Abstract

One of the methods to avoid rolling contact fatigue is to reduce the film pressure due to surface roughness and the magnitude of its fluctuation. The roughness on rolling/sliding concentrated contacting surfaces has generally different asperity heights. In this study, it has been clarified, using a fully flooded non-Newtonian thermal elastohydrodynamic lubrication analysis in contact between materials with different thermal conductivities and roughness asperity heights, which surface velocity should be increased and which roughness asperity height should be lowered to reduce the magnitudes of film pressure and its fluctuation. The results obtained will make a new contribution to the combination of roughness heights on the EHL contact surfaces.

References

1.
Dowson
,
D.
, and
Higginson
,
G. R.
,
1966
,
Elastohydrodynamic Lubrication
,
Pergamon
,
Oxford
.
2.
Hamrock
,
B. J.
, and
Dowson
,
D.
,
1981
,
Ball Bearing Lubrication
,
John Wiley & Sons
,
New York
.
3.
Dowson
,
D.
, and
Ehret
,
P.
,
1999
, “
Past, Present and Future Studies in Elastohydrodynamics
,”
Proc. Inst. Mech. Eng., Part J
,
213
(
5
), pp.
317
333
.
4.
Gohar
,
R.
,
2001
,
Elastohydrodynamics
,
Imperial College
,
London
.
5.
Spikes
,
H. A.
,
2006
, “
Sixty Years of EHL
,”
Lubr. Sci.
,
18
(
4
), pp.
265
391
.
6.
Kumar
,
P.
,
Anuradha
,
P.
, and
Khonsari
,
M. M.
,
2010
, “
Some Important Aspects of Thermal Elastohydrodynamic Lubrication
,”
Proc. Inst. Mech. Eng., Part C
,
224
(
12
), pp.
2588
2598
.
7.
Lugt
,
P. M.
, and
Morales-Espejel
,
G. E.
,
2011
, “
A Review of Elasto-hydrodynamic Lubrication Theory
,”
STLE Tribol. Trans.
,
54
(
3
), pp.
470
496
.
8.
Zhu
,
D.
, and
Wang
,
Q. J.
,
2011
, “
Elastohydrodynamic Lubrication: A Gateway to Interfacial Mechanics—Review and Prospect
,”
ASME J. Tribol.
,
133
(
4
), p.
041001
.
9.
Spikes
,
H. A.
, and
Zhang
,
J.
,
2014
, “
History, Origins and Prediction of Elastohydrodynamic Friction
,”
Tribol. Lett.
,
56
(
1
), pp.
1
25
.
10.
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
.
11.
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
.
12.
Kaneta
,
M.
,
Yang
,
P.
,
Krupka
,
I.
, and
Hartl
,
M.
,
2015
, “
Fundamentals of Thermal Elastohydrodynamic Lubrication in Si3N4 and Steel Circular Contacts,” Proc. IMechE., Part J
,”
J. Eng. Tribol.
,
229
(
8
), pp.
929
939
.
13.
Kaneta
,
M.
,
Sperka
,
P.
,
Yang
,
P.
,
Krupka
,
I.
,
Yang
,
P.
, and
Hartl
,
M.
,
2018
, “
Thermal Elastohydrodynamic Lubrication of Ceramic Materials
,”
STLE Trans.
,
61
(
5
), pp.
869
879
.
14.
Cameron
,
A.
,
1958
, “
The Viscosity Wedge
,”
ASLE Trans.
,
1
(
2
), pp.
248
253
.
15.
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
.
16.
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
.
17.
Habchi
,
W.
,
2014
, “
A Numerical Model for the Solution of Thermal Elastohydrodynamic Lubrication in Coated Circular Contacts
,”
Tribol. Int.
,
73
, pp.
57
68
.
18.
Ai
,
X.
,
1998
, “
Effect of Three-Dimensional Random Surface Roughness on Fatigue Life of a Lubricated Contact
,”
ASME J. Tribol.
,
120
(
2
), pp.
159
164
.
