The experimental observation of the inlet dimple of the elastohydrodynamic lubrication (EHL) film was carried out in point and elliptical contacts, respectively, and then, the numerical analysis under point contacts was conducted. The inlet dimple appears and then moves upstream toward the inlet and finally disappears with the increase of the entrainment speed. In the meantime, the dimple depth increases at the beginning and then decreases. The high load leads to a wide entrainment speed range where dimple exists. The varying range of the entrainment speed corresponding to the dimple appearance is smaller at a smaller included angle between the minor axis of elliptical contact and the entrainment direction.
Issue Section:
Elastohydrodynamic Lubrication
References
1.
Dowson
, D.
, Higginson
, G.
, and Archard
, J.
, 1977
, Elastohydrodynamic Lubrication, SI Edition
, Pergamon Press
, Oxford, UK
.2.
Cameron
, A.
, and Gohar
, R.
, 1966
, “Theoretical and Experimental of Studies of the Oil Film in the Lubricated Point Contact
,” Proc. R. Soc. London A
, pp. 291
–520
.3.
Foord
, C. A.
, Wedeven
, L. D.
, Westlake
, F. J.
, and Cameron
, A.
, 1969
–1970
, “Optical Elastohydrodynamics
,” Proc. Inst. Mech. Eng.
, 184
(1
), pp. 487
–505
.4.
Chiu
, Y. P.
, and Sibley
, L. B.
, 1972
, “Contact Shape and Non-Newtonian Effects in Elastohydrodynamic Point Contacts
,” ASLE Lubr. Eng.
, 28
, pp. 48
–60
.5.
Kaneta
, M.
, Nishikawa
, H.
, Kameishi
, K.
, Sakai
, T.
, and Ohno
, N.
, 1992
, “Effects of Elastic Moduli of Contact Surfaces in Elastohydrodynamic Lubrication
,” ASME J. Tribol.
, 114
(1), pp. 75
–80
.6.
Kaneta
, M.
, Nishikawa
, H.
, Kanada
, T.
, and Matsuda
, K.
, 1996
, “Abnormal Phenomena Appearing in EHL Contacts
,” ASME J. Tribol.
, 118
(4
), pp. 886
–892
.7.
Lord
, J.
, Jolkin
, A.
, Larsson
, R.
, and Marklund
, O.
, 2000
, “A Hybrid Film Thickness Evaluation Scheme Based on Multi-Channel Interferometry and Contact Mechanics
,” ASME J. Tribol.
, 122
(1
), pp. 16
–22
.8.
Ehret
, P.
, and Bauget
, F.
, 2001
, “Observation of Kaneta's Dimples in Elastohydrodynamic Lubrication Contacts
,” Proc. Inst. Mech. Eng., Part J
, 215
(3
), pp. 289
–300
.9.
Yang
, P.
, Qu
, S.
, Kaneta
, M.
, and Nishikawa
, H.
, 2001
, “Formation of Steady Dimples in Point TEHL Contacts
,” ASME J. Tribol.
, 123
(1
), pp. 42
–49
.10.
Yang
, P.
, Qu
, S.
, Chang
, Q.
, and Guo
, F.
, 2001
, “On the Theory of Thermal Elastohydrodynamic Lubrication at High Slide-Roll Ratios-Line Contact Solution
,” ASME J. Tribol.
, 123
(1
), pp. 36
–41
.11.
Qu
, S.
, Yang
, P.
, and Guo
, F.
, 2000
, “Theoretical Investigation on the Dimple Occurrence in the Thermal EHL of Simple Sliding Steel-Glass Circular Contacts
,” Tribol. Int.
, 33
(1
), pp. 59
–65
.12.
Guo
, F.
, Yang
, P.
, and Qu
, S.
, 2001
, “On the Theory of Thermal Elastohydrodynamic Lubrication at High Slide-Roll Ratios—Circular Glass-Steel Contact Solution at Opposite Sliding
,” ASME J. Tribol.
, 123
(4
), pp. 816
–821
.13.
Lee
, R. T.
, and Hamrock
, B. J.
, 1990
, “A Circular Non-Newtonian Fluid Model: Part I—Used in Elastohydrodynamic Lubrication
,” ASME J. Tribol.
, 112
(3
), pp. 486
–496
.14.
Shieh
, J.
, and Hamrock
, B. J.
, 1991
, “Film Collapse in EHL and Micro-EHL
,” ASME J. Tribol.
, 113
(2
), pp. 372
–377
.15.
Ehret
, P.
, Dowson
, D.
, and Taylor
, C. M.
, 1998
, “On Lubricant Transport Conditions in Elastohydrodynamic Conjunctions
,” Proc. R. Soc. London A
, 454
(1971
), pp. 763
–787
.16.
Zhang
, Y. B.
, and Wen
, S.
, 2002
, “An Analysis of Elastohydrodynamic Lubrication With Limiting Shear Stress: Part I—Theory and Solutions
,” STLE Tribol. Trans.
, 45
(2
), pp. 135
–144
.17.
Stahl
, J.
, and Jacobson
, B. O.
, 2003
, “A Lubricant Model Considering Wall-Slip in EHL Line Contacts
,” ASME J. Tribol.
, 125
(3
), pp. 523
–532
.18.
Hsiao
, H. S.
, and Hamrock
, B. J.
, 1992
, “A Complete Solution for Thermal Elastohydrodynamic Lubrication of Line Contacts Using Circular Non-Newtonian Fluid Model
,” ASME J. Tribol.
, 114
(3
), pp. 540
–552
.19.
Guo
, F.
, and Wong
, P. L.
, 2004
, “Experimental Observation of a Dimple-Wedge Elastohydrodynamic Lubricating Film
,” Tribol. Int.
, 37
(2
), pp. 119
–127
.20.
Guo
, F.
, and Wong
, P. L.
, 2006
, “Variations of an EHL Film Under Boundary Slippage
,” IUTAM
Symposium on Elastohydrodynamics and Micro-Elastohydrodynamics
, R. W.
Snidle
, and H. Y.
Evans
, eds., Cardiff, UK, Sept. 1–3, pp. 285
–296
.21.
Guo
, F.
, and Wong
, P. L.
, 2002
, “A Multi-Beam Intensity-Based Approach for Lubricant Film Measurements in Non-Conformal Contacts
,” Proc. Inst. Mech. Eng., Part J
, 216
(5
), pp. 281
–291
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