TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Actively Controlled Bearing Dampers for Aircraft Engine Applications

[+] Author and Article Information
John M. Vance

Mechanical Engineering Department, Texas A & M University, College Station, TX 77843

Daniel Ying

Turbine Manufacturing Division, ABB Power Generation, Inc.

Jorgen L. Nikolajsen

Staffordshire University, POB 333, Stafford ST18 ODF, U.K.

J. Eng. Gas Turbines Power 122(3), 466-472 (May 15, 2000) (7 pages) doi:10.1115/1.1286922 History: Received March 09, 1999; Revised May 15, 2000
Copyright © 2000 by ASME
Your Session has timed out. Please sign back in to continue.


Nikolajsen, J. L., and Hoque, M. S., 1988, “An Electroviscous Damper,” “Rotordynamic Instability Problems in High-Performance Turbomachinery,” NASA CP 3026, pp. 133–141.
Nikolajsen,  J. L., and Hoque,  M. S., 1990, “An Electroviscous Damper for Rotor Applications,” ASME J. Vibr. Acoust., 112, pp. 440–443.
Duff,  A. W., 1896, “The Viscosity of Polarized Dielectrics,” Phys. Rev., 4, No. 1, pp. 23–38.
Vance, J. M., and San Andres, L., 1999, “Analysis of Actively Controlled Coulomb Damping for Rotating Machinery,” presented at the ASME Turbo-Expo ’99 Conference, Indianapolis, IN.
Vance, J. M., and Ying, D., 1999, “Experimental Measurements of Actively Controlled Bearing Damping With an Electrorheological Fluid,” presented at the ASME Turbo-Expo ’99 Conference, Indianapolis, IN.
Vance, J. M., 1988, Rotordynamics of Turbomachinery, Wiley, New York, p. 243.
Zeidan,  F. Y., and Vance,  J. M., 1989, “Cavitation Leading to a Two Phase Fluid in a Squeeze Film Damper,” STLE Tribol. Trans., 32, pp. 100–104.
Zeidan,  F. Y., and Vance,  J. M., 1990, “Cavitation and Air Entrainment Effects on the Response of Squeeze Film Supported Rotors,” ASME J. Tribol., 112, pp. 347–353.
Valenti,  M., 1995, “Upgrading Turbine Engine Technology,” Mech. Eng., 117, pp. 56–60.
Ying, D. Z., 1993, “Experimental Study of an Electrorheological Bearing Damper With a Parametric Control System,” Master of Science thesis, Mechanical Engineering, Texas A&M University, College Station, TX.
San Andres,  L. A., 1992, “Analysis of Hydrostatic Journal Bearings With End Seals,” ASME J. Tribol., 114, pp. 802–811.
Palazzolo,  A. B., , 1989, “Piezoelectric Pushers for Active Vibration Control of Rotating Machinery,” ASME J. Vibr. Acoust., 111, pp. 298–305.
Sundararajan,  P., and Vance,  J. M., 1995, “A Theoretical and Experimental Investigation of a Gas-Operated Bearing Damper for Turbomachinery: Part I—Theoretical Model and Predictions,” ASME J. Eng. Gas Turbines Power, 117, No. 4, October, pp. 742–749.
Sundararajan,  P., and Vance,  J. M., 1995, “A Gas-Operated Bearing Damper for Turbomachinery—Theoretical Predictions versus Experimental Measurements: Part II—Experimental Results and Comparison With Theory,” ASME J. Eng. Gas Turbines Power, 117, No. 4, pp. 750–756.
Nikolajsen,  J. L., Holmes,  R., and Gondhalekar,  V., 1979, “Investigation of an Electromagnetic Damper for Vibration Control of a Transmission Shaft,” Proc. MechE, 193, pp. 331–336.
Active Magnetic Bearings, 1986, Magnetic Bearings Inc., Radford, VA.
Nikolajsen, J. L., 1989, “Experimental Investigation of an Eddy-Current Bearing,” in Magnetic Bearings, G. Schweitzer, ed., Springer, New York, pp. 111–118.
Cherry,  L. B., 1960, “Electro-Magnetic Induction Damping of Vibratory Motion,” Noise Control, Sept/Oct , pp. 8–11.
Choi, K. N., and Nikolajsen, J. L., 1989, “The Effect of Vibration Frequency in Eddy Current Dampers,” internal report, Texas A&M University, College Station, TX.
Nikolajsen, J. L., and Palazzolo, A. B., 1992, “Electromagnetic Force Application in Rotordynamic Research,” in Tani, J., and Takagi, T., eds., Electromagnetic Forces and Applications, Elsevier, New York, pp. 163–166.


Grahic Jump Location
Cross section of the ER damper
Grahic Jump Location
Electroviscous fluid behavior (from Nikolajsen and Hoque, 1990)
Grahic Jump Location
Effect of viscous damping on vibration amplitude
Grahic Jump Location
Dimensionless bearing force vs. frequency ratio
Grahic Jump Location
Coulomb friction test rig with dry friction disks
Grahic Jump Location
DC electromagnetic damper operating principle
Grahic Jump Location
Eddy-current damper operating principle
Grahic Jump Location
Eddy-current damper rig
Grahic Jump Location
Measured eddy current damping
Grahic Jump Location
Predicted eddy current damping
Grahic Jump Location
ER damper weight vs. yield stress of the ER fluid
Grahic Jump Location
Specific damping of the ER damper vs. yield shear stress of the ER fluid




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In