Investigation of the novel two-step flat clinching process to achieve double-sided flat surfaces on engineering structures

Qin, Denglin; Chen, Chao; Li, Haijun; Ren, Xiaoqiang

doi:10.1007/s40430-022-03809-z

Cited by 4 publications

(2 citation statements)

References 33 publications

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“…Regarding tool kinematics, clinching is categorized into single-stage and two-stage clinching [50,51]. In the single-stage clinching process, only one drive is applied by the punch or die.…”

Section: Clinching 21 Fundamentals Of Clinchingmentioning

confidence: 99%

Clinching of Carbon Fiber-Reinforced Composite and Aluminum Alloy

Han,

2024

Metals

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The extensive use of carbon fiber-reinforced composites and aluminum alloys represents the highest level of automotive body-in-white lightweighting. The effective and secure joining of these heterogeneous materials remains a prominent and actively researched topic within the scientific community. Among various joining techniques, clinching has emerged as a particularly cost-effective solution, experiencing significant advancements. However, the application of clinching is severely limited by the properties of the joining materials. In this work, various clinching processes for the joining of composites and aluminum alloys reported in recent research are described in detail according to three broad categories based on the principle of technological improvement. By scrutinizing current clinching technologies, a forward-looking perspective is presented for the future evolution of clinching technology in terms of composite–aluminum joints, encompassing aspects of tool design, process analysis, and the enhancement of joint quality. This work provides an overview of current research on clinching of CFRP and aluminum and serves as a reference for the further development of clinching processes.

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Section: Clinching 21 Fundamentals Of Clinchingmentioning

confidence: 99%

Clinching of Carbon Fiber-Reinforced Composite and Aluminum Alloy

Han,

2024

Metals

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“…Chen et al [23] analyzed the influence of blank holder spring stiffness and punch radius on material flow and joint interlock during the flat clinching process, and found that increasing blank holder spring stiffness will reduce the joint interlock by affecting the material flow direction. Chen et al [24] proposed a two-step flat clinching process (TSFC) to produce double-sided flat joints by flattening the initial dieless clinched joint. Through the second step, the protrusion height of the dieless clinched joint can be decreased from 1.23 mm to a negligible 0.04 mm.…”

Section: Introductionmentioning

confidence: 99%

Simulation of dieless clinching process considering the limit of blank holder

Wang

Han²,

Li³

et al. 2023

Mechanics & Industry

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The low strength and large protrusion of the traditional dieless clinched joint hindered its application. To improve the mechanical properties of the dieless clinched joint, a novel dieless clinching process considering the limitation of the blank holder was proposed. The finite element model of the dieless clinching process was established by DEFORM-2D, the influences of the blank holder spring stiffness, the blank holder limit height, and the punch diameter on the mechanical interlock of the joint were analyzed, and the influence laws of blank holder spring stiffness and blank holder limit height on material flow and mechanical interlock were obtained. Then, the influence of these three die parameters and their interaction on the joint interlock were analyzed using the response surface method. The results show that the blank holder displacement plays a key role in the formation of mechanical interlock in the dieless clinching process. Reasonable limit height and spring stiffness of the blank holder can control the flow direction of materials, so as to improve the mechanical interlock and the strength of dieless clinched joints. It provides a new idea for improving the dieless clinching process.

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A review on mechanical and metallurgical joining by plastic deformation

Kasaei

Beygi

Carbas

et al. 2023

Discov Mechanical Engineering

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The substitution of traditional materials with lightweight materials in vehicle structures requires the development of new joining techniques which are capable of joining un-weldable alloys as well as dissimilar materials. Although conventional joining techniques such as fusion welding, adhesive bonding and mechanical fastening have matured in recent decades, their use for some of the above applications is limited. In this paper, recently developed joining techniques based on plastic deformation are presented and discussed. These techniques are divided into two categories, those based on mechanical interlocking and those based on metallurgical bonding. The first category covers clinching, self-pierce riveting and some innovative joining methods, and the second category covers friction stir welding and its variants. The focus of this study is on process development, process control and monitoring, process modelling, and joint characterization techniques. Finally, the two categories are compared, and their potential is discussed.

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Investigation of the novel two-step flat clinching process to achieve double-sided flat surfaces on engineering structures

Cited by 4 publications

References 33 publications

Clinching of Carbon Fiber-Reinforced Composite and Aluminum Alloy

Clinching of Carbon Fiber-Reinforced Composite and Aluminum Alloy

Simulation of dieless clinching process considering the limit of blank holder

A review on mechanical and metallurgical joining by plastic deformation

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