Application of the substructured finite element/extended finite element method (S-FE/XFE) to the analysis of cracks in aircraft thin walled structures

被引：25

作者：

Wyart, E. ^{[1
]}

Coulon, D. ^{[1
]}

Pardoen, T. ^{[2
]}

Remacle, J. F. ^{[3
]}

Lani, F. ^{[1
]}

机构：

[1] Cenaero, Ctr Rech Aeronaut, B-6041 Gosselies, Belgium

[2] Catholic Univ Louvain, Dept Mat Sci & Proc, B-1348 Louvain, Belgium

[3] Catholic Univ Louvain, Dept Civil Engn, B-1348 Louvain, Belgium

来源：

ENGINEERING FRACTURE MECHANICS | 2009年 / 76卷 / 01期

关键词：

Fracture mechanics; Stress intensity factor; Extended finite element method; Domain decomposition; Thin walled structure; LEVEL SETS; X-FEM; GROWTH; STRESS; SIMULATION;

D O I：

10.1016/j.engfracmech.2008.04.025

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The substructured finite element/extended finite element (S-FE/XFE) approach is used to compute stress intensity factors in large aircraft thin walled structures containing cracks. The structure is decomposed into a 'safe' domain modeled with classical shell elements and a 'cracked' domain modeled using three-dimensional extended finite elements. Two applications are presented and discussed, supported by validation test cases. First a section of stiffened panel containing a through-thickness crack is investigated. Second. small surface cracks are simulated in the case of a generic 'pressure membrane' with realistic crack configurations. These two semi-industrial benchmarks demonstrate the accuracy, robustness and computational efficiency of the substructured finite element/extended finite element approach to address complex three-dimensional crack problems within thin walled structures. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：44 / 58

页数：15

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