Analysis of the influence of a rivet yield stress distribution on the micro-SPR joint – initial approach

Presz, W.; Cacko, Robert�

doi:10.1016/s1644-9665(12)60032-6

Cited by 13 publications

(6 citation statements)

References 2 publications

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“…The main aim was to verify the key idea of the concept: possibility to obtain enough strength of the joining between main punch core and its end which is formed by combined extrusion. Material flow is to some degree similar to that, which can be observed during clinching processes [14,15]. An empty space inside undercut is fully filled at point 3 -Fig.…”

Section: Experiments and Numerical Analysissupporting

confidence: 63%

Archives of Metallurgy and Materials

Presz

Cacko

2018

Self Cite

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Rapid development of micro-machines, which partly needs metallic micro-parts, is nowadays a fact. A very promising way of micro-parts manufacturing is micro-blanking. For a quite complicated 2D shapes, like micro-gears, dies might be rather easy manufactured by wire-cutting. Production of micro-punches seems to be much more difficult. In this article a solution of manufacturing of micro-punches consisting of two components: punch body based on standard micro-punches and mechanically joined end -bimetallic micro-punch -is proposed. Joining process is based on the extrusion, after which a shaped end must be hardened and finally sharpened. Within this work an experimental stack-up equipped with a special measuring system and unique flexible micro-tools was developed. Simplified processes of bimetallic micro-punch manufacturing was completed as well as FEM analysis.

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Section: Experiments and Numerical Analysissupporting

confidence: 63%

Archives of Metallurgy and Materials

Presz

Cacko

2018

Self Cite

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“…His results showed that when the yield strength of a self-piercing rivet material was too low, the rivet deformed before it could pierce the top sheet, and when the yield strength of the rivet material was too high, the rivet could not be deformed, such that it could not form an interlock within the sheets. To use the advantage of SPR as a cold joining process and to make it suitable for joining small structures, Presz and Cacko [59] scaled down the size of a normal 5-mm diameter self-piercing rivet to a micro-rivet with diameter of 0.7 mm. They simulated the forming process of 4 different types of micro-rivets, and based on the properties of these rivets, they simulated the micro-SPR joining process.…”

Section: Rivetmentioning

confidence: 99%

Self-piercing riveting-a review

Chrysanthou

Imran

et al. 2017

Int J Adv Manuf Technol

230

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Self-piercing riveting (SPR) is a cold mechanical joining process used to join two or more sheets of materials by driving a rivet piercing through the top sheet or the top and middle sheets and subsequently lock into the bottom sheet under the guidance of a suitable die. SPR is currently the main joining method for aluminium and mixed-material lightweight automotive structures. SPR was originated half century ago, but it only had significant progress in the last 25 years due to the requirement of joining lightweight materials, such as aluminium alloy structures, aluminium-steel structures and other mixed-material structures, from the automotive industry. Compared with other conventional joining methods, SPR has many advantages including no pre-drilled holes required, no fume, no spark and low noise, no surface treatment required, ability to join multi-layer materials and mixed materials and ability to produce joints with high static and fatigue strengths. In this paper, research investigations that have been conducted on self-piercing riveting will be extensively reviewed. The current state and development of SPR process is reviewed and the influence of the key process parameters on joint quality is discussed. The mechanical properties of SPR joints, the corrosion behaviour of SPR joints, the distortion of SPR joints and the simulation of SPR process and joint performance are reviewed. Developing reliable simulation methods for SPR process and joint performance to reduce the need of physical testing has been identified as one of the main challenges.

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“…An inappropriate material selection for SPR joint may result in joint fracture [26]. The rivet's state of stress, especially in very small ones, is of very high importance [27].…”

Section: Resultsmentioning

confidence: 99%

The Experimental Analysis of Forming and Strength of Clinch Riveting Sheet Metal Joint Made of Different Materials

Mucha

Kaščák

Spišák

2013

Advances in Mechanical Engineering

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The paper presents the pressed joint technology using forming process with or without additional fastener. The capabilities for increasing the load-carrying ability of mechanical joints by applying special rivets and dies were presented. The experimental research focused on joining steel sheet metal made of different materials. The joint forming was performed with the solid round die and rectangular split die for riveted joint forming. The load-carrying ability of joints was evaluated by measuring the maximum load force in the shearing test in the tensile testing machine. The effect of joint forming process on joined material strain was compared by measuring the microhardness of the joints.

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Analysis of the influence of a rivet yield stress distribution on the micro-SPR joint – initial approach

Cited by 13 publications

References 2 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Self-piercing riveting-a review

The Experimental Analysis of Forming and Strength of Clinch Riveting Sheet Metal Joint Made of Different Materials

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