Simulation‐aided development of a robust thermoclinching joining process for hybrid structures with textile reinforced thermoplastic composites and metallic components

Gude, Μaik; Vogel, Christian; Gröger, B.

doi:10.1002/mawe.201900036

Cited by 15 publications

(9 citation statements)

References 10 publications

(11 reference statements)

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“…As both sheets have a local preparation, high positioning accuracies of the sheets to each other are required ( Table 4 ). For this reason, Thermoclinching was improved regarding a robust and reproducible joining process [ 32 ]. Thereby, the cutting, heating, and joining processes are combined in an inline-Thermoclinching process to increase the process capability and reduce cycle times.…”

Section: Discussionmentioning

confidence: 99%

“…The studies show that a stepwise CT analysis serves as an adequate method to identify and describe the principle deformation characteristics during the Thermoclinching process. Furthermore it was observed that the deformation characteristics, and therefore the joint quality, is significantly dependent on a wide range of parameters such as tool geometry and joint dimensions, as well as material of the joining partners and process parameters [ 32 ].…”

Section: Process Phenomenamentioning

confidence: 99%

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Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel Joining Technologies

et al. 2021

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Clinching continuous fibre reinforced thermoplastic composites and metals is challenging due to the low ductility of the composite material. Therefore, a number of novel clinching technologies has been developed specifically for these material combinations. A systematic overview of these advanced clinching methods is given in the present paper. With a focus on process design, three selected clinching methods suitable for different joining tasks are described in detail. The clinching processes including equipment and tools, observed process phenomena and the resultant material structure are compared. Process phenomena during joining are explained in general and compared using computed tomography and micrograph images for each process. In addition the load bearing behaviour and the corresponding failure mechanisms are investigated by means of single-lap shear tests. Finally, the new joining technologies are discussed regarding application relevant criteria.

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Section: Discussionmentioning

confidence: 99%

Section: Process Phenomenamentioning

confidence: 99%

Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel Joining Technologies

et al. 2021

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“…Based on this technology, hole-clinching [7][8][9], shear-clinching [10][11][12][13][14][15][16], friction-stir clinching [17][18][19][20][21], clinching-welding technology [22][23][24], and clinch-bond composite technology [25,26] have been developed and applied. The materials have been extended from carbon steel and aluminum alloy to new types of refractory materials such as high-strength steel [27][28][29][30][31][32][33], titanium alloy, and magnesium alloy, which present special advantages in the connection between a metal and a non-metal (carbon fiber and polymer [34][35][36][37][38][39][40][41][42][43][44][45][46]). The technology of connecting the double layers of the same or different materials has become mature, and the research on three layers and above is making progress.…”

Section: They Installed Industrial Robots With Clinching Devices Tomentioning

confidence: 99%

The State of the Art of Finite Element Analysis in Mechanical Clinching

Zhang

Peng

et al. 2021

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Clinching technology is a mechanical connection technology that is applied to connect metal or non-metal sheet materials. It is widely used in different applications, such as automobile, aircraft, household appliances and other industries. In order to reduce weight, save energy, reduce fuel consumption, reduce pollution and curb global warming, lightweight structures with clinched joint are increasingly used in transportation. The finite element technology is popularized in engineering, so that it can get similar results with the test after investing less time, manpower, energy and material resources, which is conducive to the prediction and smooth progress of the test. A review of the finite element analysis of clinching technology is provided in the present paper. The article's work also discusses the strength of the clinched joint, the factors influencing the clinched joint's strength, the failure mechanism of the clinched joint, etc. Furthermore, the novel technologies of clinching as well as the finite element models and methods used in clinching, are introduced. The present paper's main objective was to review the recent developments in the finite element analysis of clinching and provide a basis for further investigation in this area of research.

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“…However, detailed information about the resultant material structure are not available. Another modelling approach on mesoscale for a novel hybrid thermoclinch joining process [9] is shown in [10]. The fabric was modelled in detail with each roving, which is assumed to follow an elasto-plastic material behaviour.…”

Section: /2mentioning

confidence: 99%

Modelling of thermally supported clinching of fibre-reinforced thermoplastics: Approaches on mesoscale considering large deformations and fibre failure

Gröger¹,

Hornig²,

Hoog³

et al. 2021

Esaform 2021

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Thermally supported clinching (Hotclinch) is a novel promising process to join dissimilar materials. Here, metal and fibre-reinforced thermoplastics (FRTP) are used within this single step joining process and without the usage of auxiliary parts like screws or rivets. For this purpose, heat is applied to improve the formability of the reinforced thermoplastic. This enables joining of the materials using conventional clinching-tools. Focus of this work is the modelling on mesoscopic scale for the numerical simulation of this process. The FTRP-model takes the material behaviour both of matrix and the fabric reinforced organo-sheet under process temperatures into account. For describing the experimentally observed phenomena such as large deformations, fibre failure and the interactions between matrix and fibres as well as between fibres themselves, the usage of conventional, purely Lagrangian based FEM methods is limited. Therefore, the combination of contact-models with advanced modelling approaches like Arbitrary-Lagrangian-Eulerian (ALE), Coupled-Eulerian-Lagrangian (CEL) and Smooth-ParticleHydrodynamics (SPH) for the numerical simulation of the clinching process are employed. The different approaches are compared with regard to simulation feasibility, robustness and results accuracy. It is shown, that the CEL approach represents the most promising approach to describe the clinching process.

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Simulation‐aided development of a robust thermoclinching joining process for hybrid structures with textile reinforced thermoplastic composites and metallic components

Cited by 15 publications

References 10 publications

Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel Joining Technologies

Clinching of Thermoplastic Composites and Metals—A Comparison of Three Novel Joining Technologies

The State of the Art of Finite Element Analysis in Mechanical Clinching

Modelling of thermally supported clinching of fibre-reinforced thermoplastics: Approaches on mesoscale considering large deformations and fibre failure

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