May the singular integrals in BEM be replaced by Zero?
Steffen Börm, Nico Krzebek, and Stefan A. Sauter
Contact the author: Please use for correspondence this email.
Submission date: 08. Oct. 2003
published in: Computer methods in applied mechanics and engineering, 194 (2005) 2-5, p. 383-393
DOI number (of the published article): 10.1016/j.cma.2004.03.016
MSC-Numbers: 45B05, 65M39
Keywords and phrases: bem, numerical quadrature, singular integrals
Download full preprint: PDF (201 kB), PS ziped (214 kB)
When approximating the singular integrals arising in the boundary element method by quadrature techniques, it is important to keep the quadrature error consistent with the discretization error in order to reach the optimal order of convergence. In classical approaches, this means that the order of the quadrature grows logarithmically in the number of degrees of freedom.
We present a quadrature scheme based on alternative representations of the singular integrands that allows us to use a constant quadrature order without giving up consistency.