An experimental investigation of the bolt clamping force and friction effect on the fatigue behavior of aluminum alloy 2024-T3 double shear lap joint

被引：64
|
作者：
Chakherlou, T. N. [1 ]
Razavi, M. J. [1 ]
Aghdam, A. B. [2 ]
Abazadeh, B. [1 ]
机构：
[1] Univ Tabriz, Fac Mech Engn, Tabriz, Iran
[2] Louisiana State Univ, Dept Mech Engn, Baton Rouge, LA 70803 USA
来源：
MATERIALS & DESIGN | 2011年 / 32卷 / 8-9期
关键词：
COLD EXPANSION; STRENGTH; PLATES; LIFE; STRESS;
D O I：
10.1016/j.matdes.2011.04.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this article, the effect of bolt clamping force on the fatigue life of bolted double shear lap joints was investigated. To do so, fatigue tests were carried out on the bolt clamped double shear lap joint specimens made of aluminum alloy 2024-T3. These fatigue tests were conducted with applied torques of 0.25, 2 and 4 N m at different cyclic longitudinal load levels in un-lubricated and lubricated states. From these tests the stress-life (S-N) data for different clamping forces for un-lubricated and lubricated states were obtained. The results show that clamping force increases fatigue life compared to clearance fit specimens. In general, at higher tightening torque higher fatigue lives were achieved, however, below a certain load level the life improvement was discontinued because of fretting phenomenon. Also lubricating the parts of the specimens reduces the advantage of clamping force or torque tightening. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4641 / 4649
页数：9
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