Research on the improvement of flat-clinching jointed aluminum alloy by reshaping process

Ouyang, Xiaoping; Zhang, Huiyang; Duan, Limin; Chen, Chao

doi:10.1007/s00170-023-11608-6

Cited by 2 publications

(1 citation statement)

References 24 publications

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“…In order to increase the mechanical properties of the joint and also minimizes bulge Heigh (Ouyang et al, 2023a) Introduced a novel reshaping process based on flat-clinching process, experimental investigations were conducted to study material flow and forming mechanism of the reshaping process, then, the influence of diverse reshaping forces was illustrated. Afterwards, (Ouyang et al, 2023b) proposed a novel strategy to reduce the bulge height and improve the strength of flat clinching joint and to recycle scarp aluminum alloy sheets as auxiliary sheets, by studied the forming mechanism and the failure mode of the auxiliary sheet, to improve the shear load by using Al5052-H32, Al5182-O, Al6061-T6 as auxiliary sheet materials.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the hybrid flat-clinching

Boulanouar,

Benzegaou,

Brani

2024

SEES

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The significance of mechanical joining continues to grow across various industrial sectors, including automotive and aerospace, Various processes, from traditional bolting and riveting to advanced techniques like welding, bonding and clinching, are used to assemble parts into a unified whole. One distinctive process is flat-clinching, particularly useful for joining two sheets by creating a geometrically interlocked joint, with its ability to create sturdy connections without the need for external elements, this process involves a punch pushing the sheets into a flat die, inducing local plastic deformation. Its advantages make it a valuable option in manufacturing. In this study, a numerical analysis using the finite element method was conducted, investigating the influence of several parameters as friction by taking many values, tool geometry by creating a new design and hybridization of materials on the flat clinching process. The focus was on evaluating the performance of joints formed by using three configuration of tool geometry by adding a shoulder on the holder and on the punch. lightweight materials, particularly Aluminum5754. Other commonly used materials were also considered as ETP copper, Brass CuZn37 and Mild steel, subjected to a tensile test for a comprehensive assessment. The findings offered understanding of how to enhance the flat-clinching process with regards to various materials depending on chosen parameters to maximize joint strength and reliability. Knowledge of these factors is important to manufacturers seeking to enhance productivity and performance of their products. In sum, this research adds to the general understanding of the mechanical joining methods and provides useful recommendations for companies that maybe interested in applying and optimizing flat-clinching for their joining tasks.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of the hybrid flat-clinching

Boulanouar,

Benzegaou,

Brani

2024

SEES

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Investigation to enhance the mechanical properties of damaged flat-clinching joints by reconditioning processes

Ouyang,

Zhang,

Wang

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part E:

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Joint damage could reduce component reliability and safety. In this paper, a simple and convenient reconditioning process for flat-clinching joints was proposed. The damaged joint was compressed by applying reconditioned force through the upper and lower flat dies to improve the mechanical properties. Compared to other exiting research, the process is easy to operate and requires no additional attachments. Meanwhile, the damage status of the loaded joint, material flow and the causes of improving mechanical properties were illustrated. In addition, the effect law of various reconditioned forces on the mechanical properties of the joints was also investigated. The results show that the flat-clinching joints are damaged when loaded beyond the shear load. However, the mechanical properties can be reconditioned when the interlocking structure remains unbroken. The main reason is that the reconditioning process reconstructs the interlocking structure and increases the neck thickness. Besides, the joint bulge height is also reduced by the reconditioning process. With increased reconditioning forces, the mechanical properties improve. The best mechanical properties are obtained at the recondition force of 40 kN. Compared to the original damaged joints, the shear force and energy absorption of the 40 kN reconditioned joints increased by 33.5% and 70.2%. This is important to promote the development of reconditioning processes and ensure part safety.

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Research on the improvement of flat-clinching jointed aluminum alloy by reshaping process

Cited by 2 publications

References 24 publications

Numerical simulation of the hybrid flat-clinching

Numerical simulation of the hybrid flat-clinching

Investigation to enhance the mechanical properties of damaged flat-clinching joints by reconditioning processes

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