On the fatigue behavior of cold expanded fastener holes subjected to bolt tightening

被引：63

作者：

Chakherlou, T. N. ^{[1
]}

Alvandi-Tabrizi, Y. ^{[1
]}

Kiani, A. ^{[2
]}

机构：

[1] Univ Tabriz, Fac Mech Engn, Tabriz, Iran

[2] Univ Appl Sci Jena, Scitec Dept, Jena, Germany

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2011年 / 33卷 / 06期

关键词：

Cold expansion; Bolt clamping; Fatigue; Residual stress; Finite element; RESIDUAL-STRESSES; CLAMPING FORCE; ALUMINUM-ALLOYS; WORKING PROCESS; RIVET HOLES; EXPANSION; LIFE; CRACK; THICKNESS; PLATES;

D O I：

10.1016/j.ijfatigue.2010.12.014

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Cold expansion literature has been generally devoted to open hole specimens. Nevertheless, cold expanded specimens are practically used in bolted and riveted connections possessing different fatigue behavior than open hole specimens. This paper has sought to investigate the fatigue behavior of cold expanded specimens after being subjected to bolt tightening. Fatigue tests and numerical simulation were conducted to study the role of bolt clamping force on the residual stress distribution, fatigue life and failure mode of bolted cold expanded specimens. The results significantly reveal that bolt clamping contributes more positive effect and prolongs the fatigue life additionally. However, it may also change the failure mode from notch fatigue to fretting fatigue. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：800 / 810

页数：11

共 42 条

[1] An FE analysis for assessing the effect of short-term exposure to elevated temperature on residual stresses around cold expanded fastener holes in aluminum alloy 7075-T6 [J].