A Theoretical Analysis of Floating Bush Journal Bearing With Axial Oil Film Rupture Being Considered-Reference-Cited by-同舟云学术

A Theoretical Analysis of Floating Bush Journal Bearing With Axial Oil Film Rupture Being Considered

Published:2002-05-31 Issue:3 Volume:124 Page:494-505
ISSN:0742-4787
Container-title:Journal of Tribology
language:en
Short-container-title:

Author:

Hatakenaka Kiyoshi¹,Tanaka Masato¹,Suzuki Kenji¹

Affiliation:

1. Department of Engineering Synthesis, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8656, Japan

Abstract

A new modified Reynolds equation is derived with centrifugal force acting on the hydrodynamic oil film being considered. This equation, together with a cavitation model, is used to obtain the steady-state equilibrium and calculate the rotordynamic coefficients of lightly loaded floating bush journal bearings operating at very high shaft speeds. The bush-to-shaft speed ratio and the linear cross-coupling spring coefficients of the inner oil film is found to decrease with the increase in shaft speed as the axial oil film rupture develops in the inner oil film. The present model can give reasonable explanation to the steady-state behavior and the stability behavior of the bearing observed in actual machines.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

Link

http://asmedigitalcollection.asme.org/tribology/article-pdf/124/3/494/5821017/494_1.pdf

Reference22 articles.

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2. Kettleborough, C. F. , 1954, “Frictional Experiments on Lightly-Loaded Fully Floating Journal Bearings,” Australian J. Appl. Sci., 5, pp. 211–220.

3. Hill, H. C. , 1958, “Slipper Bearings and Vibration Control in Small Gas Turbines,” Trans. ASME, 80, pp. 1756–1764.

4. Dworski, J. , 1964, “High-Speed Rotor Suspension Formed by Fully Floating Hydrodynamic Radial and Thrust Bearings,” ASME J. Eng. Power, 86, pp. 149–160.

5. Tondl, A., 1965, Some Problems of Rotor Dynamics, Chapman and Hall, London, pp. 200–201.

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