Abstract
For the past few years, the lightweight structure has been studying detailly due to the increasingly stringent requirements of environmental protection, energy conservation, and emission reduction. The main measure to realize automobile lightweight is to adopt parts manufactured by lightweight materials. To connect these lightweight materials, a new technology named flat-rivet clinching process (FRCP) has been developed. In this study, the impact of friction coefficient and specimen material on material flow was investigated utilizing the finite element method (FEM). The FE model was established utilizing DEFORM-2D software. AA5052 was selected as the main specimen material in this study. The equivalent stress and strain distribution, material flow velocity, and material flow direction were analyzed utilizing FEM. The consequences showed that except friction coefficient of the contact region between the upper plate and blank holder, the friction coefficient of other contact surfaces played a crucial role during the material flow. It could affect the formation of mechanical interlocking. Meanwhile, the higher the sheet strength and material flow resistance, the greater the riveting force required by the flat-rivet clinching process (FRCP).
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Funding
This research work is supported by the National Natural Science Foundation of China (Grant No. 51805416), Young Elite Scientists Sponsorship Program by CAST, Natural Science Foundation of Hunan Province (Grant No. 2020JJ5716), Natural Science Basic Research Plan in Shanxi Province of China (Grant No. 2019JQ-372), the Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University (Grant No. ZZYJKT2019-01), Hunan Provincial Natural Science Foundation for Excellent Young Scholars, and Huxiang High-Level Talent Gathering Project of HUNAN Province (Grant No. 2019RS1002).
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Chao Chen conceived and designed the experiments; Chao Chen performed the experiments; Yawen Ouyang and Denglin Qin analyzed the data; Chao Chen and Denglin Qin contributed reagents/materials/analysis tools; Chao Chen and Yawen Ouyang wrote the paper.
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Chen, C., Ouyang, Y. & Qin, D. Finite element analysis of material flow in flat-rivet clinching process. Int J Adv Manuf Technol 116, 1961–1974 (2021). https://doi.org/10.1007/s00170-021-07532-2
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DOI: https://doi.org/10.1007/s00170-021-07532-2