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TECHNICAL PAPERS

New Experimental Results of a Single Ridge Passing Through an EHL Conjunction

[+] Author and Article Information
Armando Félix-Quiñonez, Pascal Ehret, Jonathan L. Summers

Engineering Fluid Mechanics Research Group, School of Mechanical Engineering, The University of Leeds, Leeds, LS2 9JT, United Kingdom

J. Tribol 125(2), 252-259 (Mar 19, 2003) (8 pages) doi:10.1115/1.1537268 History: Received August 14, 2001; Revised July 16, 2002; Online March 19, 2003
Copyright © 2003 by ASME
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References

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Venner,  C. H., and Lubrecht,  A. A., 1994, “Numerical Simulation of a Transverse Ridge in a Circular EHL Contact under Rolling/Sliding,” ASME J. Tribol., 116, pp. 751–761.
Greenwood,  J. A., and Morales-Espejel,  G. E., 1994, “The Behavior of Transverse Roughness in EHL Contacts,” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol., 208, pp. 121–132.
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Venner, C. H., Couhier, F., Lubrecht, A. A., and Greenwood, J. A., 1997, “Amplitude Reduction of Waviness in Transient EHL Line Contacts,” Proc. 23rd Leeds-Lyon Symp., Sept 1996, Elastohydrodynamics ’96: Fundamentals and Applications in Lubrication and Traction, D. Dowson et al., ed., Elsevier, Amsterdam, pp. 103–111.
Lubrecht,  A. A., Graille,  D., Venner,  C. H., and Greenwood,  J. A., 1998, “Waviness Amplitude Reduction in EHL Line Contacts under Rolling-Sliding,” ASME J. Tribol., 120(4), pp. 705–709.
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Ehret, P., Dowson, D., and Taylor, C. M., 1997, “Time-Dependent Solutions With Waviness and Asperities in EHL Point Contacts,” Proc. 23rd Leeds-Lyon Symp., Sept 1996, Elastohydrodynamics ’96: Fundamentals and Applications in Lubrication and Traction, D. Dowson et al., ed., Elsevier, Amsterdam, pp. 313–324.
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Figures

Grahic Jump Location
Ball on disc apparatus.
Grahic Jump Location
Digitised interferogram and corresponding film thickness contour. Ridge moves from left to right.
Grahic Jump Location
Interferograms and mid-plane profiles of the film thickness for pure rolling conditions, S=0% and Ue=0.025 m/s. Ridge moves from left to right
Grahic Jump Location
Changes in the geometry of the ridge as a function of rolling speed
Grahic Jump Location
Interferograms and mid-plane profiles of the film thickness for positive sliding conditions, S=50% and Ue=0.025 m/s. Ridge moves from left to right
Grahic Jump Location
Interferograms and mid-plane profiles of film thickness with negative sliding conditions, S=−50% and Ue=0.025 m/s. Ridge moves from left to right
Grahic Jump Location
Film thickness fluctuations underneath the defect with regard to its position inside the contact area. Ue=0.025 m/s
Grahic Jump Location
Interferograms and contour maps of film thickness with constant entraining speed Ue=0.025 m/s and increasing negative sliding conditions. Ridge moves from left to right
Grahic Jump Location
Lubricant overcoming the ridge with increasing negative sliding conditions and constant entraining speed Ue=0.025 m/s. Ridge moves from left to right

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