A model is presented, which enables one to predict the running-in performance of the rolling/sliding surfaces subjected to mixed-lubrication line contact. The load-sharing concept was used, in which it is assumed that both the fluid film and the asperities contribute in carrying the imposed load. The plastic deformation of asperities during the running-in is taken into consideration. In the application of the load-sharing method, it is often assumed that asperity heights have a Gaussian distribution. This assumption has been relaxed in this model. Prediction results for the variation in the arithmetic average of asperity heights (Ra) during the running-in period for contact of two rollers are compared with published experimental data. Also presented are the results for the variation in wear volume, wear rate, and friction coefficient during the running-in period. The effect of surface pattern, speed, and load on the running-in behavior is studied. The steady-state wear rate for different surface patterns calculated from this model is compared with the wear rate predicted by the thermal desorption model, and the results are in agreement both in trend and magnitude. The effect of running-in on the Stribeck curve for different surface pattern is discussed.

1.
Gohar
,
R.
, 2001,
Elastohydrodynamics
,
Imperial College Press
,
London, UK
.
2.
Holm
,
R.
, 1946,
Electric Contacts
,
Hugo Gebers Forlag
,
Stockholm, Sweden
.
3.
Burwell
,
J. T.
, and
Strang
,
C. D.
, 1953, “
On the Empirical Law of Adhesive Wear
,”
J. Appl. Phys.
0021-8979,
24
, pp.
18
28
.
4.
Archard
,
J. F.
, 1952, “
Contact and Rubbing of Flat Surfaces
,”
J. Appl. Phys.
0021-8979,
23
, pp.
981
988
.
5.
Andersson
,
S.
, and
Eriksson
,
B.
, 1990,”
Prediction of the Sliding Wear of Spur Gears
,”
Proceedings of the Fourth Nordic Symposium on Tribology (NORDTRIB ‘90)
, Hirtshals, Denmark, pp.
10
13
.
6.
Wu
,
S.
, and
Cheng
,
H. S.
, 1993, “
Sliding Wear Calculation in Spur Gears
,”
ASME J. Tribol.
0742-4787,
115
, pp.
493
500
.
7.
Flodin
,
A.
, and
Andersson
,
A.
, 1997, “
Simulation of Mild Wear in Spur Gears
,”
Wear
0043-1648,
207
, pp.
16
23
.
8.
Flodin
,
A.
, and
Andersson
,
S.
, 1999, “
Wear Simulation of Spur Gears
,”
Tribo Test
1354-4063,
5
(
3
), pp.
225
249
.
9.
Flodin
,
A.
, and
Andersson
,
S.
, 2001, “
A Simplified Model for Wear Prediction in Helical Gears
,”
Wear
0043-1648,
249
, pp.
285
292
.
10.
Bajpai
,
P.
,
Kahraman
,
A.
, and
Anderson
,
N. E.
, 2004, “
A Surface Wear Prediction Methodology for Parallel Axis Gear Pairs
,”
ASME J. Tribol.
0742-4787,
126
, pp.
597
604
.
11.
Stolarski
,
T. A.
, 1996, “
A System for Wear Prediction in Lubricated Sliding Contacts
,”
Lubr. Sci.
0954-0075,
8
, pp.
315
351
.
12.
Rowe
,
C. N.
, 1966, “
Some Aspects of the Heat of Adsorption in the Function of a Boundary Lubricant
,”
ASLE Trans.
0569-8197,
9
, pp.
100
111
.
13.
Kingsbury
,
E. P.
, 1958, “
Some Aspects of the Thermal Desorption of a Boundary Lubricant
,”
J. Appl. Phys.
0021-8979,
29
, pp.
888
891
.
14.
Wu
,
S.
, and
Cheng
,
H. S.
, 1991, “
A Sliding Wear Model for Partial-EHL Contacts
,”
ASME J. Tribol.
0742-4787,
113
, pp.
134
141
.
15.
Akbarzadeh
,
S.
, and
Khonsari
,
M. M.
, 2009, “
Prediction of Sliding Wear in Spur Gears Using Load Sharing Concept
,”
ASME J. Tribol.
0742-4787,
131
(
024503
), pp.
1
5
.
16.
Lin
,
J. Y.
, and
Cheng
,
H. S.
, 1989, “
An Analytical Model for Dynamic Wear
,”
ASME J. Tribol.
0742-4787,
111
, pp.
468
474
.
17.
Stout
,
K. J.
,
King
,
T. G.
, and
Whitehouse
,
D. J.
, 1977, “
Analytical Techniques in Surface Topography and Their Application to a Running-In Experiment
,”
Wear
0043-1648,
43
, pp.
99
115
.
18.
Sugimura
,
J.
,
Kimura
,
Y.
, and
Amino
,
K.
, 1986, “
Analysis of Topographical Changes Due to Wear-Geometry of the Running-In Process
,”
ASME J. Sol. Energy Eng.
0199-6231,
31
, pp.
813
820
.
19.
Hu
,
Y. Z.
,
Li
,
N.
, and
Tonder
,
K.
, 1991, “
A Dynamic System Model for Lubricated Sliding Wear and Running-In
,”
ASME J. Tribol.
0742-4787,
113
, pp.
499
505
.
20.
Blau
,
P. J.
, 1987, “
A Model for Run-In and Other Transitions in Sliding Friction
,”
ASME J. Tribol.
0742-4787,
109
, pp.
537
544
.
21.
Kumar
,
R.
,
Prakash
,
B.
, and
Sethuramiah
,
A.
