Transactions of Materials and Heat Treatment

Title：Tensile test analysis of aluminum alloy connection part in automobile body

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ClassificationCode：U463

year,vol(issue):pagenumber：2020,45(4):189-194

Abstract：

Aluminum alloy plate is widely applied in automotive body. The tensile strength of three connection processes for 6082-T6 aluminum alloy was studied. The connection strength in self-piercing riveting (SPR) were compared, including single-riveting, double-riveting and triple-riveting. Furthermore, the connection strength of single-riveting connection for self-piercing riveting (SPR), flow drill screw riveting (FDS) and resistance spot welding (RSW) were studied. The tensile tests of the above-mentioned riveting specimens were carried out by using MTS810 hydraulic universal testing machine combined with digital image correlation technology (DIC) to study the reliability and tensile strength of three types of connections. Through the test result comparison of the single-riveting, double-riveting and triple-riveting specimens under SPR, the results show that the double-riveting specimen can fully exert the property of aluminum alloy material, and it is of great significance to the safety design of product using the SPR connection. Comparing with the single-riveting of the three connections, it is found that the SPR connection process has better bearing capacity and reliability. The test results can guide the selection and optimization of the automobile process.

Funds：

国家自然科学基金青年项目（11502055）；机械结构强度与振动国家重点实验室开放基金项目（V2018-KF-32）

叶雨寒（1997-），男，学士 E-mail：992998024@qq.com 通讯作者：习会峰（1980-），女，博士，副教授 E-mail：xihuifeng@jnu.edu.cn

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