A mixed-TEHD (thermal elastohydrodynamic) model was developed for journal bearings working at large eccentricity ratios in order to facilitate a better understanding of mixed-lubrication phenomena for conformal-contact elements. The model consists of a mixed-lubrication process that considers the roughness effect and asperity contact, a thermal process for temperature analyses, and a thermal-elastic process for deformation calculations. In this model, the interactive journal, lubricant, and bearing were treated as an integrated system. Finite-element, finite-difference, and influence-function methods were utilized in the numerical process. The overall solution was achieved by the iteration method. Analyses of a simulated bearing-lubricant-journal system working under mixed-lubrication conditions were conducted, and the influence of the changes of lubricant flows as a result of the asperity contact on the system heat transfer and temperature distributions was numerically investigated.

1.
Dyson
A.
,
1976
, “
A Failure of EHD Lubrication of Circumferentially Ground Disk
,”
Proceedings of IME
, Vol.
190
, pp.
52
76
.
2.
Ferron
J.
,
Freˆne
J.
, and
Boncompain
R.
,
1983
, “
A Study of the Thermalhydrodynamic Performance of a Plain Journal Bearing Comparison Between Theory and Experiments
,”
ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol.
105
, pp.
422
428
.
3.
Fillon
M.
,
Bligoud
J.
, and
Freˆne
J.
,
1992
, “
Experimental Study of Tilting-Pad Journal Bearings-Comparison With Theoretical Thermoelastohydrodynamic Results
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
114
, pp.
579
587
.
4.
Khonsari, M. M., Jang, J. Y., and Fillon, M., 1995, “On the Generalization of Thermohydrodynamic Analyses for Journal Bearings,” ASME JOURNAL OF TRIBOLOGY, pp. 1–9.
5.
Knight
J. D.
, and
Niewiarowski
A. J.
,
1990
, “
Effect of Two Film Rupture Models on the Thermal Analysis of a Journal Bearing
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
112
, pp.
183
188
.
6.
Hamrock
B. J.
, and
Dowson
D.
,
1976
, “
Isothermal Elastohydrodynamic Lubrication of Point Contact
,”
ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol.
98
, pp.
223
229
.
7.
Lee
S. C.
, and
Ren
N.
,
1996
, “
Behavior of Elastic-Plastic Rough Surface Contacts as Affected by the Surface Topography, Load and Materials
,”
STLE Tribology Transactions
, Vol.
39
, pp.
67
74
.
8.
Paranjpe
R. S.
, and
Han
T.
,
1995
, “
A Transient Thermohydrodynamic Analysis Including Mass Conserving Cavitation for Dynamically Loaded Journal Bearings
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
117
, pp.
369
377
.
9.
Patir
N.
, and
Cheng
H. S.
,
1978
, “
An Average Flow Model for Determine Effects of Three Dimensional Roughness on Partial Hydrodynamic Lubrication
,”
ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol.
100
, pp.
12
17
.
10.
Pinkus, O., 1990, Thermal Aspects of Fluid Film Tribology, ASME Press.
11.
Shi, F., 1996, “A Mixed-Thermal Elastohydrodynamic Lubrication Modeling and Analysis for Journal-Bearing Conformal Contacts,” Master’s thesis, Florida International University, Miami, FL, 33199.
12.
Shi, F., and Wang, Q., 1997, “A Method of Thermal-Influence Functions for Tribological Applications,” Submitted to STLE.
13.
Tucker
P. G.
, and
Keogh
P. S.
,
1994
, “
A Generalized Computational Fluid Dynamics Approach for Journal Bearing Performance Prediction
,”
Institution of Mechanical Engineers, Proceedings
, Part 3, Vol.
209
, pp.
99
108
.
14.
Wang
Q.
,
Shi
F.
, and
Lee
S.
,
1997
, “
Study of Mixed-Lubrication of Journal Bearing Conformal Contacts
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
119
, July, p.
456
456
.
15.
Wang, Q., Shi, F., and Lee, S., 1998, “A Mixed-TEHD Study for Journal Bearing Conformal Contacts, Part II: Contact, Film Thickness and Performance Analyses,” ASME JOURNAL OF TRIBOLOGY, published in this issue pp. 206–213.
16.
Wu
C.
, and
Zheng
L.
,
1989
, “
An Average Reynolds Equation for Partial Film Lubrication with a Contact Factor
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
111
, pp.
188
191
.
17.
Woodward, W., and Paul, B., 1976, “Contact Stress for Closely Conforming Bodies—Application to Cylinders and spheres,” DOT-TST-77-48.
18.
Zienkiewicz, O. C., and Taylor, R. L., 1989, The Finite Element Method, McGraw-Hill.
This content is only available via PDF.
You do not currently have access to this content.