This paper shows as the destabilising influence of the shaft hysteresis on the supercritical rotor whirl can be efficiently counterbalanced by external dissipative sources. After calculating the steady whirling paths of the rotor and the bearing due to unbalance, the stability is checked by the Routh-Hurwitz procedure, investigating the influence of the stiffness anisotropy of the supports. A fairly interesting result is that the instability phenomena can be conveniently prevented by different suspension stiffness in the horizontal and vertical planes.
Sorge, F., Cammalleri, M. (2009). An Efficient Damping Technique for the Unstable Hysteretic Rotor Whirl by Proper Suspension Systems. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? ECOTRIB 2009, European Conference on Tribology, Pisa, Italy, 7-10/06/2009.
An Efficient Damping Technique for the Unstable Hysteretic Rotor Whirl by Proper Suspension Systems
SORGE, Francesco;CAMMALLERI, Marco
2009-01-01
Abstract
This paper shows as the destabilising influence of the shaft hysteresis on the supercritical rotor whirl can be efficiently counterbalanced by external dissipative sources. After calculating the steady whirling paths of the rotor and the bearing due to unbalance, the stability is checked by the Routh-Hurwitz procedure, investigating the influence of the stiffness anisotropy of the supports. A fairly interesting result is that the instability phenomena can be conveniently prevented by different suspension stiffness in the horizontal and vertical planes.
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