Starved Lubrication of Elliptical EHD Contacts

[+] Author and Article Information
B. Damiens, A. A. Lubrecht

Laboratoire de Mécanique des Contacts, UMR CNRS 5514, INSA de Lyon, France

C. H. Venner

University of Twente, Tribology Group, The Netherlands

P. M. E. Cann

Department of Mechanical Engineering, Tribology Section, Imperial College, London SW7 2BX, UK

J. Tribol 126(1), 105-111 (Jan 13, 2004) (7 pages) doi:10.1115/1.1631020 History: Received May 08, 2002; Revised October 08, 2002; Online January 13, 2004
Copyright © 2004 by ASME
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Grahic Jump Location
Film thickness as a function of speed (circular contact)—starvation occurs at 0.06 [m/s], full line h∝u0.67
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Elliptical contact in the dimensionless domain D
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R=f(r) for a circular contact with M=10 and L=20,γ=2.66
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γ as a function of M for a circular contact for L=2, 5, 10, 20, r≃1
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γ as a function of M/L for a circular contact for r≃1,L=2, 5, 10, 20, and M=10, 30, 100, 300, 1000, r≃1
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γ as a function of M/L for different ellipticities: κ=0.14, 0.22, 0.35, 0.63, 1.00, r≃1
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Starved elliptical contact
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Experimental film decay for a circular contact κ=1(um=96.6 mms−1)
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Experimental film decay for an elliptical contact κ=0.270(um=39.8 mms−1)
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Experimental γ values as a function of M/L for a circular (κ=1) and elliptical (κ=0.27) contact.
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γ as a function of M/L for a circular contact κ=1. Lines and open symbols are numerical predictions.
Grahic Jump Location
γ as a function of M/L for an elliptical contact κ=0.270. Lines and open symbols are numerical predictions.
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R as a function of γ and r



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