Influence of Die Geometry on the Joint Interlock of Aluminum Sheets Thickness by Using Self-Piercing Rivet
DOI:
https://doi.org/10.31185/wjes.Vol14.Iss1.763Keywords:
SPR joint, Die geometry, Numerical Analysis, Neural Network, Joint interlockAbstract
This study investigates how die geometry affects joint interlock in aluminum sheets of variable thickness joined by self-piercing riveting (SPR). Lap shear and T-peel tests were conducted to evaluate the effects of die configurations and sheet thickness on joint quality. Joint interlock, rivet head height, and minimum remaining material thickness were measured experimentally under a constant riveting load of 17 kN. Three sets of similar sheet combinations (0.9+0.9 mm, 0.7+0.7 mm, and 0.5+0.5 mm) and different thickness distributions (e.g., 0.5+0.7 mm, 0.5+0.9 mm, and 0.9+0.7 mm) were tested using twelve different die configurations. A finite element model was established to forecast the flow of material in rivets, and a neural network approach was implemented to analyze the combined experimental and simulated results. The findings show that joint interlock increased with sheet thickness, from 0.691 mm for (0.5+0.5 mm) to 1.2385 mm for (0.5+0.9 mm). Rivet head height decreased from 0.2239 mm to 0.1301 mm with thicker sheets, while the minimum remaining material thickness increased, reaching 0.2614 mm in the (0.9+0.7 mm) configuration compared to only 0.021 mm in (0.5+0.5 mm). Higher interlock and thicker lower sheets improved load-bearing capacity in lap shear and T-peel tests, with the (0.9+0.9 mm) sheets showing the best performance. Joint success was strongly linked to the minimum remaining material thickness. Neural network analysis further demonstrated the potential to generate optimal die designs, reducing both cost and time.
References
[1] X. He, I. Pearson, and K. Young, "Self-pierce riveting for sheet materials: State of the art," Journal of Materials Processing Technology, vol. 199, pp. 27–36, 2008. DOI: https://doi.org/10.1016/j.jmatprotec.2007.10.071
[2] R. Porcaro, A. G. Hanssen, M. Langseth, and A. Aalberg, "Self-piercing riveting process: An experimental and numerical investigation," Journal of Materials Processing Technology, vol. 171, no. 1, pp. 10–20, 2006. DOI: https://doi.org/10.1016/j.jmatprotec.2005.05.048
[3] P. O. Bouchard, T. Laurent, and L. Tollier, "Numerical modeling of self-pierce riveting—from riveting process modeling down to structural analysis," Journal of Materials Processing Technology, vol. 202, pp. 290–300, 2008. DOI: https://doi.org/10.1016/j.jmatprotec.2007.08.077
[4] L. Han, M. Thornton, and M. Shergold, "A comparison of the mechanical behavior of self-piercing riveted and resistance spot welded aluminum sheets for the automotive industry," Materials and Design, vol. 31, no. 3, pp. 1457–1467, 2010. DOI: https://doi.org/10.1016/j.matdes.2009.08.031
[5] D. Li, L. Han, M. Shergold, M. Thornton, and G. Williams, "Influence of rivet tip geometry on the joint quality and mechanical strengths of self-piercing riveted aluminum joints," Materials Science Forum, vol. 765, pp. 746–750, 2013. DOI: https://doi.org/10.4028/www.scientific.net/MSF.765.746
[6] N.-H. Hoang, R. Porcaro, M. Langseth, and A.-G. Hanssen, "Self-piercing riveting connections using aluminum rivet," International Journal of Solids and Structures, vol. 47, pp. 427–439, 2010. DOI: https://doi.org/10.1016/j.ijsolstr.2009.10.009
[7] J. Mucha, "A study of quality parameters and behavior of self-piercing riveted aluminum sheets with different joining conditions," Strojniški Vestnik – Journal of Mechanical Engineering, vol. 57, no. 4, pp. 323–333, 2011. DOI: https://doi.org/10.5545/sv-jme.2009.043
[8] Y. Abe, T. Kato, and K. Mori, "Self-pierce riveting of three high strength steel and aluminum alloy sheets," International Journal of Material Forming, vol. 1, no. 1, pp. 1271–1274, 2008. DOI: https://doi.org/10.1007/s12289-008-0134-9
[9] H. Shan-ling, L. Zhi-yong, G. Yuan, and Z. Qing-liang, "Numerical study on die design parameters of self-pierce riveting process based on orthogonal test," Journal of Shanghai Jiaotong University (Science), vol. 19, no. 3, pp. 308–312, 2014. DOI: https://doi.org/10.1007/s12204-014-1504-8
[10] Y. Xu, "Effects of factors on physical attributes of self-piercing riveted joints," Science and Technology of Welding and Joining, vol. 11, no. 6, pp. 666–671, 2006. DOI: https://doi.org/10.1179/174329306X131866
[11] Ľ. Kaščák, "Joining materials by self-piercing riveting method," Transfer Inovácií, no. 22, pp. 43–46, 2012.
[12] J. Wang, L. Zhang, M. Li, and S. Chen, "Integration of finite element simulation and neural network modeling for optimizing die geometry and sheet thickness in self-piercing riveting," Journal of Manufacturing Processes, vol. 75, pp. 123–135, Apr. 2024.
[13] S. G. Qu and W. J. Deng, "Finite element simulation of the self-piercing riveting process," in Proceedings of the International Mechanical Engineering Congress and Exposition (IMECE), Boston, MA, USA, Oct. 31–Nov. 6, 2008, pp. 1–6.
[14] D. Li, A. Chrysanthou, I. Patel, and G. Williams, "Self-piercing riveting – a review," Working Paper, University of Warwick, Coventry, UK, 2016. [Online]. Available: http://wrap.warwick.ac.uk/79605 Theses and Dissertations
[15] S. J. Durbin, Friction-Stir Riveting: An Innovative Process for Joining Difficult-to-Weld Materials, M.S. thesis, Dept. Mechanical, Industrial & Manufacturing Engineering, University of Toledo, Ohio, USA, 2012.
[16] P. H. Holmstrøm and J. K. Sønstabø, Behavior and Modeling of Self-Piercing Screw and Self-Piercing Rivet Connections, M.S. thesis, Dept. of Structural Engineering, Faculty of Engineering Science and Technology, NTNU, Trondheim, Norway, 2013.
[17] J. Ioannou, Mechanical Behavior and Corrosion of Interstitial-Free Steel to Aluminum Alloy Self-Piercing Riveted Joints, Ph.D. thesis, School of Engineering and Technology, University of Hertfordshire, England, UK, 2009.
[18] P. J. Johnson, Online Monitoring of Self-Pierce Riveting Systems to Provide Non-Destructive Testing of the Mechanical Interlock, Ph.D. dissertation, Liverpool John Moores University, UK, 2013.
[19] L. Han, Mechanical Behavior of Self-Piercing Riveted Aluminum Joints, Ph.D. dissertation, University of Hertfordshire, in collaboration with Alcan International Ltd. and Textron Fastening Systems, 2003.
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