A relation between journal vibration and asymmetric temperature in the lubricant-journal interface is derived. The bearing consists of five equally distributed tilting-pads. An arbitrary synchronous harmonic journal vibration is allowed. Heat conduction in the rotor shaft for nonstationary bearing temperature is solved. The result is presented as a frequency response of the shaft bow. Influence of air-convection and different bearing widths is investigated.

Issue Section:
Research Papers
Topics:
Bearings, Convection, Frequency response, Heat conduction, Heating, Lubricants, Rotors, Temperature, Vibration
1.
Dimarogonas, A. D., 1970, “An Analytic Study of the Packing Rub Effect in Rotating Machinary,” Dissertation, Rensselaer Polytechnic Institute, Troy, N. Y.
2.
Dimarogonas, A. D., 1983, Analytical Methods in Rotor Dynamics, Applied Science Publishers Ltd., England.
3.
Ericsson, U., 1980, “Temperature Distribution in the Oil Film of a Vibrating Tilting-Pad Bearing,” Dissertation, Chalmers University of Technology, Gothenburg.
4.
Gadangi
R. K.
,
Palazzolo
A. B.
, and
Kim
J.
,
1996
, “
Transient Analysis of Plain and Tilt Pad Journal Bearings Including Fluid Film Temperature Effects
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
118
, pp.
423
–
430
.
5.
Hesseborn, B., 1978, “Measurements of Temperature Unsymmetries in Bearing Journal Due to Vibration,” Internal report ABB Stal.
6.
Keogh
P. S.
, and
Morton
P. G.
,
1993
, “
Journal Bearing Differential Heating Evaluation with Influence on Rotor Dynamic Behaviour
,”
Proceedings of the Royal Socity of London, Series A
, Vol.
441
, pp.
527
–
548
.
7.
Keogh
P. S.
, and
Morton
P. G.
,
1994
, “
The Dynamic Nature of Rotor Thermal Bending Due to Unsteady Lubricant Shearing Within a Bearing
,”
Proceedings of the Royal Society of London, Series A
, Vol.
445
, pp.
273
–
290
.
8.
Larsson
B.
,
1999
, “
Journal Asymmetric Heating. Part II; Alteration of Rotor Dynamic Properties
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
121
, published in this issue, pp.
164
–
168
.
9.
Monmousseau, P., Fillon, M., and Frene, J., 1997, “Transient Thermoelastohy-drodynamic Study of Tilting-pad Journal Bearings under Dynamic Loading,” ASME Turbo Expo—Land, Sea and Air, IGTI, 97-GT-400, Orlando, June 2–5.
10.
Newkirk
B. L.
,
1926
, “
Shaft Rubbing
,”
Mechanical Engineering
, Vol.
48
, No.
8
, pp.
830
–
832
.
11.
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
–
378
.
12.
Tucker
P. G.
, and
Keogh
P. S.
,
1996
, “
On the Dynamic Thermal State in a Hydrodynamic Bearing with a Whirling Journal Using CFD Techniques
,”
ASME JOURNAL OF TRIBOLOGY
, Vol.
118
, pp.
356
–
363
.
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