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TECHNICAL PAPERS

The Influence of Lubricant Film Thickness on Friction Coefficients During Slow Speed Deep Drawing Operations

[+] Author and Article Information
K. R. Gilmour, S. Paul, A. G. Leacock

School of Electrical and Mechanical Engineering, Faculty of Engineering, University of Ulster, Jordanstown, Northern Ireland

J. Tribol 124(4), 846-851 (Sep 24, 2002) (6 pages) doi:10.1115/1.1330732 History: Received November 22, 1999; Revised August 01, 2000; Online September 24, 2002
Copyright © 2002 by ASME
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References

Wilson,  W. R. D., 1990, “Mised Lubrication in Metal Forming Processes,” Adv. Technol. Plast., 4, pp. 1667–1676.
Emmens, W. C., 1988, “The Influence of Surface Roughness on Friction,” Proc. 15th Biennial I.D.D.R.G. Congress, Detroit, Michigan, May 16–18, pp. 63–70.
Schipper, D. J., 1988, “Transitions in the Lubrication of Concentrated Contact,” Ph.D. thesis, University of Twente.
Hsu,  T. C., 1994, “Refined Models for Hydrodynamic Lubrication in Axisymmetric Stretch Forming,” ASME J. Tribol., 116, pp. 101–109.
Mahdavian,  S. M., and Shao,  Z. M., 1993, “Isoviscous Hydrodynamic Lubrication of Deep Drawing and Its Comparison with Experiment,” ASME J. Tribol., 115, pp. 111–118.
Emmens, W. C., and Monfort, G., 1990, “The Influence of Process Conditions and Surface Characteristics on Friction at Low Pressure,” 3rd Int. Conf. On Technology of Plasticity, July.
Abbott,  E. J., and Firestone,  F. A., 1933, “Specifying Surface Quality, A Method Based on Accurate Measurement and Comparison,” Mech. Eng., 55, pp. 569–573.
Boyd, M. R., 1996, “An Investigation of the Friction and Lubrication Effects in the Deep Drawing Process Through Simulative and Empirical Testing,” D. Phil. thesis, University of Ulster.
Paul, S. J., 1996, “Kinetic Friction of Lubricated Contacts in the Deep Drawing Process,” D.Phil. thesis, University of Ulster, p. 88.
Gilmour, K. R., 1989, “Simulative Testing as an Aid to the Industrial Development of Deep Drawn Complex Forms,” D.Phil. thesis, 1 , University of Ulster, pp. 98–145.

Figures

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Typical contact geometry at tool/blank interface
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A rectangular interface
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Conventional graph illustrating the effect of prior loading duration on the kinetic friction curve
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New graph illustrating the effect of prior loading duration on the kinetic friction curve
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Graph illustrating the fit of the averaged drawing load growth curve through additional data
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Flowchart illustrating modified kinetic friction model
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Separation between blankholder and workpiece versus total loading duration
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Graph illustrating partial bearing area curve of specimen surface
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Comparison of simulation model results with empirical data

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