Effect of edge distance ratio on residual stresses induced by cold expansion and fatigue life of TC4 plates

被引：37
|
作者：
Liu, Jun [1 ]
Wu, Henggui [1 ]
Yang, Jinjie [1 ]
Yue, Zhufeng [1 ]
机构：
[1] Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710129, Peoples R China
来源：
ENGINEERING FRACTURE MECHANICS | 2013年 / 109卷
基金：
中国国家自然科学基金;
关键词：
TC4 titanium alloy plate; Split-sleeve cold expanded holes; Residual stress; Critical plane approach; Edge distance ratio; HOLES; SIMULATION;
D O I：
10.1016/j.engfracmech.2013.05.012
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A finite element model is used to analyze the residual stress distribution around a cold expanded hole in a TC4 plate with various values of the edge distance ratio. The fatigue life of cold expanded hole is predicted using two models based on the critical plane approaches: SWT model and WB model. The predicted values are also compared with experimental results. The results show that the WB model achieves a better accuracy for cold expanded holes. When the edge distance ratio decreases, the residual tangential compressive stress and fatigue life of a cold expanded holes decrease. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：130 / 137
页数：8
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