The use of active magnetic bearings (AMB) for turbomachinery has experienced substantial growth during the past two decades. The advantages for many applications make AMB’s a very attractive solution for potentially low loss and efficient support for both radial and thrust loads. New machinery must be shop tested prior to shipment to the field for installation on-line. For AMB turbomachinery, one additional test is the operation of the auxiliary drop or overload bearings. A major concern is ability of the selected auxiliary bearing to withstand the contact forces following an at speed rotor drop. The proper design of AMB machinery requires the calculation of the anticipated loading for the auxiliary bearings. Analytical techniques to predict the rotor transient response are reviewed. Results of transient response evaluation of a full-size compressor rotor are presented to illustrate some of the important parameters in the design for rotor drop.
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April 1999
Research Papers
Evaluation of AMB Turbomachinery Auxiliary Bearings
R. G. Kirk
R. G. Kirk
Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0238
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R. G. Kirk
Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0238
J. Vib. Acoust. Apr 1999, 121(2): 156-161 (6 pages)
Published Online: April 1, 1999
Article history
Received:
September 1, 1998
Online:
February 26, 2008
Citation
Kirk, R. G. (April 1, 1999). "Evaluation of AMB Turbomachinery Auxiliary Bearings." ASME. J. Vib. Acoust. April 1999; 121(2): 156–161. https://doi.org/10.1115/1.2893958
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