Journal Article

Modelling and interaction analysis of the self-pierce riveting process using regression analysis and FEA

Liu, Xianping, Liu, Yunpeng, Zhao, Huan, Han, Li

2021

Overview

Self-pierce riveting (SPR) is a major joining method used in the automotive industry. However, there still lacks a fast and easy-to-use joint quality prediction tool available for the automotive engineers. In this study, the simple but effective regression analysis method was applied to quickly predict the SPR joint quality. Two regression models were developed for the prediction of the interlock and the minimum remaining bottom sheet thickness ( T min ). The prediction accuracy of the developed regression models was validated by comparing with the experimental results. Under the studied joint configurations, the mean absolute errors (MAE) of the interlock and T min were 0.047 mm and 0.053 mm, respectively, and the corresponding mean absolute percentage errors (MAPE) were 10.4% and 12.3%. With the developed models, the interaction effects between rivet and die parameters on the joint interlock and T min were also systematically analysed. The results revealed that the rivet and die parameters demonstrated significant influences on the interlock but not on the T min . These interaction effects were further examined by analysing the deformations of the rivet and substrate materials. Moreover, the die-to-rivet volume ratio ( R ) was found to be critical for the formation of interlock, and a larger interlock is more likely achieved when the R is close to 1.0.

• Publisher: Springer London,Springer Nature B.V
• Subject: Automobile industry / Automotive engineering / CAE) and Design / Computer-Aided Engineering (CAD / Deformation effects / Engineering / Finite element method / Industrial and Production Engineering / Mechanical Engineering / Media Management / Model accuracy / Original Article / Parameters / Regression analysis / Regression models / Riveting / Substrates