Misalignment Effect on the Static and Dynamic Characteristics of Hydrodynamic Journal Bearings

Author:

Qiu Z. L1,Tieu A. K.1

Affiliation:

1. Department of Mechanical Engineering, The University of Wollongong, NSW 2500, Wollongong, Australia

Abstract

This paper solves the Reynolds equation by the finite difference method in a fixed coordinate system with the static load acted in the vertical direction. All static and dynamic characteristics (including load capacity, attitude angle, side flow, friction force, misaligned moments, and eight linear force coefficients) of a horizontally grooved bearing under different eccentricity and misalignment conditions are presented and compared with available experimental data. The effects of misalignment on all these bearing characteristics and on the stability of the rotor-bearing system are analyzed.

Publisher

ASME International

Subject

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

Reference19 articles.

1. Asanabe, S., Akahoshi, M., and Asai, R., 1972, “Theoretical and Experimental Investigation on Misaligned Journal Bearing Performance,” Tribology Convention, The Inst. of Mech. Eng., London, paper C36/71.

2. Bannister, R. H., 1976, “A Theoretical and Experimental Investigation Illustrating the Influence of Non-linearity and Misalignment on the Eight Oil Film Force Coefficients,” Conf. Vibrations in Rotating Machinery, Inst. Mech. Eng., pp. 271–278.

3. Bou-said B. , and NicolasD., 1992, “Effect of Misalignment on Static and Dynamic Characteristics of Hybrid Bearings,” Tribology Transactions, Vol. 35.2, pp. 325–331.

4. Buckholz R. H. , and LinJ. F., 1986, “The Effect of Journal Bearing Misalignment on Load and Cavitation for Non-Newtonian Lubricants,” ASME JOURNAL OF TRIBOLOGY, Vol. 108, pp. 645–654.

5. Choy F. K. , BraunM. J., and HuY., 1992a, “Nonlinear Transient and Frequency Response Analysis of a Hydrodynamic Journal Bearing,” ASME JOURNAL OF TRIBOLOGY, Vol. 114, pp. 448–454.

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