A variational approach for evaluation of stress intensity factors using the element free Galerkin method

被引：23

作者：

Wen, P. H. ^{[2
]}

Aliabadi, M. H. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Aeronaut, London SW7 2BY, England

[2] Univ London, Dept Engn, London E1 4NS, England

来源：

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES | 2011年 / 48卷 / 7-8期

关键词：

Variational technique; Element free method; Stress intensity factor; Mixed-mode fracture; Radial basis function interpolation; Moving least-square method; MECHANICS WEIGHT-FUNCTIONS; FRACTURE-MECHANICS; INTERFACE CRACK; BOUNDARY; GROWTH;

D O I：

10.1016/j.ijsolstr.2011.01.002

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A variational meshfree method has been developed to evaluate the stress intensity factors of mixed mode crack problems. The stiffness is evaluated by regular domain integrals and shape functions are determined by both the radial basis function (RBF) interpolation and the moving least-square (MIS) method. The stress intensity factors are obtained by two boundary integrals with variation of crack length. Applications of the proposed technique to two-dimensional fracture mechanics have been presented and comparisons are made with benchmark solutions. Finally, the application of the proposed method to modelling fatigue crack growth is presented. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1171 / 1179

页数：9

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