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TECHNICAL PAPERS

Elastohydrodynamic Film Collapse During Rapid Deceleration. Part II—Theoretical Analysis and Comparison of Theory and Experiment

[+] Author and Article Information
R. P. Glovnea, H. A. Spikes

Tribology Section, Imperial College of Science, Technology and Medicine, London, United Kingdom

J. Tribol 123(2), 262-267 (Feb 11, 2000) (6 pages) doi:10.1115/1.1308012 History: Received October 25, 1999; Revised February 11, 2000
Copyright © 2001 by ASME
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References

Glovnea,  R. P., and Spikes,  H. A., 2001, “Elastohydrodynamic film collapse during rapid deceleration. Part I: Experimental results,” Trans. ASME J. Tribol., 123, pp. 254–261.
Diaconescu,  E. N., and Glovnea,  R. P., 1994, “A new one dimensional Reynolds equation for unsteady speed regime,” Acta Tribol., 2, pp. 89–96.
Glovnea,  R. P., Diaconescu,  E. N., and Flamand,  L., 1995, “EHD film thickness under transient speed conditions,” Acta Tribol., 3, pp. 31–36.
Westlake, F. J., and Cameron, A., 1972, “Interferometric study of point con-tact lubrication,” Proc. Inst. Mech. Eng. Elastohydrodynamic Lubrication Symposium, pp. 153–159.
Sugimura,  J., Okumura,  T., Yamamoto,  Y., and Spikes,  H. A., 1999, “Simple equation for elastohydrodynamic film thickness under acceleration,” Tribol. Int., 32, pp. 117–123.
Hamrock, B. T., and Dowson, D. 1981, Ball Bearing Lubrication: The Elastohydrodynamics of Elliptical Contacts, Wiley, New York.
Cameron, A., 1966, The Principles of Lubrication, Longmans, London.
Johnson, K. L., 1985, Contact Mechanics, Cambridge University Press, Cambridge.

Figures

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Film thickness profiles for PAO during halting over 30 ms from initial entrainment speed 0.4 m/s
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Comparison of measured film thickness collapse with prediction of Eq. (8) (deceleration 75 m/s2 in pure sliding)
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Comparison of measured film thickness collapse with prediction of Eq. (8)
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Comparison of measured film thickness collapse with prediction of Eq. (8) (deceleration 10 m/s2 in pure sliding)
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Comparison of measured film thickness collapse with prediction of Eq. (8) (deceleration 13.3 m/s2 in pure rolling)
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Comparison of measured film thickness collapse with prediction of Eq. (8) (deceleration 0.5 m/s2 in pure sliding)
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Comparison of measured film thickness collapse with prediction of Eq. (8) (deceleration 0.67 m/s2 in pure rolling)
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Comparison of measured results with predictions
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Forces acting on x direction upon an elementary volume

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