19.
Olver
,
A. V.
,
2005
, “
The Mechanism of Rolling Contact Fatigue: An Update
,”
Proc. Inst. Mech. Eng., Part J
,
219
(
5
), pp.
213
330
.
20.
Qiao
,
H.
,
Evans
,
H. P.
, and
Snidle
,
R. W.
,
2008
, “
Comparison of Fatigue Model Results for Rough Surface Elastohydrodynamic Lubrication
,”
Proc. Inst. Mech. Eng., Part J
,
222
(
3
), pp.
381
393
.
21.
Brandão
,
J. A.
,
Seabra
,
J. H. O.
, and
Castro
,
A.
,
2010
, “
Surface Initiated Tooth Flank Damage Part I: Numerical Model
,”
Wear
,
268
(
1–2
), pp.
1
12
.
22.
Morales-Espejel
,
G. E.
,
2014
, “
Surface Roughness Effects in Elastohydrodynamic Lubrication: A Review With Contributions
,”
Proc. Inst. Mech. Eng., Part J
,
228
(
11
), pp.
1217
1242
.
23.
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
.
24.
Kaneta
,
M.
,
Matsuda
,
K.
, and
Nishikawa
,
H.
,
2022
, “
The Causes of Asymmetric Deformation of Surface Roughness Asperities in Elastohydrodynamic Lubrication Contacts
,”
ASME J. Tribol.
,
144
(
6
), p.
061601
.
25.
Larsson
,
R.
,
Larsson
,
P. O.
,
Eriksson
,
E.
,
Sjöberg
,
M.
, and
Höglund
,
E.
,
2000
, “
Lubricant Properties for Input to Hydrodynamic and Elastohydrodynamic Lubrication Analyses
,”
Proc. IMechE., Part J, J. Eng. Tribol.
,
214
(
1
), pp.
17
27
.
26.
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
.
27.
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
.
28.
Bair
,
S.
,
Vergne
,
P.
,
Kumar
,
P.
,
Poll
,
G.
,
Krupka
,
I.
,
Hartl
,
M.
,
Habchi
,
W.
, and
Larsson
,
R.
,
2015
, “
Comments on “History, Origins and Prediction of Elastohydrodynamic Friction,” by Spikes and Jie
,”
Tribol. Lett.
,
58
(
1
), p.
16
.
29.
Spikes
,
H.
, and
Zhang
,
J.
,
2015
, “
Reply to the Comment by Scott Bair, Philippe Vergne, Punit Kumar, Gerhard Poll, Ivan Krupka, Martin Hartl, Wassim Habchi, Roland Larsson, on “History, Origins and Prediction of Elastohydrodynamic Friction,” by Spikes and Jie in Tribology Letters
,”
Tribol. Lett.
,
58
(
1
), p.
17
.
30.
Yang
,
P.
, and
Wen
,
S.
,
1990
, “
A Generalized Reynolds Equation for Non-Newtonian Thermal Elastohydrodynamic Lubrication
,”
ASME J. Tribol.
,
112
(
4
), pp.
631
636
.
31.
Ohno
,
N.
,
2007
, “
High-Pressure Behavior of Toroidal CVT Fluid for Automobile
,”
Tribol. Int.
,
40
(
2
), pp.
233
238
.
32.
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
.
33.
Venner
,
C. H.
, and
Lubrecht
,
A. A.
,
2000
,
Multilevel Methods in Lubrication
,
Elsevier
,
Amsterdam
.
34.
Kaneta
,
M.
,
Matsuda
,
K.
, and
Nishikawa
,
H.
,
2022
, “
Effects of Thermal Properties of Contact Materials and Slide-Roll Ratio in Elastohydrodynamic Lubrication
,”
ASME J. Tribol.
,
144
(
6
), p.
061603
.
35.
Reddyhoff
,
T.
,
Schmidt
,
A.
, and
Spikes
,
H.
,
2019
, “
Thermal Conductivity and Flash Temperature
,”
Tribol. Lett.
,
67
(
1
), p.
22
.
36.
Habchi
,
W.
, and
Bair
,
S.
,
2020
, “
The Role of the Thermal Conductivity of Steel in Quantitative Elastohydrodynamic Friction
,”
Tribol. Int.
,
142
, p.
105970
.
37.
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
, p.
106059
.
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