Abstract
The interaction and surface features between point contact surfaces composed of longitudinal roughness with infinite or finite length and transverse roughness were discussed based on a transient non-Newtonian thermal elastohydrodynamic lubrication (EHL) model. Each surface shape is greatly affected by the difference in elastic moduli, thermal conductivities, and velocities of both contact surfaces. There is a large difference in pressure behavior when the transverse roughness is in contact with the longitudinal roughness with finite length and when it is in contact with the longitudinal roughness with infinite length. In the contact between surfaces with infinitely long longitudinal and transverse roughness, the friction coefficient is lower when the surface with longitudinal roughness has a low thermal conductivity than when it has a high thermal conductivity. Furthermore, the pressure fluctuation is larger when the transverse roughness surface has a high thermal conductivity than when it has a low thermal conductivity.
References
1.
Dowson
, D.
, and Higginson
, G. R.
, 1966
, Elastohydrodynamic Lubrication, the Fundamentals of Roller and Gear Lubrication
, Pergamon
, Oxford
.2.
Fowles
, P. E.
, 1971
, “A Thermal Elastohydrodynamic Theory for Individual Asperity–Asperity Collisions
,” J. Lubr. Technol.
, 93
(3
), pp. 383
–397
. 10.1115/1.34516033.
Ai
, X.
, and Zheng
, L.
, 1989
, “A General Model for Microelastohydrodynamic Lubrication and Its Full Numerical Solution
,” ASME J. Tribol.
, 111
(4
), pp. 569
–576
. 10.1115/1.32619794.
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
(3
), pp. 435
–444
. 10.1080/104020094089833155.
Holmes
, M. J. A.
, Evans
, H. P.
, Hughes
, T. G.
, and Snidle
, R. W.
, 2003
, “Transient Elastohydrodynamic Point Contact Analysis Using a New Coupled Differential Deflection Method. Part 2: Results
,” Proc. Inst. Mech. Eng., Part J
, 217
(4
), pp. 305
–321
. 10.1243/1350650037686186506.
Cui
, J.
, and Yang
, P.
, 2004
, “Transient Thermo-EHL Theory of Point Contact—The Process of a Bump on the Fast Surface Passing a Bump on the Slower Surface
,” Proceedings of the 30th Leeds-Lyon Symposium on Tribol
, G. Dalmaz, eds., Elsevier
, Amsterdam
, pp. 253
–261
.7.
Yang
, P.
, Cui
, J.
, Jin
, Z. M.
, and Dowson
, D.
, 2008
, “Influence of Two-Sided Surface Waviness on the EHL Behavior of Rolling/Sliding Point Contacts Under Thermal and Non-Newtonian Conditions
,” ASME J. Tribol.
, 130
(4
), p. 041502
. 10.1115/1.29580788.
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
. 10.1115/1.13323999.
Kaneta
, M.
, and Yang
, P.
, 2003
, “Effects of Thermal Conductivity of Contacting Surfaces on Point EHL Contacts
,” ASME J. Tribol.
, 125
(4
), pp. 731
–738
. 10.1115/1.154012110.
Kaneta
, M.
, Yang
, P.
, Krupka
, I.
, and Hartl
, M.
, 2015
, “Fundamentals of Thermal Elastohydrodynamic Lubrication in Si3N4 and Steel Circular Contacts
,” Proc. Inst. Mech. Eng., Part J
, 229
(8
), pp. 929
–939
. 10.1177/135065011456567911.
Kaneta
, M.
, Sperka
, P.
, Yang
, P.
, Krupka
, I.
, Yang
, P.
, and Hartl
, M.
, 2018
, “Thermal Elastohydrodynamic Lubrication of Ceramic Materials
,” STLE Tribol. Trans.
, 61
(5
), pp. 869
–879
. 10.1080/10402004.2018.143749212.
Cui
, J.
, Yang
, P.
, Kaneta
, M.
, and Krupka
, I.
, 2017
, “Numerical Study on the Interaction of Transversely Oriented Ridges in Thermal Elastohydrodynamic Lubrication Point Contacts Using the Eyring Shear-Thinning Model
,” Proc. Inst. Mech. Eng., Part J
, 231
(1
), pp. 93
–106
. 10.1177/135065011664694313.
14.
Björling
, M.
, Isaksson
, P.
, Marklund
, P.
, and Larsson
, R.
, 2012
, “The Influence of DLC on EHL Friction Coefficient
,” Tribol. Lett.
, 47
(2
), pp. 285
–294
. 10.1007/s11249-012-9987-715.
Björling
, M.
, Habchi
, W.
, Bair
, S.
, Larsson
, R.
, and Marklund
, P.
, 2014
, “Friction Reduction in Elastohydrodynamic Contacts by Thin Layer Thermal Insulation
,” Tribol. Lett.
, 53
(2
), pp. 477
–486
. 10.1007/s11249-013-0286-816.
Habchi
, W.
, 2014
, “A Numerical Model for the Solution of Thermal Elastohydrodynamic Lubrication in Coated Circular Contacts
,” Tribol. Int.
