Perforation studies on flat bars for XFEM-based failure analysis

被引：3
|
作者：
Beizaee, S. [1 ]
Xotta, G. [1 ,2 ]
Willam, K. J. [1 ]
机构：
[1] Univ Houston, Dept Civil & Environm Engn, Cullen Coll Engn, N107 Engn Bldg 1, Houston, TX 77204 USA
[2] Univ Padua, Dept Civil Environm & Architectural Engn DICEA, Via F Marzolo 9, I-35131 Padua, Italy
来源：
ENGINEERING FRACTURE MECHANICS | 2016年 / 155卷
基金：
美国国家科学基金会;
关键词：
Stress concentration; Localization analysis; DIC system; IXFEM; Crack propagation; GROWTH;
D O I：
10.1016/j.engfracmech.2015.11.022
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This paper revisits the stress concentration problem in the proximity of circular perforations of different diameters and presents results of an experimental program on flat bars made of high strength steel, mild steel, cast iron and aluminum alloys. A digital image correlation (DIC) system is used to monitor the experiments and provide displacement and strain fields on the surface of the specimens at different stages of axial loading. The extended finite element method (XFEM) is introduced and applied to the inelastic deformation regime by coupling localization analysis and XFEM to discretely follow crack propagation into the ductile response regime. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：67 / 87
页数：21
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