Analysis of cold expanded fastener holes subjected to short time creep: Finite element modelling and fatigue tests

被引：30

作者：

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

Aghdam, A. B. ^{[2
]}

Akbari, A. ^{[3
]}

Saeedi, K. ^{[4
]}

机构：

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

[2] Louisiana State Univ, Dept Mech Engn, Baton Rouge, LA 70803 USA

[3] Sahand Univ Technol, Fac Mat Engn, Tabriz, Iran

[4] Concordia Univ, Mech & Ind Engn Dept, Montreal, PQ H3G 1M8, Canada

来源：

MATERIALS & DESIGN | 2010年 / 31卷 / 06期

关键词：

Stress; Fatigue; Creep; Cold expansion; Fastener hole; TEMPERATURE; EXPANSION; LIFE;

D O I：

10.1016/j.matdes.2009.12.047

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The beneficial effects of cold expansion have been well documented in previous studies, yet the performance of cold expanded plates exposed to elevated temperatures is an area of technical interest. In this research, finite element (FE) simulations along with experimental fatigue tests have been carried out to investigate the effect of exposure to elevated temperature on residual stress distribution and subsequent fatigue life of cold expanded fastener holes. According to the obtained results, creep stress relaxation occurs due to exposure to 120 degrees C for 50 h. FE results demonstrate a non-uniform residual stress relaxation regime through the plate thickness around the cold expanded hole and the fatigue test results show that the subsequent fatigue lives have significantly decreased. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2858 / 2866

页数：9

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