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Comparative study of the clinching process and clinch-riveting process

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Abstract

This article compared the joints produced by clinching (CL), clinch-riveting with rigid rivet (CR) and clinch-riveting with deformable rivet (CD). The effect of rivet on mechanical properties of joints was investigated. The advantages and disadvantages of each joining technique were discussed. The micromorphologies of the failure joints were observed, and the fracture paths of joints were revealed. Two kinds of aluminum alloy (AA1060 and AA5052) were utilized to produce the joints. The mechanical properties of joints were assessed in four aspects: tensile load, shearing load, failure mode and absorbed energy in shearing test. Results showed that the shearing load and absorbed energy of CR and CD joints were much larger than those of CL joint, due to the rivet bore partial shearing load. The presence of rivet did not change the failure mode of joint. All joints failed in the manner of neck fracture. Though the neck thickness of CD joint was a little smaller than that of CR joint, the diameter of neck for CD joint was enlarged by the rivet upsetting. So the neck of CD joint was stronger than that of CR joint. The frictional force and the interlock structure between the rivet and the upper sheet enhanced the tensile load of joint, so the static load of CD joint was the largest, the CR joint ranked second, and the CL joint ranked last.

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Acknowledgements

This research work is supported by the National Natural Science Foundation of China (Grant No. 51805416), Young Elite Scientists Sponsorship Program by CAST (Grant No. 2019QNRC001), Hunan Provincial Natural Science Foundation for Excellent Young Scholars (Grant No. 2021JJ20059), the Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University (Grant No. ZZYJKT2022-01), and Huxiang High-Level Talent Gathering Project of Hunan Province (Grant No. 2019RS1002).

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Authors and Affiliations

  1. Light Alloy Research Institute, Central South University, Changsha, 410083, China

    Jinliang Wu & Chao Chen

  2. State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha, 410083, China

    Chao Chen

  3. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Chao Chen

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  1. Jinliang Wu
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  2. Chao Chen
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Correspondence to Chao Chen.

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Technical Editor: Lincoln Cardoso Brandao.

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Wu, J., Chen, C. Comparative study of the clinching process and clinch-riveting process. J Braz. Soc. Mech. Sci. Eng. 44, 336 (2022). https://doi.org/10.1007/s40430-022-03626-4

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  • DOI: https://doi.org/10.1007/s40430-022-03626-4

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