, 2002, “
A Systematic Methodology to Characterize the Running-In and Steady State Wear Processes
,”
Wear
0043-1648,
252
, pp.
445
453
.
22.
Wang
,
W.
, and
Wong
,
P. L.
, 2000, “
Wear Volume Determination During Running-In for PEHL Contacts
,”
Tribol. Int.
0301-679X,
33
, pp.
501
506
.
23.
Wang
,
W.
,
Wong
,
P. L.
, and
Zhang
,
Z.
, 2000, “
Experimental Study of the Real Time Change in Surface Roughness During Running-In for PEHL Contacts
,”
Wear
0043-1648,
244
, pp.
140
146
.
24.
Wang
,
W.
,
Wong
,
P. L.
, and
Guo
,
F.
, 2004, “
Application of Partial Elastohydrodynamic Lubrication Analysis in Dynamic Wear Study for Running-In
,”
Wear
0043-1648,
257
, pp.
823
832
.
25.
Zhao
,
Y.
,
Maietta
,
D. M.
, and
Chang
,
L.
, 2000, “
An Asperity Microcontact Model Incorporating the Transition From Elastic Deformation to Fully Plastic Flow
,”
ASME J. Tribol.
0742-4787,
122
, pp.
86
93
.
26.
Greenwood
,
J. A.
, and
Williamson
,
J. B. P.
, 1966, “
Contact of Nominally Flat Surfaces
,”
Proc. R. Soc. London, Ser. A
0950-1207,
295
, pp.
300
319
.
27.
Johnson
,
K. L.
, 1987,
Contact Mechanics
,
Imperial College Press
,
London, UK
.
28.
Faron
,
I. C.
, 2005, “
Mixed Lubricated Line Contact
,” Ph.D. thesis, University of Twente, Enschede, The Netherlands.
29.
Moes
,
H.
, 1992, “
Optimum Similarity Analysis With Applications to Elastohydrodynamic Lubrication
,”
Wear
0043-1648,
159
, pp.
57
66
.
30.
Gelinck
,
E. R. M.
, and
Schipper
,
D. J.
, 2000, “
Calculation of Stribeck Curves for Line Contacts
,”
Tribol. Int.
0301-679X,
33
, pp.
175
181
.
31.
Johnson
,
K. L.
,
Greenwood
,
J. A.
, and
Poon
,
S. Y.
, 1972, “
A Simple Theory of Asperity Contact in Elastohydrodynamic Lubrication
,”
Wear
0043-1648,
19
, pp.
91
108
.
32.
Lu
,
X.
,
Khonsari
,
M. M.
, and
Gelinck
,
E. R. M.
, 2006, “
The Stribeck Curve: Experimental Results and Theoretical Prediction
,”
ASME J. Tribol.
0742-4787,
128
, pp.
789
794
.
33.
Akbarzadeh
,
S.
, and
Khonsari
,
M. M.
, 2008, “
Performance of Spur Gears Considering Surface Roughness and Shear Thinning Lubricant
,”
ASME J. Tribol.
0742-4787,
130
(
021503
), pp.
1
8
.
34.
Akbarzadeh
,
S.
, and
Khonsari
,
M. M.
, 2008, “
Thermal Elastohydrodynamic Analysis of Spur Gears With Consideration of Surface Roughness
,”
Tribol. Lett.
1023-8883,
32
, pp.
129
141
.
35.
Akbarzadeh
,
S.
, and
Khonsari
,
M. M.
, 2010, “
Effect of Surface Pattern on Stribeck Curve
,”
Tribol. Lett.
1023-8883,
37
, pp.
477
486
.
36.
Hsu
,
C. H.
, and
Lee
,
R. T.
, 1994, “
An Efficient Algorithm for Thermal Elastohydrodynamic Lubrication Under Rolling/Sliding Line Contacts
,”
ASME J. Tribol.
0742-4787,
116
, pp.
762
769
.
37.
Patir
,
N.
, 1978, “
A Numerical Procedure for Random Generation of Rough Surfaces
,”
Wear
0043-1648,
47
, pp.
263
277
.
38.
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.
0022-2305,
100
, pp.
8
14
.
39.
Harris
,
T. A.
, 2001,
Rolling Bearing Analysis
,
Wiley
,
New York
.
40.
McCool
,
J. I.
, 1987, “
Traction Model Development
,” Air Force Wright-Aeronautical Materials Laboratory Report No. AFWAL-TR-87-4079.
41.
Kragelsky
,
I. V.
,
Dobychin
,
M. N.
, and
Kombalov
,
V. S.
, 1982,
Friction and Wear Calculation Methods
,
Pergamon
,
Oxford, UK
.
42.
Hamrock
,
B. J.
, 1994,
Fundamentals of Fluid Film Lubrication
,
McGraw-Hill
,
New York
.
43.
Khonsari
,
M. M.
, and
Booser
,
E. R.
, 2010, “
On the Stribeck Curve
,”
Recent Developments in Wear Prevention, Friction and Lubrication
,
G. K.
Nikas
, ed.,
Research Signpost
,
Kerala, India
, pp.
263
278
.
44.
Elewll
,
R. C.
, and
Booser
,
E. R.
, 1972,
Low-Speed Limit of Lubrication
,
Machine Design
0024-9114,
15
, pp.
129
133
.
45.
Khonsari
,
M. M.
, and
Booser
,
E. R.
, 2008,
Applied Tribology- Bearing Design and Lubrication
,
2nd ed.
,
Wiley
,
West Sussex, UK
.
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