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
收藏
页码：126 / 136
页数：11
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