, 73
, pp. 57
–68
. 10.1016/j.triboint.2014.01.00217.
Krupka
, I.
, Hartl
, M.
, Matsuda
, K.
, Nishikawa
, H.
, Wang
, J.
, Guo
, F.
, Yang
, P.
, and Kaneta
, M.
, 2019
, “Deformation of Rough Surfaces in Point EHL Contacts
,” Tribol. Lett.
, 67
(2
), p. 33
. 10.1007/s11249-019-1145-z18.
Kaneta
, M.
, Matsuda
, K.
, Wang
, J.
, and Yang
, P.
, 2020
, “Numerical Study on Effect of Dimples on Tribo-Characteristics in Non-Newtonian Thermal Elastohydrodynamic Lubrication Point Contacts With Different Mechanical and Thermal Properties
,” ASME J. Tribol.
, 142
(4
), p. 041601
. 10.1115/1.404563819.
Kaneta
, M.
, Matsuda
, K.
, Wang
, J.
, and Yang
, P.
, 2020
, “Numerical Study on Effect of Thermal Conductivity in Point Contacts With Longitudinal Roughness on Abnormal Pressure Distribution
,” ASME J. Tribol.
, 142
(12
), p. 121601
. 10.1115/1.404730020.
Bair
, S.
, 2004
, “Actual Eyring Models for Thixotropy and Shear-Thinning: Experimental Validation and Application to EHD
,” ASME J. Tribol.
, 126
(4
), pp. 728
–732
. 10.1115/1.179269321.
Habchi
, W.
, Vergne
, P.
, Bair
, S.
, Andersson
, O.
, Eyheramendy
, D.
, and Morales-Espejel
, G. E.
, 2010
, “Influence of Pressure and Temperature Dependence of Thermal Properties of a Lubricant on the Behaviour of Circular TEHD Contacts
,” Tribol. Int.
, 43
(10
), pp. 1842
–1850
. 10.1016/j.triboint.2009.10.00222.
Habchi
, W.
, and Bair
, S.
, 2013
, “Quantitative Compressibility Effects in Thermal Elastohydrodynamic Circular Contacts
,” ASME J. Tribol.
, 135
(1
), p. 011502
. 10.1115/1.402308223.
Larsson
, R.
, Larsson
, P. O.
, Eriksson
, E.
, Sjöberg
, M.
, and Höglund
, E.
, 2000
, “Lubricant Properties for Input to Hydrodynamic and Elastohydrodynamic Lubrication Analyses
,” Proc. Inst. Mech. Eng., Part J
, 214
(1
), pp. 17
–27
. 10.1243/135065000154298124.
Larsson
, R.
, and Andersson
, O.
, 2000
, “Lubricant Thermal Conductivity and Heat Capacity Under High Pressure
,” Proc. Inst. Mech. Eng., Part J
, 214
(4
), pp. 337
–342
. 10.1243/135065000154322325.
Kumar
, P.
, and Khonsari
, M. M.
, 2009
, “Traction in EHL Line Contacts Using Free Volume Pressure–Viscosity Relationship With Thermal and Shear-Thinning Effects
,” ASME J. Tribol.
, 131
(1
), p. 011503
. 10.1115/1.300233126.
Yang
, P.
, and Wen
, S.
, 1990
, “A Generalized Reynolds Equation for Non-Newtonian Thermal Elastohydrodynamic Lubrication
,” ASME J. Tribol.
, 112
(4
), pp. 631
–636
. 10.1115/1.292030827.
Ohno
, N.
, 2007
, “High-Pressure Behavior of Toroidal CVT Fluid for Automobile
,” Tribol. Int.
, 40
(2
), pp. 233
–238
. 10.1016/j.triboint.2005.09.01528.
Liu
, X.
, Jiang
, M.
, Yang
, P.
, and Kaneta
, M.
, 2005
, “Non-Newtonian Thermal Analyses of Point EHL Contacts Using the Eyring Model
,” ASME J. Tribol.
, 127
(1
), pp. 70
–81
. 10.1115/1.184316129.
Venner
, C. H.
, and Lubrecht
, A. A.
, 2000
, Multilevel Methods in Lubrication
, Elsevier
, Amsterdam
.30.
Reddyhoff
, T.
, Schmidt
, A.
, and Spikes
, H.
, 2019
, “Thermal Conductivity and Flash Temperature
,” Tribol. Lett.
, 67
(1
), p. 22
. 10.1007/s11249-018-1133-831.
Habchi
, W.
, and Bair
, S.
, 2020
, “The Role of the Thermal Conductivity of Steel in Quantitative Elastohydrodynamic Friction
,” Tribol. Int.
, 142
, p. 105970
. 10.1016/j.triboint.2019.10597032.
Liu
, H. C.
, Zhang
, B. B.
, Bader
, N.
, Poll
, G.
, and Venner
, C. H.
, 2020
, “Influences of Solid and Lubricant Thermal Conductivity on Traction in an EHL Circular Contact
,” Tribol. Int.
, 146
(10
), p. 106059
. 10.1016/j.triboint.2019.106059Copyright © 2020 by ASME
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