The Spacer Layer Imaging method has been used to investigate the influence of three-dimensional roughness features on the thickness and shape of elastohydrodynamic (EHL) films. An array of near-hemispherical bumps was employed to represent asperities. A micro-EHL film developed at the bumps whose orientation depended on that of the inlet boundary at the location at which the bump had entered the contact. Rolling-sliding conditions induced a micro-EHL film with a classical horseshoe shape at the bumps. The flow of lubricant around the bumps appeared to differ between thin and thick films.
Issue Section:
Technical Papers
1.
Jackson
, A.
, and Cameron
, A.
, 1976
, “An interferometric Study of the EHL of Rough Surfaces
,” ASLE Trans.
, 19
, pp. 50
–60
.2.
Wedeven
, L. D.
, and Cusano
, C.
, 1979
, “Elastohydrodynamic Film Thickness Measurements of Artificially Produced Surface Dents and Grooves
,” ASLE Trans.
, 22
(4
), pp. 369
–329
.3.
Cusano
, C.
, and Wedeven
, L. D.
, 1982
, “The Effects of Artificially-Produced Defects on the Film Thickness Distribution in Sliding EHD Point Contacts
,” ASME J. Lubr. Technol.
, 104
, pp. 365
–375
.4.
Kaneta
, M.
, and Nishikawa
, H.
, 1994
, “Local Reduction in Thickness of Point Contact EHL Films Caused by a Transversely Oriented Moving Groove and Its Recovery
,” ASME J. Tribol.
, 116
, pp. 635
–639
.5.
Kaneta
, M.
, Sakai
, T.
, and Nishikawa
, H.
, 1992
, “Optical Interferometric Observations of the Effects of a Bump on Point Contact EHL
,” ASME J. Tribol.
, 114
, pp. 779
–784
.6.
Kaneta
, M.
, Sakai
, T.
, and Nishikawa
, H.
, 1993
, “Effects of Surface Roughness on Point Contact EHL
,” Tribol. Trans.
, 36
, pp. 605
–612
.7.
de Silva, G. M. S., Leather, J. A., and Sayles, R. S., 1985, “The Influence of Surface Topography on the Lubricant Film Thickness in an Elastohydrodynamic (EHD) Point Contact,” Proc. 12th Leeds-Lyon Symposium, D. Dowson et al., eds., Butterworths, London, pp. 258–272.
8.
Kaneta
, M.
, and Cameron
, A.
, 1980
, “Effects of Asperities in Elastohydrodynamic Lubrication
,” ASME J. Lubr. Technol.
, 102
, pp. 374
–379
.9.
Cann
, P. M.
, Hutchinson
, J.
, and Spikes
, H. A.
, 1996
, “The Development of a Spacer Layer Imaging Method (SLIM) for Mapping Elastohydrodynamic Contacts
,” Tribol. Trans.
, 39
, pp. 915
–921
.10.
Guangteng, G., Cann, P. M., Spikes, H. A., and Olver, A. V., 1999, “Mapping Surface Features in the Thin Film Lubrication Regime,” Proc. 25th Leeds-Lyon Symposium, D. Dowson et al., eds., Elsevier Science B. V., Amsterdam, pp. 175–183.
11.
Guangteng
, G.
, Cann
, P. M.
, Olver
, A. V.
, and Spikes
, H. A.
, 2000
, “Lubricant Film Thickness in Rough Surface, Mixed Elastohydrodynamic Contact
,” ASME J. Tribol.
, 122
, pp. 65
–76
.12.
Olver, A. V., Guangteng, G., and Spikes, H. A., 2000, “Film Thickness and Pressure in Micro-EHD Contacts,” 26th Leeds-Lyon Symposium on Tribology, D. Dowson et al., eds., Elsevier Science B. V., Amsterdam, pp. 503–510.
13.
Chang
, L.
, Jackson
, A.
, and Webster
, M. N.
, 1994
, “Effects of 3-D Surface Topography on the EHL Film Thickness and Film Breakdown
,” Tribol. Trans.
, 37
, pp. 435
–444
.14.
Hooke, C. J., 1999, “Surface Roughness Modification in EHL Line Contacts—The Effects of Roughness Wavelength, Orientation and Operating Conditions,” Proc. 25th Leeds-Lyon Symposium, D. Dowson et al., eds., Elsevier Science B. V., Amsterdam, pp. 193–202.
15.
Lubrecht
, A. A.
, and Venner
, C. H.
, 1999
, “Elastohydrodynamic Lubrication of Rough Surfaces
,” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol.
, 213
, pp. 397
–404
.16.
Venner, C. H., Kaneta, M., Nishikawa, H., and Jacod, B., 2000, “Effects of Waviness on the Film Thickness in a Circular EHL Contact Under Rolling/Sliding,” Proc. of the International Tribology Conference, Nagasaki, I, Japanese Society of Tribologists, Tokyo, Japan, pp. 631–636.
17.
Kweh
, C. C.
, Patching
, M. J.
, Evans
, H. P.
, and Snidle
, R. W.
, 1992
, “Simulation of Elastohydrodynamic Contacts Between Rough Surfaces
,” ASME J. Tribol.
, 114
, pp. 412
–419
.18.
Zhu, D., and Hu, Y. Z., 2000, “Effects of Rough Surface Topography and Orientation on the EHD and Mixed Lubrication Characteristics,” Proc. of the International Tribology Conference, Nagasaki, I, Japanese Society of Tribologists, Tokyo, Japan, pp. 625–630.
19.
Johnston
, G. J.
, Wayte
, R.
, and Spikes
, H. A.
, 1991
, “The Measurement and Study of Very Thin Lubricant Films in Concentrated Contacts
,” Tribol. Trans.
, 34
, pp. 187
–194
.20.
Choo, J. W., Olver, A. V., and Spikes, H. A., 2003, “Influence of Surface Roughness Features on Mixed Film Lubrication,” Lubr. Sci., in press.
21.
Sayles
, R. S.
, Hamer
, J. C.
, and Ioannides
, E.
, 1990
, “The Effects of Particulate Contamination in Rolling Bearings—A State of the Art Review
,” Proc. Inst. Mech. Eng.
, 204
(G
), pp. 29
–36
.Copyright © 2003
by ASME
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