Transactions of Materials and Heat Treatment

Title：Simulation and experimental research on blind rivets for plate nuts

Authors： Shi Zhihui Wang Ruiqiang Hong Junjie Sun Qingchao

Unit： Dalian University of Technology Oriental Bluesky Titanium Technology Co. Ltd.

KeyWords： blind rivets bulge of rivet sleeve shear force tensile resistance force plate nut

ClassificationCode：TG306

year,vol(issue):pagenumber：2022,47(2):113-118

Abstract：

Aimed at the problems that the load bearing capacity of blind rivets for plate nuts was weak after riveting, and the bulge of rivet sleeve was prone to cracking, which affected the riveting qualification rate, the mechanical law for the blind rivets and the damage situation for the bulge of rivet sleeve were explored by the method of combining simulation with experiment. For 100° small countersunk head blind rivets for plate nuts, the model for installation simulation, tensile simulation and shear simulation was established by the finite element simulation software DEFORM-3D, and the influence law of rivet structure sizes on tensile resistance force was explored. Then, the optimal extension length of rivet sleeve for each type of blind rivets for plate nuts was obtained, and it was determined that the tensile resistance force of rivet was inversely proportional to the inner diameter of rivet sleeve and directly proportional to the diameter of rivet rod head. Furthermore, the relationship between the wall thickness of rivet sleeve and the maximum principle stress at the bulge position of rivet sleeve was explored by using the inner diameter of rivet sleeve and the diameter of rivet rod head, and the possible failure phenomenon of the rivet sleeve was predicted. Finally, through the corresponding experiments, the rationality of the finite element simulation model was verified. Thus, the related research provides a reference for improving the riveting qualification rate and development of blind rivets for plate nuts.

Funds：

中央高校基本科研业务费项目（DUT19LAB17）

作者简介：石智辉(1997－)，男，硕士研究生,E-mail：1245638368@qq.com;通信作者：孙清超(1979－)，男，博士，教授,E-mail：qingchao@dlut.edu.cn

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