Failure analysis of fifth wheel coupling system

被引：13

作者：

Reboh, Y. ^{[1
]}

Griza, S. ^{[1
]}

Reguly, A. ^{[1
]}

Strohaecker, T. R. ^{[1
]}

机构：

[1] Univ Fed Rio Grande do Sul, Dept Met Engn, BR-90035190 Porto Alerge, Brazil

来源：

ENGINEERING FAILURE ANALYSIS | 2008年 / 15卷 / 04期

关键词：

failure analysis; weld fatigue; vehicle failures; automotive failures; safety;

D O I：

10.1016/j.engfailanal.2007.02.007

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This work presents a failure analysis study of a fifth wheel coupling system that failed in service. The first part of the study presents the failure analysis conducted to determinate the reasons for failure. A finite element analysis was conducted to simulate the coupling in service. The results of the numerical analysis was compared with fatigue S-N curves given in the British Standard BS 7608 - Fatigue design and assessment of steel structures. Finally, corrective actions are presented to prevent similar events. The investigation concluded that the failure occurred by fatigue initiated at a welded joint. The presence of defects in the weld toe created the condition for crack initiation. The adoption of better welding procedures and careful inspection are vital to prevent similar failures. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：332 / 338

页数：7

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