收稿日期: 2001-08-17
修回日期: 2001-10-19
网络出版日期: 2002-01-10
基金资助
国家自然科学基金(50176048)资助;国家重点基础研究发展规划项目(G200026300)
Function f in Axisymmetric Dual Reciprocity Boundary Element Method and its Singularity Processing
Received date: 2001-08-17
Revised date: 2001-10-19
Online published: 2002-01-10
白凤武 , 卢文强 . 轴对称双倒易边界元法的f函数及其奇性处理[J]. 中国科学院大学学报, 2002 , 19(1) : 18 -27 . DOI: 10.7523/j.issn.2095-6134.2002.1.003
A universal function f with summed form in dual reciprocity boundary element formulation for axisymmetric problems has been derived from three dimensional Poisson's equation whose right hand is radial basis function. The singularity on symmetric axis of the function f was eliminated by integral average of function f and selecting different function f on the basis of the different characteristic of calculated zones. The feasibility of present selection and the singularity processing of function f was well proved by the calculation of the transient heat conduction problems in solid cylinder and sphere.
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