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TECHNICAL PAPERS

Optimal Clearance Configuration of Fluid-Film Journal Bearings for Stability Improvement

[+] Author and Article Information
Koichi Matsuda, Yoichi Kanemitsu, Shinya Kijimoto

Department of Intelligent Machinery and Systems, Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan

J. Tribol 126(1), 125-131 (Jan 13, 2004) (7 pages) doi:10.1115/1.1631018 History: Received March 06, 2002; Revised May 06, 2003; Online January 13, 2004
Copyright © 2004 by ASME
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References

Oyama, A., Obayashi, S., Nakahashi, K., and Nakamura, T., 1998, “Aerodynamic Shape Optimization of a Three-Dimensional Wing by Genetic Algorithm,” Journal of the Japan Society for Aeronautical and Space Sciences, 46 , pp. 682–686 (in Japanese).
Rodrigues, H., Guedes, J. M., Soto, C. A., and Taylor, J. E., 1999, “An Iterative Model to Design Optimal Two-Material Composite Structures,” Applied Mechanics in the Americas, 6 , pp. 251–254.
Hashimoto, H., and Imai, T., 1995, “Tribo-Optimum-Design of High Speed Hydrodynamic Bearing Considering the Turbulent Flow in Lubricating Films,” Proceedings of the Japan Society for Mechanical Engineers Dynamics and Design conference, A , pp. 220–223 (in Japanese).
Byrne, J., P. Allaire, and S. Carson-Skalak, 1997, “Optimization of Fixed Pad Bearings for Load Capacity, Power Loss, and Rigid Rotor Stability,” Department of Mechanical, Aerospace, and Nuclear Engineering, University of Virginia, Charlottesville, VA, USA, preprint.
Hikida, R., 1998, “Optimization of Pressure-Dam Bearings for Dynamic Characteristics,” B.E. thesis, Department of Intelligent Machinery and Systems, Kyushu University, Fukuoka, Japan (in Japanese).
Rayleigh,  Lord, 1918, “Notes on the Theory of Lubrication,” Philos. Mag., 35, pp. 1–12.
Maday,  C. J., 1970, “The Maximum Principle Approach to the Optimum One-Dimensional Journal Bearing,” ASME J. Lubr. Technol., 92, pp. 482–489.
Rodhe,  S. M., and McAllister,  G. T., 1976, “On the Optimization of Fluid Film Bearings,” Proc. R. Soc. London, Ser. A, A351, pp. 481–497.
Robert,  M. P., 1990, “Optimization of Self-Acting Gas Bearings for Maximum Static Stiffness,” ASME J. Appl. Mech., 57, pp. 758–761.
Robert,  M. P., 1995, “New Class of Sliders Numerically Designed for Maximum Stiffness,” ASME J. Tribol., 117, pp. 456–460.
Childs, D., 1993, Turbomachinery Rotordynamics: Phenomena, Modeling, and Analysis, John Willey & Sons, New York.
Getz,  W. M., 1988, “On Minimax Eigenvalue Problems via Constrained Optimization,” J. Optim. Theory Appl., 57, pp. 59–68.
Cloutier,  J. R., and Wilson,  R. F., 1991, “Periodically Preconditioned Conjugate Gradient-Restoration Algorithm,” J. Optim. Theory Appl., 70, pp. 79–95.
Magrab, E. B., Azarm, S., Balachandran, B., and Duncan, J., 2000, An Engineer’s Guide to Matlab, Prentice Hall, New Jersey.
Someya, T., 1988, Journal-Bearing Databook, Springer-Verlag, Berlin, Germany.

Figures

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Configuration of a fluid-film journal bearing
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Variation of the cost for order of the Fourier series (α=0.1)
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Optimal clearance configuration of the designed bearings: (a) α=0.1, and (b) α=0.15.
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Typical circumferential pressure distribution for the optimal and circular bearings (ε=0.5,α=0.1, and L/D=0.1)
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Variation of the attitude angles for eccentricity ratios (α=0.1)
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Stiffness coefficients for the optimal and circular bearings (α=0.1 and L/D=0.1)
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Damping coefficients for the optimal and circular bearings (α=0.1 and L/D=0.1)
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Vertical rigid rotor radially supported by fluid-film journal bearings
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Onset speed of instability ps2 for the optimal and circular bearings: (a) α=0.1, and (b) α=0.15.
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Whirl-frequency ratio Ωs for the optimal and circular bearings (α=0.1)
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Effect of truncating Fourier coefficients on the onset speed of instability (α=0.1)

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