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论文类型：期刊论文

发表时间：2013-10-22

发表刊物：WIT Transactions on Modelling and Simulation

收录刊物：EI

卷号：56

页面范围：335-351

ISSN号：1743355X

摘要：In this paper, an efficient method for numerical evaluation of all kinds of singular curved boundary integrals from 2D/3D BEM analysis is proposed based on an operation technique on a projection line/plane. Firstly, geometry variables on a curved line or surface element are expressed by parameters on the projection line/plane, and then all singularities are analytically removed by expressing the non-singular part of the integration kernel as a power series in a local distance defined on the projection line/plane. Also, a set of important relationships computing derivatives of intrinsic coordinates with respect to local orthogonal coordinates is derived. A few examples are provided to demonstrate the correctness and the stability of the proposed method. © 2013 WIT Press.