A non-matching finite element-scaled boundary finite element coupled method for linear elastic crack propagation modelling

被引：40

作者：

Yang, Z. J. ^{[1
,2
]}

Wang, X. F. ^{[2
]}

Yin, D. S. ^{[3
]}

Zhang, Ch ^{[4
]}

机构：

[1] Zhejiang Univ, Coll Civil Engn & Architecture, Hangzhou 310058, Zhejiang, Peoples R China

[2] Univ Manchester, Sch Mech Aerosp & Civil Engn, Manchester L13 9PL, Lancs, England

[3] Three Gorges Univ, Coll Hydraul & Environm Engn, Yichang 443002, Peoples R China

[4] Univ Siegen, Dept Civil Engn, D-57076 Siegen, Germany

来源：

COMPUTERS & STRUCTURES | 2015年 / 153卷

关键词：

Scaled boundary finite element method; Non-matching mesh; Stress intensity factors; Crack propagation; Remeshing procedure; Linear elastic fracture mechanics; HIGHER-ORDER TERMS; FRACTURE-ANALYSIS; GROWTH; FIELDS; REPRESENTATION; SINGULARITIES; PLAIN;

D O I：

10.1016/j.compstruc.2015.02.034

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A novel method coupling the scaled boundary finite element method (SBFEM) and the finite element method (FEM) is developed for linear elastic fracture modelling. A very simple but effective remeshing procedure based on the FE mesh only is used to accommodate crack propagation. The crack-tip region is modelled by an SBFE subdomain whose semi-analytical displacement solutions are used to extract accurate stress intensity factors. The SBFE subdomain is coupled with the surrounding FE mesh through virtual interfaces so that non-matching nodal discretisations of the shared boundaries can be used and only one SBFE subdomain is needed at a crack-tip. A few plane problems are modelled to validate the new method. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：126 / 136

页数：11

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