Predicting the mixed thermal lubrication performance and fatigue life of point contact components becomes more and more important with the increasing demand for the load capacity of machinery. To achieve this, a deterministic mixed thermal elastohydrodynamic lubrication (TEHL) model in point contacts considering surface roughness is developed in this study. This model is capable of determining the pressure and temperature under different lubrication regimes from mixed to full-film lubrication. Then, the established model is extended to the subsurface stress and fatigue life predictions. Numerical simulations are conducted to analyze the lubrication characteristics and fatigue life for the three-dimensional (3D) sinusoidal surfaces with variable directions. Results show that increasing entraining velocity contributes to the reduction of pressure fluctuation and prolongation of fatigue life. However, the resulting temperature increases with the entraining velocity. As for the influence of lubricant viscosity, increasing it prolongs the fatigue life, especially under mixed TEHL conditions. What's more, the effect of rough surface texture feature on fatigue life has a close relationship with the lubrication regime.
Issue Section:
Elastohydrodynamic Lubrication
References
1.
Patir
, N.
, and Cheng
, H. S.
, 1978
, “An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication
,” ASME J. Lubr. Technol
, 100
(1
), pp. 12
–17
.2.
Zhu
, D.
, and Cheng
, H. S.
, 1988
, “Effect of Surface Roughness on Point Contact EHL
,” ASME J. Tribol.
, 110
(1
), pp. 32
–37
.3.
Zhu
, D.
, and Hu
, Y. Z.
, 2001
, “Effects of Rough Surface Topography and Orientation on the Characteristics of EHD and Mixed Lubrication in Both Circular and Elliptical Contacts
,” Tribol. Trans.
, 44
(3
), pp. 391
–398
.4.
Wang
, W. Z.
, Chen
, H.
, Hu
, Y. Z.
, and Wang
, H.
, 2006
, “Effect of Surface Roughness Parameters on Mixed Lubrication Characteristics
,” Tribol. Int.
, 39
(6
), pp. 522
–527
.5.
Li
, S.
, and Kahraman
, A.
, 2009
, “A Mixed EHL Model With Asymmetric Integrated Control Volume Discretization
,” Tribol. Int.
, 42
(8
), pp. 1163
–1172
.6.
Kaneta
, M.
, Yamada
, T.
, and Wang
, J.
, 2008
, “Micro-Elastohydrodynamic Lubrication of Simple Sliding Elliptical Contacts With Sinusoidal Roughness
,” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol.
, 222
(3
), pp. 395
–405
.7.
Lai
, W. T.
, and Cheng
, H. S.
, 1985
, “Temperature Analysis in Lubricated Simple Sliding Rough Contacts
,” Tribol. Trans.
, 28
(3
), pp. 303
–312
.8.
Qiu
, L.
, and Cheng
, H. S.
, 1998
, “Temperature Rise Simulation of Three-Dimensional Rough Surface in Mixed Lubricated Contact
,” ASME J. Tribol.
, 120
(2
), pp. 310
–318
.9.
Gao
, J.
, Lee
, S. C.
, Ai
, X.
, and Nixon
, H.
, 2000
, “An FFT-Based Transient Flash Temperature Model for General Three-Dimensional Rough Surface Contacts
,” ASME J. Tribol.
, 122
(3
), pp. 519
–523
.10.
Zhao
, J.
, and Sadeghi
, F.
, 2001
, “Analysis of EHL Circular Contact Start Up—Part II: Surface Temperature Rise Model and Results
,” ASME J. Tribol.
, 123
(1
), pp. 75
–82
.11.
Wang
, W. Z.
, Hu
, Y. Z.
, Liu
, Y. C.
, and Wang
, H.
, 2007
, “Deterministic Solutions and Thermal Analysis for Mixed Lubrication in Point Contacts
,” Tribol. Int.
, 40
(4
), pp. 687
–693
.12.
Wang
, W. Z.
, Liu
, Y. C.
, Wang
, H.
, and Hu
, Y. Z.
, 2004
, “A Computer Thermal Model of Mixed Lubrication in Point Contacts
,” ASME J. Tribol.
, 126
(1
), pp. 162
–170
.13.
Hu
, Y. Z.
, and Zhu
, D.
, 2000
, “A Full Numerical Solution to the Mixed Lubrication in Point Contacts
,” ASME J. Tribol.
, 122
(1
), pp. 1
–9
.14.
Zhu
, D.
, and Hu
, Y. Z.
, 2001
, “A Computer Program Package for the Prediction of EHL and Mixed Lubrication Characteristics, Friction, Subsurface Stresses and Flash Temperatures Based on Measured 3-D Surface Roughness
,” Tribol. Trans.
, 44
(3
), pp. 383
–390
.15.
Liu
, S. B.
, and Wang
, Q.
, 2001
, “A Three-Dimensional Thermomechanical Model of Contact Between Non-Conforming Rough Surfaces
,” ASME J. Tribol.
, 123
(1
), pp. 17
–26
.16.
Liu
, S. B.
, Wang
, Q.
, and Liu
, G.
, 2000
, “A Versatile Method of Discrete Convolution and FFT (DC-FFT) for Contact Analyses
,” Wear
, 243
(1–2
), pp. 101
–111
.17.
Deolalikar
, N.
, Sadeghi
, F.
, and Marble
, S.
, 2008
, “Numerical Modeling of Mixed Lubrication and Flash Temperature in EHL Elliptical Contacts
,” ASME J. Tribol.
, 130
(1
), p. 011004
.18.
Wang
, X. P.
, Liu
, Y. C.
, and Zhu
, D.
, 2016
, “Numerical Solution of Mixed Thermal Elastohydrodynamic Lubrication in Point Contacts With Three-Dimensional Surface Roughness
,” ASME J. Tribol.
