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TECHNICAL PAPERS

Virtual Skyhook Vibration Isolation System

[+] Author and Article Information
Steve Griffin

4411 The 25 Way, Suite 350, Albuquerque, NM 87109

Joel Gussy, Benjamin K. Henderson, Dino Sciulli

Air Force Research Laboratory, 3550 Aberdeen Road, Kirtland AFB, NM 87117

Steven A. Lane

Air Force Research Laboratorye-mail: Steven.Lane@kirtland.af.mil

J. Vib. Acoust 124(1), 63-67 (Jul 01, 2001) (5 pages) doi:10.1115/1.1421353 History: Received April 01, 2000; Revised July 01, 2001
Copyright © 2002 by ASME
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References

Ormondroyd,  J., and Den Hartog,  J. P., 1928, “The Theory of the Dynamic Vibration Absorber,” Trans. ASME, APM-50-7, pp. 9–22.
Gee-Clough,  D., and Waller,  R. A., 1968, “An Improved Self-Damped Pneumatic Isolator,” J. Sound Vib., 8, No. 3, pp. 364–376.
Warring, R. H., 1972, Handbook of Noise and Vibration Control, 2nd edition, Morden, Trade and Technical Press.
Munjal,  M. J., 1975, “A Rational Synthesis of Vibration Isolators,” J. Sound Vib., 39, No. 2, pp. 247–263.
Harris, C. M., and Crede, C. E., 1976, Shock and Vibration Handbook, 2nd edition, McGraw-Hill, New York.
Irwin, J. D., and Graf, E. R., 1979, Industrial Noise and Vibration Control, Prentice-Hall, Englewood Cliffs, NJ.
Rao, S., 1990, Mechanical Vibrations, 2nd edition, Addison-Wesley Publishing Company, New York.
Karnopp,  D., Crosby,  M. J., and Harwood,  R. A., 1974, “Vibration Control Using Semi-Active Force Generators,” J. Eng. Ind., 96, pp. 619–626.
Krasnicki, E. J., 1981, “The Experimental Performance of an On-Off Active Damper,” Shock and Vibration Information Center; The Shock and Vibration Bulletin, Part 1, pp. 125–131.
Fuller, C. R., Elliott, S. J., and Nelson, P. A., 1996, Active Control of Vibration, Academic Press, New York.
Margolis, D. L., 1981, “Semi-Active Fluid Inertia—A New Concept in Vibration Isolation,” American Helicopter Society, Northeast Region National Specialists’ Meeting on Helicopter Vibration: Technology for the Jet Smooth Ride, Hartford, CT, Nov. 2–4.
Krasnicki, E. J., 1984, “The Experimental Performance of an Off-Road Vehicle Utilizing a Semi-Active Suspension,” Shock and Vibration Information Center: The Shock and Vibration Bulletin, Part 3, pp. 135–142.
Rakheja,  S., 1985, “Vibration and Shock Isolation Performance of a Semi-Active ‘On-Off’ Damper,” ASME J. Vibr. Acoust., 107, pp. 398–403.
Whiteford, G. P., and Herbst, P. T., 1997, Vibration Isolation System Including a Passive Tuned Vibration Absorber, US Patent #5687948.
Lai, M., 1996, Tuned Mass Damper, US Patent #5558191.
Lai, M., 1999, Tuned Mass Damper, US Patent #5915508.

Figures

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(a) single degree-of-freedom spring-mass-damper subjected to a base excitation (b) system incorporating a damper attached to an inertial reference, i.e., a skyhook damper
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Transmissibility of a typical spring-mass-damper system with base excitation
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Transmissibility of an isolation system using a skyhook damper
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Model of the virtual skyhook isolator attached to a spring-mass-damper that is subject to base excitation
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Schematic of the experimental test system used to measure the transmissibility of the virtual skyhook isolator
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Measured transmissibility of the experimental test system
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Experimental setup for determining transmissibility using a heavily damped suspension
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Model predictions of transmissibility using parameters of the experimental system

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