes'theorem, into line integrals on thebounding contours of these elements.
边界轮廓法是刚刚出现的一种新型的边界元法，该方法的核心是利用边界积分方程被积函数散度为零的特性，对二维问题，原积分方程中沿边界单元的线积分被化为单元两端点势函数之差计算，对三维问题，将边界单元上的面积分转变为沿单元轮廓的线积分，它是一种十分简便有效的边界元新技术。
When a solid region in three-space has an axis of symmetry, the evaluation of triple integrals overis often facilitated by using cylindrical coordinates.
当空间立体区域有一个对称轴时，计算上的三重积分通常使用柱坐标比较容易。
In the procedure of computing impedance matrix elements, an improved method of accurate evaluation of retarded time integrals with singularity in self-impedance elements in MOT scheme is presented, which improve the late-time stability of MOT scheme.
在阻抗矩阵元素计算中，研究了一种基于Duffy变换的包含时间迟滞项的奇异积分的精确计算方法，提高了计算精度，改善了MOT求解积分方程中的晚时不稳定性。
Accurate evaluation of singular integrals and multi region condensational procedure in 2 D boundary element analysis
二维边界元奇异积分和多域缩聚法分析
It is given a evaluation formula for a class of infinite integrals by applying Parametric Variable integral transformation.
应用含参变量积分变换的方法，给出了一类无穷积分的求值公式。
The Evaluation of Nearly Singular Integrals with Variable Transformation for Elasticity Problems
弹性力学问题中拟奇异积分的变换法
This paper presents an optimum numerical algorithm of center rule for the approximate evaluation of singular integrals over rectangular domains with a inner singularity.
本文对于矩形区域上某一内点为奇点的奇异积分的近似计算给出了优化中心数值算法，它在迭代计算过程中避免了函数值的重复计算。