A new method to study oil film oscillation and to determine the unstable rotational speed and rotordynamic coefficients of bearings is presented. Differences between the new method called the Oscillating Fluid Mechanics Method (OFMM) and the previous method (quasi-steady state method) are discussed. Insufficiencies of the previous method are analyzed. The theory and calculational procedure of OFMM are given. Calculated results show that this new method provides significantly improved predictions.

1.
Barwell, F. T., 1979, Bearing System Principles and Practice, Oxford University Press.
2.
Dongfang Turbine Factory, 1988, “The Calculation of Journal Bearing in Large Steam Turbine,” Sichuan Province, P.R. China, pp. 44–59.
3.
Kocur, J. A., and Allaire, P. E., 1985, “Finite Element Analysis of Turbulent Lubricate Hydrostatic Journal Bearing for Static and Dynamic Conditions,” ASLE No. 85-AM-2E-3.
4.
Tsuneo Sorneya, ed., 1989, Journal-Bearing Databook, Springer-Verlag Berlin, pp. 216–219.
5.
Walowit, J. A., and Anno, J. N., 1975, Modern Developments In Lubrication Mechanics, Applied Science Pub. London.
6.
Zhang Zhengsong, and Zheng Peiyi, 1985, “Experimental Determination of the Stiffness and Damping Coefficients of Fluid Film Bearings by Means of Step Force,” Tribology International, Apr., Vol. 18, No. 2.
7.
Chen Zuoyi, 1989, Oscillating Fluid Mechanics, Hydroelectric Press, Beijing.
8.
Zuoyi
Chen
, and
Hong
Shu
,
1990
, “
A Parametric Polynomial Method for Solving Complex Flow
,”
Chinese Journal of Engineering Thermophysics
, Vol.
2
, No.
3
, pp.
44
46
.
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