Mechanical joining of sheets to tubes by squeeze-grooving

Alves, L.M.; Afonso, Rafael M.; Martins, P.A.F.

doi:10.1177/1464420719876965

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…To control this, joining by the squeezegrooving process is introduced which makes use of two independent mandrels. Results indicate that there is a slight increase in squeezing pressure due to the additional effort required to form the tube into the annular cavity [19].…”

Section: Introductionmentioning

confidence: 97%

High-speed joining of tubes to panel sheets using electro-hydraulic forming

Babalo

Mirzahosein

Fazli

et al. 2022

Int J Adv Manuf Technol

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This study presents a new method for high-speed joining of the sheet to the end of a tube without the need for any additional processes. Joining of the AA3105 sheets to the AA1170 tube is carried out with a thickness of 0.5 mm. The process is performed using electro-hydraulic forming which is a local deformation of the tube and sheet. In this method, the mechanical force is transmitted by working media in a very short time. The shock wave accelerates the panel sheet towards the die and tube to create a form-t joint. To avoid friction between the mandrel and the at sheet, the panel sheet is pre-drilled. The experimental tests were performed to show the effect of process parameters including; washer housing angle, sheet hole diameter, and the gap between the mandrel and top of the sheet. In addition, pull-out test is utilized to determine the strength of the joints in different conditions. Accordingly, the usage of electro-hydraulic forming on joining thin tubular parts to at sheets was successful and the feasibility of this technique as an advanced joining approach was veri ed.

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Section: Introductionmentioning

confidence: 97%

High-speed joining of tubes to panel sheets using electro-hydraulic forming

Babalo

Mirzahosein

Fazli

et al. 2022

Int J Adv Manuf Technol

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“…Taking into consideration the above-mentioned limitations of fastening and adhesive bonding for producing hybrid sheet-tube connections, the objective of this paper is to present an alternative joining by forming solution. The idea is to enlarge the applicability domain of deformation-assisted joining by annular sheet squeezing that was recently developed by Alves et al 6,7 to include hybrid sheet-tube connection. The process was originally developed and applied for metallic sheets and tubes and the challenge addressed in this paper is to analyse and control the interactions between cold plastic deformation of polymers and metals in order to produce sound hybrid (polymer-metal) sheettube connections, away from the tube ends.…”

Section: Introductionmentioning

confidence: 99%

Joining by forming of polymer-metal sheet-tube connections

Alves

Afonso

Martins

2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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This paper focuses on the mechanical joining of sheets to tubes made from dissimilar materials. The objective is to investigate the applicability of deformation-assisted joining by annular sheet squeezing to hybrid polymer-metal connections in order to understand how this new process can be used as an alternative to conventional fastening and adhesive bonding. The presentation draws from identification of the main operating parameters and modes of deformation to characterisation of the process workability limits. Selected test cases retrieved from experimentation and finite element simulation are included. The work is an extension of the previous work of the authors on metallic materials, and results show that joining by annular sheet squeezing is an easy and effective solution to connect a metal sheet to a polymer tube away from its end.

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“…Numerous studies have shown that numerical simulation is an effective method for studying compressing forming process. 16–18 The plastic deformation process and the contact condition at the joining interface can be derived conveniently with finite element simulation. 19,20 Considering the complex contacting character at the joining interface, it is difficult to determine the friction coefficient either by experiment or by simulation.…”

Section: Introductionmentioning

confidence: 99%

Development and application of numerical simulation and experiment for studying the compressive forming technology of transmission lines

Ye¹,

Wu²,

Xia

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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In this paper, an explicit dynamic finite element model is built to study the compressive forming technology used in the metal connector of transmission lines of power system. Additionally, to improve the calculation accuracy, an optimized reversed calculation method for determining the equivalent friction coefficients is designed and coupled into the dynamic finite element model. It is validated with a carefully designed experiment that the coupled dynamic finite element model is effective in describing the plastic flow and in determining the grip strength of the compressive forming structure. Finally, with the dynamic finite element model, an optimized compressive forming process window is obtained for controlling the formation of edge flaws while keeping sufficient grip strength.

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Mechanical joining of sheets to tubes by squeeze-grooving

Cited by 4 publications

References 12 publications

High-speed joining of tubes to panel sheets using electro-hydraulic forming

High-speed joining of tubes to panel sheets using electro-hydraulic forming

Joining by forming of polymer-metal sheet-tube connections

Development and application of numerical simulation and experiment for studying the compressive forming technology of transmission lines

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