The recent growth of magnetic bearing applications in the chemical, utility and aerospace industries requires more accurate design tools to insure reliable and effective operation as components of the overall rotor bearing system. This paper provides a novel approach for simulating a flexible rotor suspended in magnetic bearings, accounting for eddy current effects. The manuscript discusses some magnetic bearing fundamentals, leading up to the new methods for modeling. Test results show very good correlation with theory and confirm the importance of considering eddy current effects. Surface conductivity and frequency dependent permeability effects on the B field in the magnet gaps are shown to be very significant on overall system stability. The results in the manuscript should be very useful to the design or test rotor dynamicist.
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June 1995
Research Papers
Eddy Current Effects on the Design of Rotor-Magnetic Bearing Systems
C. Kim,
C. Kim
Department of Mechanical Engineering, Texas A & M University, College Station, TX 77843-3123
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A. B. Palazzolo,
A. B. Palazzolo
Department of Mechanical Engineering, Texas A & M University, College Station, TX 77843-3123
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G. Brown
G. Brown
Dynamics Branch, NASA Lewis MS 23-3, 21,000 Brookpark, Cleveland, OH 44135
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C. Kim
Department of Mechanical Engineering, Texas A & M University, College Station, TX 77843-3123
A. B. Palazzolo
Department of Mechanical Engineering, Texas A & M University, College Station, TX 77843-3123
A. Kascak
U. S. Army
G. Brown
Dynamics Branch, NASA Lewis MS 23-3, 21,000 Brookpark, Cleveland, OH 44135
J. Vib. Acoust. Jun 1995, 117(B): 162-170 (9 pages)
Published Online: June 1, 1995
Article history
Received:
December 1, 1994
Online:
February 26, 2008
Citation
Kim, C., Palazzolo, A. B., Kascak, A., and Brown, G. (June 1, 1995). "Eddy Current Effects on the Design of Rotor-Magnetic Bearing Systems." ASME. J. Vib. Acoust. June 1995; 117(B): 162–170. https://doi.org/10.1115/1.2838658
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