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TECHNICAL PAPERS

Theory and Test Correlation for Laminate Stacking Factor Effect on Homopolar Bearing Stiffness

[+] Author and Article Information
A. Kenny, A. Palazzolo

Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123

G. T. Montague, A. F. Kascak

NASA Lewis Research Center, Cleveland, OH

J. Eng. Gas Turbines Power 126(1), 142-146 (Mar 02, 2004) (5 pages) doi:10.1115/1.1615258 History: Received December 01, 2000; Revised March 01, 2001; Online March 02, 2004
Copyright © 2004 by ASME
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References

Fukata,  S., Yutani,  K., and Kouya,  Y., 1998, “Characteristics of Magnetic Bearings Biased With Permanent Magnets in the Stator,” JSME Int. J., Ser. C, 41(2), pp. 206–213.
Barton,  M. L., 1980, “Loss Calculation in Laminated Steel Utilizing Anisotropic Magnetic Permability,” IEEE Trans. Power Appar. Syst., PAS-99(3), pp. 1280–1287.
Timothy, M. A., and Preston, T. W., 1995, “Finite Element Modeling of Laminated Structures in Electrical Machines,” Proceedings IEE, 7th International Conference on Electrical Machines and Drives, Institution of Electrical Engineers, London, pp. 121–125.
De Weese, R. T., 1996, “A Comparison of Eddy Current Effects in a Single Sided Magnetic Thrust Bearing,” thesis, Texas A&M University, College Station, TX.
Kondoleon, A. S., 2000, “Soft Magnetic Alloys for High Temperature Radial Magnetic Bearings,” Proceedings 7th International Symposium on Magnetic Bearings, ETH-Zurich (Swiss Federal Institute of Technology), Zurich, Switzerland, pp. 111–116.
Beausmeister, T., et al., ed., 1978, Mark’s Standard Handbook for Mechanical Engineers, 8th Ed., McGraw-Hill, New York.
Rastogi,  P. K., 1988, “Lamination Steel Technology for Appliance Industry,” IEEE Trans. Ind. Appl., 24(6), pp. 982–986.
Magnetic Metals Inc., 2000, Tape Wound Core Design Manual, Westiminister, CA.

Figures

Grahic Jump Location
Laminated bias flux path in a homopolar magnetic bearing
Grahic Jump Location
Relative permeability of laminate stack
Grahic Jump Location
Simple theoretical relation between .15-mm thick plate surface roughness and stacking factor
Grahic Jump Location
Homopolar bearing bias path circuit model
Grahic Jump Location
Homopolar bearing for position stiffness measurements
Grahic Jump Location
Finite element model of bearing

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