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论文类型：期刊论文

发表时间：2012-12-01

发表刊物：FINITE ELEMENTS IN ANALYSIS AND DESIGN

收录刊物：Scopus、SCIE、EI

卷号：62

页面范围：28-36

ISSN号：0168-874X

关键字：Scaled boundary method; Element-free Galerkin method; Stress singularities; Unbounded domains

摘要：The scaledboundarymethod is a semi-analytical method of analysis which can be used in computational mechanics. This method uses a normalised radial coordinate system, introducing shape functions to weaken the governing equations in the circumferential direction and solving the resulting differential equations analytically in the radial direction. This paper presents a new Element-freeGalerkin (EFG) scaledboundarymethod in which the EFG approach is used in the circumferential direction. The proposed model is verified by application to a number of standard problems of elasticity. The numerical solutions show that the new method has higher accuracy (for any particular number of nodes) and better convergence than scaledboundary finite elementmethods, and an accurate smooth stress field can be obtained directly without the necessity of using a stress recovery procedure.(C) 2012 Elsevier B. V. All rights reserved.