Examination of Three-Layered Clinch Joints

Abstract:

The reliable operation of an engineering structure is highly influenced by the joints of its structural elements. The selection of the applied joints is often determined by the function of the structure. In addition, the requirements for joints must be considered: strength, elongation, sealing, mobility, assembly, safety against loosening, feasibility, economy, design, etc. of the joint. The range of sheet materials used in the vehicle industry is very broad: manufacturers can choose the most suitable materials for a given purpose from a wide selection of materials, and it is also common to use sheets of several types of materials, with different thicknesses and physical and chemical properties, within a structural element. However, these sheets need to be combined in some way to produce a proper final product design. For combining thin sheet material, several different joining technologies are known. The aim of the study is the examination of clinched joints made of aluminium due to the highly increasing percentage of aluminium sheet usage in car bodies. The applied materials are EN AW 5754 and EN AW-1050 with different thicknesses. The joints were analysed by FEA and experimentally tested as well.

• Periodical: Key Engineering Materials (Volume 952)
• Pages: 61-67
• DOI: https://doi.org/10.4028/p-Ivjsq2
• Online since: August 2023
• Authors: Péter Zoltán Kovács*, Szabolcs Jónás
• Keywords: Clinch Joining, Joining by Forming, Multi-Layer Clinch, Sheet Metal Forming

References

[1] X. Gao, C. Chen, X. Ren, Y. Li, Investigation on failure mechanism of the square clinched joints with different sheet thicknesses, Engineering Failure Analysis, Vol. 134, (2022) 106013

DOI: 10.1016/j.engfailanal.2021.106013

[2] A. Sahm, M. Gáspár, Á. Meilinger, Properties of hybrid aluminium-steel joints made by resistance spot welding, Defect and Diffusion Forum 416 pp.131-138 (2022)

DOI: 10.4028/p-3099yq

[3] M. Gáspár, H. Tervo, A. Kaijalainen, Á. Dobosy, I. Török, The Effect of Solution Annealing and Ageing During the RSW of 6082 Aluminium Alloy, K. Jármai and B. Bolló (Eds.): VAE 2018, Lecture Notes in Mechanical Engineering, p.694–708 (2018)

DOI: 10.1007/978-3-319-75677-6_59

[4] L. Ying, T. Gao, M. Dai, P. Hu, J. Dai, Towards joinability of thermal self-piercing riveting for AA7075-T6 aluminum alloy sheets under quasi-static loading conditions, International Journal of Mechanical Sciences, Vol. 189 (2021), 105978

DOI: 10.1016/j.ijmecsci.2020.105978

[5] G. Chen, K. Zeng, B. Xing, X. He, Multiple nonlinear regression prediction model for process parameters of Al alloy self-piercing riveting, Journal of Materials Research and Technology, Vol. 19 (2022) pp.1934-1943

DOI: 10.1016/j.jmrt.2022.05.118

[6] Y. Abe, T. Kato, K. Mori, S. Nishino, Mechanical clinching of ultra-high strength steel sheets and strength of joints, Journal of Materials Processing Technology, Vol. 214 (2014) pp.2112-2118

DOI: 10.1016/j.jmatprotec.2014.03.003

[7] T. Gerstmann, B. Awiszus, Recent developments in flat-clinching, Computational Materials Science, Vol. 81 (2014) pp.39-44

DOI: 10.1016/j.commatsci.2013.07.013

[8] Y. Liu, W. Zhuang, S. Wu, Damage to carbon fibre reinforced polymers (CFRP) in hole-clinched joints with aluminium alloy and CFRP, Composite Structures, Vol. 234 (2020) 111710

DOI: 10.1016/j.compstruct.2019.111710

[9] J. Varis, Economics of clinched joint compared to riveted joint and example of applying calculations to a volume product, Journal of Materials Processing Technology 172 (2006) 130–138

DOI: 10.1016/j.jmatprotec.2005.09.009

[10] X. He, Clinching for sheet materials, Science and Technology of Advanced Materials, 18:1, (2017) 381-405

[11] Y. Abe, K. Mori, T. Kato, Joining of high strength steel and aluminium alloy sheets by mechanical clinching with dies for control of metal flow, Journal of Materials Processing Technology 212 (2012) 884-889

DOI: 10.1016/j.jmatprotec.2011.11.015

[12] M. Carboni, S. Beretta, M. Monno, Fatigue behaviour of tensile-shear loaded clinched joints, Engineering Fracture Mechanics 73 (2006) 178-190

DOI: 10.1016/j.engfracmech.2005.04.004

[13] Ľ. Kaščák , E. Spišák, J. Majerníková, Joining three car body steel sheets by clinching method, Journal Open Engineering (2016) 6:566–573

DOI: 10.1515/eng-2016-0081

[14] C. Chen, H. Zhang, Y. Xu, J. Wu, Investigation of the flat-clinching process for joining three-layer sheets on thin-walled structures, Thin-Walled Structures, Vol. 157 (2020) 107034

DOI: 10.1016/j.tws.2020.107034

[15] S. Wiesenmayer, M. Merklein, Potential of shear-clinching technology for joining of three sheets, Journal of Advanced Joining Processes, Vol. 3 (2021) 100043

DOI: 10.1016/j.jajp.2021.100043

[16] J. Wang, Y. Wang, S. Wang, G. Lu, C. Zheng, Z. Ji, Experimental and numerical investigation on incremental laser shock clinching for joining three sheets of copper/aluminum/stainless steel, Optics & Laser Technology, Vol. 141 (2021) 107141

DOI: 10.1016/j.optlastec.2021.107141

[17] S. Saberi, N. Enzinger, R. Vallant, H. Cerjak, Influence of plastic anisotropy on the mechanical behavior of clinched joint of different coated thin sheets, International Journal of Material Forming (2018)

DOI: 10.1007/s12289-008-0349-9