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http://dx.doi.org/10.5228/KSPP.2007.16.8.603

A Study on the Forming Characteristics of Clinching Joint Process  

Jayasekara, V.R. (인하대학교 대학원)
Noh, J.H. (인하대학교 대학원)
Hwang, B.B. (인하대학교 기계공학부)
Ham, K.C. (인하공업전문대학 기계설계과)
Jang, D.H. (인하공업전문대학 기계설계과)
Publication Information
Transactions of Materials Processing / v.16, no.8, 2007 , pp. 603-613 More about this Journal
Abstract
This paper is concerned with joining of thin metal sheets by single stroke clinching process. This method has been used in sheet metal work as it is a simple process and offers the possibility of joining similar-dissimilar thin sheet metals. Clinching generates a joint by overlapping metal sheets deforming plastically by punching and squeezing sequence. AA 5754 aluminum alloy of 0.5 mm thick sheets have been selected as a modal material and the process has been simulated under different process conditions and the results have been analyzed in terms of the quality of clinch joints which are influenced mainly by tool geometries. The rigid-plastic finite element method is applied to analyses in this paper. Analysis is focused mainly on investigation of deformation and material flow patterns influenced by major geometrical parameters such as die diameter, die depth, groove width, and groove corner radius, respectively. To evaluate the quality of clinch joints, four controlling or evaluation parameters have been chosen and they are bottom, neck thickness of bottom and top sheets, and undercut thickness, respectively. It has been concluded from the simulation results that the die geometries such as die depth and diameters are the most decisive process parameters influencing on the quality of clinch joints, and the bottom thickness is the most important evaluation parameter to determine if the quality of clinch joints satisfies the demand for industrial application.
Keywords
Clinching Joints; Evaluation Parameters; AA 5754 Aluminum Alloys; Process Parameters;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 SFTC, 2004, DEFROM-3D Ver. 5.0 Users Manual (Scientific Forming Technologies Corporation Inc.,U.S.A.)
2 D. H. Jang, B. B. Hwang, 2003, Rigid Plastic FE Modeling of Frictional Contact Problems based on a Penalty Method, Trans. of Mat. Processing, Vol. 12, No. 1, pp. 34-42   DOI   ScienceOn
3 ATTEXOR Tools S.A, Chemin des Larges Pires B, CH-1024 Ecublens, Switzerland
4 Adam Cort, 2002, In a clinch, Assembly magazine, BNP Media
5 Juha varies, 2006, Ensuring the integrity in clinching process, J. Materials Processing Technology Vol. 174, pp.277-285   DOI   ScienceOn
6 P.Hrycaj, 1991, S.Cescotto, J.Oudin, Elasto-plastic Finite Element Analysis of Unilateral Contact with Generalized Coulomb Friction, Engineering computation Vol. 8, pp. 291-303   DOI
7 D. H. Jang, B. B Hwang, 2005, An Analysis of the Riveting Process as 2-D Frictional Contact Problem, Materials Science Forum Vol. 475-479, pp. 3255- 3259
8 M. Carboni, S. Bereetta, M. Monno, 2006, Fatigue behavior of tensile-shear loaded clinch joints, Engineering Fracture Mechanics Vol. 73, pp. 179-181
9 SFTC,2004, DEFROM-2D Ver. 8.0 Users Manual (Scientific Forming Technologies Corporation Inc., U.S.A.)
10 P. O. Bouchard, 2006, Numerical modeling of selfpierce riveting, ESAFORM Bulletin, The European Scientific Association for material forming, Vol. 6, No.1, pp. 4-7
11 Overview of TOX clinching technology, TOX-Pressotechnik GmbH, St. Andreasberg, Germany
12 J. P. Varis, 2003, The suitability of clinching as a joining method for high-strength structural steel, J. Materials Processing Technology Vol. 132, pp. 242-249   DOI   ScienceOn
13 J. P. Varis, J. Lepisto, 2003, A simple testing based procedure and simulation of the clinching process using finite element analysis for establishing clinching parameter, Thin-Walled Structures Vol. 41, pp. 691-709   DOI   ScienceOn