Numerical aspects in the SGBEM solution of softening cohesive interface problems
[摘要] Some numerical aspects of a new symmetric Galerkin boundary integral formulation presented in [A. Salvadori, A symmetric boundary integral formulation for cohesive interface problems, Comput. Mech. 32 (2003) 381-391] connected with a like arc-length technique for softening cohesive interface problems introduced in [F. Freddi, Cohesive interface analysis via boundary integral equations, Ph.D. thesis, University of Bologna, Italy, 2004] are here investigated. Further, if the problem is invariant with respect to a finite group! of congruences of the Euclidean space R-2, we propose to reduce the computational cost of the symmetric Galerkin boundary element method (SGBEM) matrix evaluation and linear system solution using suitable restriction matrices strictly related to a system of irreducible matrix representation of S. Some numerical simulations are presented and discussed. (C) 2006 Elsevier B.V. All rights reserved.
[发布日期] 2007-12-31 [发布机构]
[效力级别] Proceedings Paper [学科分类]
[关键词] boundary integral equation;cohesive interface;symmetric Galerkin boundary element method (SGBEM);arc-length technique;restriction matrices [时效性]
