Influence of die geometry on self-piercing riveting of aluminum alloy AA6061-T6 to mild steel SPFC340 sheets

doi:10.1007/s40436-019-00250-9

Advances in Manufacturing ›› 2019, Vol. 7 ›› Issue (2): 209-220.doi: 10.1007/s40436-019-00250-9

Influence of die geometry on self-piercing riveting of aluminum alloy AA6061-T6 to mild steel SPFC340 sheets

Jiang-Hua Deng, Feng Lyu, Ru-Ming Chen, Zhi-Song Fan

School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, People's Republic of China

收稿日期:2018-07-31 修回日期:2019-03-18 出版日期:2019-06-25 发布日期:2019-06-19
通讯作者: Zhi-Song Fan E-mail:zhisongfan@fzu.edu.cn
基金资助:
The authors gratefully acknowledge both the National Natural Science Foundation of China (Grant Nos. 51774097, 51705081) and Key Project of the Youth Natural Science Fund of Fujian Provincial University (Grant No. JZ160417) for their kindly financial supports of this work. Jiang-Hua Deng is grateful for the financial support from Program for New Century Excellent Talents in Fujian Province University (NCETFJ).

Influence of die geometry on self-piercing riveting of aluminum alloy AA6061-T6 to mild steel SPFC340 sheets

Jiang-Hua Deng, Feng Lyu, Ru-Ming Chen, Zhi-Song Fan

School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350116, People's Republic of China

Received:2018-07-31 Revised:2019-03-18 Online:2019-06-25 Published:2019-06-19
Contact: Zhi-Song Fan E-mail:zhisongfan@fzu.edu.cn
Supported by:
The authors gratefully acknowledge both the National Natural Science Foundation of China (Grant Nos. 51774097, 51705081) and Key Project of the Youth Natural Science Fund of Fujian Provincial University (Grant No. JZ160417) for their kindly financial supports of this work. Jiang-Hua Deng is grateful for the financial support from Program for New Century Excellent Talents in Fujian Province University (NCETFJ).

摘要/Abstract

摘要： The self-piercing riveting (SPR) process was used to join 2.0-mm-thick aluminum alloy 6061-T6 and 1.2-mm-thick mild steel SPFC340 sheets. SPR joints produced with a conventional flat-bottom die and conicalsection dies were investigated both experimentally and numerically. Lap shear tests were conducted under quasistatic conditions to evaluate the load-carrying capability of these SPR joints. The effect of variation in die geometry (such as variation in the die groove shape, cone height, and die radius) on the main mechanical response of the joints, namely the peak load and energy absorption, was discussed. The results showed that SPR joints produced with the conical-section dies exhibited a failure mode similar to those produced with a conventional die. All the joints failed by tearing of the top steel sheet. Cracks that occurred in the bottom aluminum alloy 6061-T6 sheet around the rivet leg were a result of tangential tensile stress. The cone height of a conical-section die is the most important parameter affecting the surface quality of Al/steel SPR joints. Conical-section dies with a moderate convex can ensure a good surface quality during the SPR process. In addition, SPR joints with single conical-section die allow higher tensile strength and energy absorption compared to those with double conical-section die.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-019-00250-9

关键词: Self-piercing riveting (SPR), Aluminum/steel dissimilar sheet, Conical-section die, Lap shear test

Abstract: The self-piercing riveting (SPR) process was used to join 2.0-mm-thick aluminum alloy 6061-T6 and 1.2-mm-thick mild steel SPFC340 sheets. SPR joints produced with a conventional flat-bottom die and conicalsection dies were investigated both experimentally and numerically. Lap shear tests were conducted under quasistatic conditions to evaluate the load-carrying capability of these SPR joints. The effect of variation in die geometry (such as variation in the die groove shape, cone height, and die radius) on the main mechanical response of the joints, namely the peak load and energy absorption, was discussed. The results showed that SPR joints produced with the conical-section dies exhibited a failure mode similar to those produced with a conventional die. All the joints failed by tearing of the top steel sheet. Cracks that occurred in the bottom aluminum alloy 6061-T6 sheet around the rivet leg were a result of tangential tensile stress. The cone height of a conical-section die is the most important parameter affecting the surface quality of Al/steel SPR joints. Conical-section dies with a moderate convex can ensure a good surface quality during the SPR process. In addition, SPR joints with single conical-section die allow higher tensile strength and energy absorption compared to those with double conical-section die.

The full text can be downloaded at https://link.springer.com/article/10.1007/s40436-019-00250-9

Key words: Self-piercing riveting (SPR), Aluminum/steel dissimilar sheet, Conical-section die, Lap shear test

Jiang-Hua Deng, Feng Lyu, Ru-Ming Chen, Zhi-Song Fan. Influence of die geometry on self-piercing riveting of aluminum alloy AA6061-T6 to mild steel SPFC340 sheets[J]. Advances in Manufacturing, 2019, 7(2): 209-220.

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Influence of die geometry on self-piercing riveting of aluminum alloy AA6061-T6 to mild steel SPFC340 sheets

Influence of die geometry on self-piercing riveting of aluminum alloy AA6061-T6 to mild steel SPFC340 sheets

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