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Journal of Vibration and Control
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Vibration Suppression in Bladed-Disk Assemblies With Deliberate Mistuning via Magnetic Bearings

György Szász

Auburn University, Department of Mechanical Engineering, 201 Ross Hall, Auburn, AL 36849, USA

George T. Flowers

Auburn University, Department of Mechanical Engineering, 201 Ross Hall, Auburn, AL 36849, USA

This work is a study of bladed-disk vibration control using magnetic bearings. A simulation model consisting of a shaft/bladed-disk assembly supported by two radial magnetic bearings and a thrust bearing is considered. A simplified model is developed and used to identify controllable vibration modes. This information is then used to discuss the potential effectiveness and limitations of bladed-disk vibration control using shaft-based actuators (the magnetic bearings) on symmetric rotors. A control strategy based on using deliberate bladed mistuning is presented for such systems in light of this discussion.

Key Words: Vibration • blade • control • hub based actuation

Journal of Vibration and Control, Vol. 6, No. 6, 903-921 (2000)
DOI: 10.1177/107754630000600605
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