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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.3: Design Engineering; Maintenance Engineering; Manufacturing Engineering; ... >Fatigue failure modes in self-piercing riveted aluminium alloy joints
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Fatigue failure modes in self-piercing riveted aluminium alloy joints

机译：自冲铆接铝合金接头的疲劳失效模式

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摘要

Self-piercing riveting, as an alternative joining method to spot-welding, has attracted considerable interest from the automotive industry and has been widely used in aluminium intensive vehicles. One of the important factors that need to be considered is the effect of cyclic loading in service, leading to possible fatigue failure. The previous work reported in the public domain on the behaviour of self-piercing rivets has mainly focused on static tests. The work which is reported in this paper is concerned with the fatigue behaviour of single-rivet joints, joining two 2mm 5754 aluminium alloy sheets. The investigation also examined the effect of interfacial conditions on the fatigue behaviour. A number of fatigue failure mechanisms were observed based on rivet fracture, sheet fracture and combinations of these. The investigation has shown that they were dependent on the applied load and the sheet surface condition. Three-parameter Weibull analysis, using Reliasoft Weibull ++5.0 software, was conducted to analyse the experimental results. The analysis enabled the prediction of early-type failure (infant mortality failure) and wear-out failure patterns depending on the condition of the self-piercing riveted joints and the alloy sheet surface.
机译：自穿孔铆钉作为点焊的替代连接方法已引起了汽车行业的极大兴趣，并已广泛用于铝密集型车辆。需要考虑的重要因素之一是使用中的循环载荷的影响，这可能导致疲劳破坏。在公共领域，以前关于自冲铆钉性能的报道主要集中在静态测试上。本文报道的工作涉及连接两个2mm 5754铝合金板的单铆钉接头的疲劳性能。该调查还检查了界面条件对疲劳行为的影响。基于铆钉断裂，薄板断裂及其组合，观察到许多疲劳失效机理。研究表明，它们取决于所施加的载荷和板材表面状况。使用Reliasoft Weibull ++ 5.0软件进行了三参数Weibull分析，以分析实验结果。该分析能够根据自冲铆接接头和合金薄板表面的状况来预测早期失效（婴儿死亡率失效）和磨损失效模式。

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