Transactions of Materials and Heat Treatment

Title：Accurate forming on riveting assisted by ultrasonic vibration

Authors： Guan Yanjin1 Xie Zhendong2 Hu Guofeng1 Zhai Jiqiang1

Unit：

KeyWords：

ClassificationCode：TG316

year,vol(issue):pagenumber：2021,46(9):132-137

Abstract：

Riveting experiments were conducted on three kinds of plates, such as 45 steel, 6063 aluminum alloy and T2 copper by the universal material testing machine using ultrasonic vibration assist technology. Then, the riveting force, shear strength and relative interference amount as well as material flow of 6063 aluminum alloy rivets during the riveting process were analyzed under different conditions, and the influences of ultrasonic vibration on mechanical properties, deformation behavior and riveting quality of rivets during the riveting process were investigated. The results show that the riveting load decreases gradually with the increasing of amplitude when applying ultrasonic vibration, the reduction of riveting force for different plates are basically the same, and the shear strength is enhanced with the maximum increase of 10.47%. Under the surface effect and softening action of ultrasonic vibration, the friction effect between contact surfaces is significantly improved, the area of difficult deformation zone is reduced by 51.08%, and the deformation size of nail rod is more uniform. Thus, the ultrasonic vibration reduces the relative interference amount coefficient of riveted structures, and the improvement of dimensional uniformity is beneficial to prolong the fatigue life of riveted structure.

Funds：

国家自然科学基金资助项目（51675307）

管延锦（1969-），男，博士，教授 E-mail：guan_yanjin@sdu.edu.cn

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