三维边界元多域缩聚法分析

Multi-region Condensational Boundary Element Method for the Analysis of Three－dimentional Elastastatics

采用超参非连续边界元离散边界积分方程及三角极坐标变换方法处理奇异积分。将超参非连续元应用于多城边界元法分析，解决了自由度约束问题，提出了二次缩聚的概念．提高了多域缩聚边界元法的求解效率。

In this paper,superparametric discontinuous boundary elements are developed todiscretize boundary integral equations, and triangular polar coordinate transformation is employedto evaluate the singular integrals. By virtue of the discontinuous elements,the freedom constraintis circumvented in multi-region boundary element analysis.A two－level condensational procdureis presented to improve the efficiency of multi－region analysis.