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TECHNICAL PAPERS

Directionally Controllable Squeeze Film Damper Using Electro-Rheological Fluid

[+] Author and Article Information
Young Kong Ahn, Bo-Suk Yang

School of Mechanical Engineering, Pukyong National University, San 100, Yongdang-dong, Nam-gu, Pusan 608-739, Korea

Shin Morishita

Department of Mechanical Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan e-mail: shin@ynu.ac.jp

J. Vib. Acoust 124(1), 105-109 (Jul 01, 2001) (5 pages) doi:10.1115/1.1420702 History: Received February 01, 2001; Revised July 01, 2001
Copyright © 2002 by ASME
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References

Thomsen,  K. K., and Andersen,  H., 1974, “Experimental Investigation of a Simple Squeeze Film Damper,” ASME J. Eng. Ind., 96, No. 2, pp. 427–430.
Satio,  S., and Kobayashi,  M., 1982, “On the Vibration of a Rotor Supported by Squeeze Film Damper,” Trans. Jpn. Soc. Mech. Eng., Ser. C, 48, No. 436, pp. 1883–1888.
Nikolajsen,  J. L., and Hoque,  M. S., 1988, “An Electroviscous Damper for Rotor Applications,” ASME J. Vibr. Acoust., 112, No. 3, pp. 440–443.
Morishita,  S., and Mitsui,  J., 1992, “Controllable Squeeze Film Damper (An Application of Electro-Rheological Fluid),” ASME J. Vibr. Acoust., 114, No. 3, pp. 354–357.
Tichy,  J. A., 1993, “Behavior of a Squeeze Film Damper with an Electrorheological Fluid,” Tribol. Trans., 36, No. 1, pp. 127–133.
Winslow, W. M., 1947, “Method and Means for Translating Electrical Impulses into Mechanical Forces,” US Patent Specification 2417850.
Carlson, J. D., and Spencer, B. F., Jr., 1996, “Magneto-Rheological Fluid Dampers for Semi-Active Seismic Control,” Proceedings of the 3rd International Conference on Motion and Vibration Control, pp. 35–40.
Stanway,  R., Sproston,  J. L., and EL-Wahed,  A. K., 1996, “Applications of Electro-Rheological Fluids in Vibration Control: a Survey,” Smart Mater. Struct., 5, pp. 464–482.
Morishita,  S., and Ura,  T., 1993, “ER Fluid Applications to Vibration Control Devices and an Adaptive Neural-Net Controller,” Journal of Intelligent Material Systems and Structures,4, pp. 366–372.
Hoque, M. S., 1988, “Experimental Investigation of an Electroviscous Damper for Rotordynamics Applications,” Master thesis, Mechanical Engineering Department, Texas A&M University.
Peel,  D. J., Stanway,  R., and Bullough,  W. A., 1996, “Dynamic Modeling of an ER Vibration Damper for Vehicle Suspension Applications,” Smart Mater. Struct., 5, pp. 591–606.
Dyke,  S. J., Spencer,  B. F., Sain,  M. K., and Carlson,  J. D., 1996, “Modeling and Control of Magnetorheological Dampers for Seismic Response Reduction,” Smart Mater. Struct., 5, pp. 565–575.

Figures

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Mechanism of effective ER
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Experimental apparatus of the flexible rotor with squeeze film damper
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Construction of directionally controllable SFD
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Response to impact test with variation of applied electric fields
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Time histories with variation of damping coefficient by simulation
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Spectrum of impact response under various electric fields
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Variation of resonance frequency and damping ratio
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Variation of resonance frequency and damping ratio by simulation
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Mode shapes of flexible rotor
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Whirl orbits under various electric fields
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Whirl orbits under various support damping coefficients by simulation
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Vertical and horizontal amplitudes under various support damping coefficients by simulation

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