摘要
基于基本解的一种新的表达式,对二维边界元分析中强奇异积分的确定进行了讨论,从几何方面对基本解的奇异性进行了分析,给出了超参非连续元离散边界积分方程时,位势和弹性力学问题强奇异积分计算的精确表达式,为精确和有效地分析大规模问题提供了一条便利的途径。
Accurate evaluation of singular integrals for boundary element analysis, based upon a new form of fundamental solutions,is studied. Geometrical interpretation for the singularity of fundamental solutions is presented. Closed form expressions are obtained for computation of singular integrals of superparametric discontinuous boundary elements for both potential arid elasticity problems. It is shown from the numerical results that the prcposed approach is feasible and efficient.
出处
《石家庄铁道学院学报》
1996年第2期9-13,共5页
Journal of Shijiazhuang Railway Institute
关键词
边界元
奇异积分
精确解
弹性力学
BEM
fundamental solution
singular integral
closed form expressions