, 139
(1
), p. 011501
.19.
Zhai
, X. J.
, Chang
, L.
, Hoeprich
, M. R.
, and Nixon
, H. P.
, 1997
, “On Mechanisms of Fatigue Life Enhancement by Surface Dents in Heavily Loaded Rolling Line Contacts
,” Tribol. Trans.
, 40
(4
), pp. 708
–714
.20.
Yan
, X. L.
, Wang
, X. L.
, and Zhang
, Y. Y.
, 2014
, “Influence of Roughness Parameters Skewness and Kurtosis on Fatigue Life Under Mixed Elastohydrodynamic Lubrication Point Contacts
,” ASME J. Tribol.
, 136
(3
), p. 031503
.21.
Li
, S.
, and Kahraman
, A.
, 2013
, “Micro-Pitting Fatigue Lives of Lubricated Point Contacts: Experiments and Model Validation
,” Int. J. Fatigue
, 48
, pp. 9
–18
.22.
Johnson
, K. L.
, 1996
, Contact Mechanics
, Cambridge University Press, Cambridge, UK
.23.
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
.24.
Kumar
, P.
, Khonsari
, M. M.
, and Bair
, S.
, 2008
, “Full EHL Simulations Using the Actual Ree-Eyring Model for Shear-Thinning Lubricants
,” ASME J. Tribol.
, 131
(1
), p. 011802.25.
Roelands
, C. J. A.
, Vlugter
, J.
, and Waterman
, H.
, 1963
, “The Viscosity-Temperature-Pressure Relationship of Lubricating Oils and Its Correlation With Chemical Constitution
,” ASME J. Basic Eng.
, 85
(4
), pp. 601
–607
.26.
Dowson
, D.
, and Higginson
, G. R.
, 1966
, Elastohydrodynamic Lubrication: Fundamentals of Roller and Gear Lubrication
, Pergamon Press
, Oxford, UK
.27.
Rabinowicz
, E.
, 1980
, “Friction Especially Low Friction
,” Proceedings of the International Conference on the Fundamentals of Tribology
, N. P.
Suh
, and N.
Saka
, eds., MIT Press
, Cambridge, MA
, pp. 351
–364
.28.
Wang
, W. Z.
, Wang
, S.
, Shi
, F. H.
, Wang
, Y. C.
, Chen
, H. B.
, Wang
, H.
, and Hu
, Y. Z.
, 2007
, “Simulations and Measurements of Sliding Friction Between Rough Surfaces in Point Contacts: From EHL to Boundary Lubrication
,” ASME J. Tribol.
, 129
(3
), pp. 495
–501
.29.
Liu
, X. L.
, Jiang
, M.
, Yang
, P. R.
, and Kaneta
, M.
, 2005
, “Non-Newtonian Thermal Analyses of Point EHL Contacts Using the Eyring Model
,” ASME J. Tribol.
, 127
(1
), pp. 70
–81
.30.
Ehret
, P.
, Dowson
, D.
, and Taylor
, C. M.
, 1999
, “Thermal Effects in Elliptical Contacts With Spin Conditions
,” 25th Leeds-Lyon Conference on Tribology
, Leeds, UK, Sept. 14–17, pp. 685
–703
.31.
Carslaw, H. S., and Jaeger, J. C., 1959,
Conduction of Heat in Solids
, Oxford University Press, London.32.
Kim
, H. J.
, Ehret
, P.
, Dowson
, D.
, and Taylor
, C. M.
, 2001
, “Thermal Elastohydrodynamic Analysis of Circular Contacts, Part 2: Non-Newtonian Model
,” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol.
, 215
(4
), pp. 353
–362
.33.
Sui
, P. C.
, and Sadeghi
, F.
, 1991
, “Non-Newtonian Thermal Elastohydrodynamic Lubrication
,” ASME J. Tribol.
, 113
(2
), pp. 390
–397
.34.
Kazama
, T.
, Ehret
, P.
, and Taylor
, C. M.
, 2001
, “On the Effects of the Temperature Profile Approximation in the Thermal Newtonian Solutions of Elastohydrodynamic Line Contacts
,” Proc. Inst. Mech. Eng., Part J: J. Eng. Tribol.
, 215
(1
), pp. 109
–220
.35.
Zaretsky
, E. V.
, Poplawski
, J. V.
, and Peters
, S. M.
, 1996
, “Comparison of Life Theories for Rolling-Element Bearings
,” Tribol. Trans.
, 39
(2
), pp. 237
–248
.36.
Epstein
, D.
, Yu
, T. H.
, Wang
, Q.
, Keer
, L. M.
, Cheng
, H. S.
, Liu
, S. B.
, Harris
, S.
, and Gangopadhyay
, A.
, 2003
, “An Efficient Method of Analyzing the Effect of Roughness on Fatigue Life in Mixed-EHL Contact
,” Tribol. Trans.
, 46
(2
), pp. 273
–281
.37.
Martini
, A.
, Escoffier
, B.
, Wang
, Q.
, Liu
, S. B.
, Keer
, L. M.
, Zhu
, D.
, and Bujold
, M.
, 2006
, “Prediction of Subsurface Stress in Elastic Perfectly Plastic Rough Components
,” Tribol. Lett.
, 23
(3
), pp. 243
–251
.38.
Bos
, J.
, 1995
, “Frictional Heating of Tribological Contacts
,” Ph.D. thesis, Twente University, Enschede, The Netherlands.39.
Liu
, S. B.
, and Wang
, Q.
, 2002
, “Studying Contact Stress Fields Caused by Surface Tractions With a Discrete Convolution and Fast Fourier Transform Algorithm
,” ASME J. Tribol.
, 124
(1
), pp. 36
–45
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