Fatigue analysis using the singular ES-FEM

被引：6
|
作者：
Nourbakhshnia, N. [1 ]
Liu, G. R. [1 ,2 ]
机构：
[1] Ctr Adv Computat Engn Sci ACES, Fac Engn, Singapore 117576, Singapore
[2] Singapore MIT Alliance SMA, Singapore 117576, Singapore
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2012年 / 40卷
关键词：
Fatigue; Crack propagation; Numerical method; Crack-tip element; Edge-based smoothed finite element method; DRIVING-FORCE PARAMETER; CRACK-GROWTH; ALUMINUM-ALLOYS; CLOSURE; MODEL; BEHAVIOR; PROPAGATION; PREDICTION; SOLIDS;
D O I：
10.1016/j.ijfatigue.2011.12.018
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A novel procedure of singular edge-based smoothed finite element method (singular ES-FEM) has been customized for the fatigue crack growth analysis. For this method, a layer of crack-tip elements with special shape functions was adopted to capture the theoretical singularity of the stress field. In addition, a 'strain smoothing technique' on the smoothing domains associated with the elements' edges was implemented that significantly improves the accuracy of results compared to the existing finite element method. A comparison of results with the experimental observations reported by others reveals an excellent agreement between them implying that singular ES-FEM accurately simulates the fatigue behavior. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：105 / 111
页数：7
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