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TECHNICAL PAPERS

Calculation of Equilibrium Position and Dynamic Coefficients of a Journal Bearing Using Free Boundary Theory

[+] Author and Article Information
Tiesheng Zheng

Department of Mechanics and Engineering Science, Fudan University, Shanghai 200433, P. R. of China

Norio Hasebe

Department of Civil Engineering, Nagoya Institute of Technology, Gokiso-Cho, Showa-Ku, Nagoya 466, Japan

J. Tribol 122(3), 616-621 (Oct 05, 1999) (6 pages) doi:10.1115/1.555410 History: Received March 31, 1999; Revised October 05, 1999
Copyright © 2000 by ASME
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References

Parkins,  D. W., 1979, “Theoretical and Experimental Determination of the Dynamic Characteristics of a Hydrodynamic Journal Bearing,” ASME J. Lubr. Technol., 101, pp. 129–139.
Someya, T., 1989, Journal-Bearing Databook, Springer-Verlag, Berlin.
Lund, J. W., and Thomson, K. K., 1978, “A Calculation Method and Data for the Dynamic Coefficients of Oil-lubricated Journal Bearings,” Topics in Fluid Journal Bearing and Rotor Bearing System, ASME, New York, pp. 1–28.
Klit,  P., and Lund,  J. W., 1986, “Calculation of the Dynamic Coefficients of a Journal Bearing, Using a Variational Approach,” ASME J. Tribol., 108, pp. 421–425.
Rohde,  S. M., and Mallister,  G. T., 1975, “A Variational Formulation for a Class of Free Boundary Problems Arising in Hydrodynamic Lubrication,” Int. J. Eng. Sci., 13, pp. 841–850.
Kinderlenhrer, D., and Stanpacchia, G., 1980, An Introduction to Variational Inequalities and Their Applications, Academic Press, New York.
Milne, R. D., 1980, Applied Functional Analysis An Introductory Treatment, Pitman Publishing, Massachusetts.
Zhou,  S. Z., 1983, “The Error Bounds of Finite Element Method for a Two-Dimensional Singular Boundary Value Problem,” J. Comput. Math.,1, pp. 143–147.

Figures

Grahic Jump Location
Geometry and coordinate system of a journal bearing
Grahic Jump Location
Stiffness coefficients versus Sommerfeld number for two-axial groove bearing with L/D=0.5
Grahic Jump Location
Damping coefficients versus Sommerfeld number for two-axial groove bearing with L/D=0.5
Grahic Jump Location
Equilibrium position versus Sommerfeld number for two-axial groove bearing with L/D=0.5
Grahic Jump Location
Convergence shown from 8 different initial points to equilibrium position for two-axial groove bearing with L/D=0.5, S=0.2
Grahic Jump Location
Film pressure distribution for two-axial groove bearing with L/D=0.5, S=0.2

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