Journal
THIN-WALLED STRUCTURES
Volume 164, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.tws.2021.107903
Keywords
Mechanical properties; Self-piecing riveting; Hybrid joining; Al; steel structure
Categories
Funding
- National Natural Science Foundation of China [52005173, 51975202]
- Natural Science Foundation of Hunan Province, China [2019JJ30005]
- China National Postdoctoral Program for Innovative Talents [BX20200123]
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Open fund of Hunan University, China [32065009]
- Changsha Municipal Natural Science Foundation, China [kq2014047]
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The electromagnetic self-piecing riveted-adhesive hybrid joining method is proposed for Al/steel structure, showing superior performance in peak load and energy absorption, as well as better reliability and security during the failure process.
riveted-adhesive hybrid joining technique is suitable for joining dissimilar material due to excellent performance and tightness of the joint. In this paper, electromagnetic self-piecing riveted-adhesive hybrid joining method was proposed to join Al/steel structure. The mechanical properties and failure behavior of electromagnetic self-piecing riveting, adhesive and its hybrid joints were compared. The shear tests were conducted, and digital image correlation (DIC) technique was employed to analyze the strain of the sheets. The typical failure fracture was observed to reveal the failure mechanism. The results showed that the peak load of the hybrid joint was 177.3% larger than that of the riveted joint, and the energy absorption of the hybrid joint was 360.0% and 47.9% higher than that of the riveted and bonded joint respectively. The failure process of electromagnetic self-piecing riveted-bonded hybrid joint could be divided into two parts: adhesive failure firstly and then rivet failure. The rivet in hybrid joint after adhesive failure could still suffer a certain amount of load, so that suddenly complete failure was not easy to happen. This indicated that the hybrid joint had better reliability and security. In general, the combination of electromagnetic self-piecing riveting and adhesive bonding could produce beneficial coupling effect.
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