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论文类型：期刊论文

发表时间：2011-03-01

发表刊物：ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS

收录刊物：SCIE、EI

卷号：35

期号：3

页面范围：587-593

ISSN号：0955-7997

关键字：Singular domain integrals; Boundary element method; Global distance; Radial integration; Polynomials

摘要：In this paper, a new approach is presented for the numerical evaluation of arbitrary singular domain integrals based on the radial integration method. The transformation from domain integrals to boundary integrals and the analytical elimination of singularities can be accomplished by expressing the non-singular part of the integration kernels as polynomials of the distance r and using the intrinsic features of the radial integral. In the proposed method, singularities involved in the domain integrals are explicitly transformed to the boundary integrals, so no singularities exist at internal points. Some numerical examples are provided to verify the correctness and robustness of the presented method. (C) 2010 Elsevier Ltd. All rights reserved.