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TECHNICAL PAPERS

Reduced Weight Design of a Flexible Rotor with Ball Bearing Stiffness Characteristics Varying with Rotational Speed and Load

[+] Author and Article Information
Dong-Soo Lee

Engine R&D Center, Engine and Material Division, Daewoo Heavy Industries LTD., Inchon 401-010, South Korea

Dong-Hoon Choi

Dept. of Mechanical Design and Production Engineering, Hanyang University, Seoul 133-791, South Korea

J. Vib. Acoust 122(3), 203-208 (Feb 01, 2000) (6 pages) doi:10.1115/1.1303066 History: Received February 01, 1997; Revised February 01, 2000
Copyright © 2000 by ASME
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References

While,  M. F., 1979, “Rolling Element Bearing Vibration Transfer Characteristic: Effect of Stiffness,” ASME J. Appl. Mech., 46, pp. 677–684.
Gargiulo,  E. P., 1980, “A Simple Way to Estimate Bearing Stiffness,” Mach. Des., 52, pp. 107–110.
Lim,  T. C., and Singh,  R., 1990, “Vibration Transmission Through Rolling Element Bearing, Part I: Bearing Stiffness Formulation,” J. Sound Vib., 139, pp. 179–199.
Rajan,  M., Rajan,  S. D., Nelson,  H. D., and Chen,  W. J., 1987, “Optimal Placement of Critical Speeds in Rotor-Bearing Systems,” ASME J. Vib. Acoust. Stress, Reliab. Des., 109, pp. 152–157.
Shiau,  T. N., and Hwang,  J. L., 1990, “Optimum Weight Design of a Rotor Bearing System with Dynamic Behavior Constraints,” ASME J. Eng. Gas Turbines Power, 112, pp. 454–462.
Chen,  T. Y., and Wang,  B. P., 1993, “Optimal Design of Rotor-Bearing Systems with Eigenvalue Constraints,” ASME J. Eng. Gas Turbines Power, 115, pp. 256–260.
Shiau,  T. N., and Chang,  J. R., 1993, “Multi-objective Optimization of Rotor-Bearing System with Critical Speed Constraints,” ASME J. Eng. Gas Turbines Power, 115, pp. 246–255.
Vanderplaats, G. N., 1984, Numerical Optimization Techniques for Engineering Design: With Applications, McGraw-Hill, New York.
Murphy,  B. T., and Vance,  J. M., 1983, “An Improved Method for Calculating Critical Speeds and Rotordynamic Stability of Turbomachiney,” ASME J. Eng. Power, 105, pp. 591–595.
Jones,  A. B., 1960, “A General Theory for Elastically Constrained Ball and Roller Bearing Under Arbitrary Load and Speed Conditions,” ASME J. Basic Eng., 82, pp. 309–320.
Ioannides,  E., Harris,  T. A., and Ragen,  M., 1990, “Endurance of Aircraft Gas Turbine Mainshaft Ball Bearings-Analysis Using Improved Fatigue Life Theory: Part 1–Application to a Long-Life Bearing,” ASME J. Tribol., 112, pp. 304–308.

Figures

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Loads and displacements of a ball bearing
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A multi-stepped rotor-bearing system
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Stiffness characteristics of the ball bearing (P=1500 N)
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Comparison of the whirl speed analysis results with speed dependent and constant bearing stiffnesses (P=1500 N)
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Whirl speed maps at the initial and optimum design
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Overall procedure of the optimum design program
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Flow chart for ball bearing analysis

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