An Efficient Damping Technique for the Unstable Hysteretic Rotor Whirl by Proper Suspension Systems

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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.
Lingua originaleEnglish
Numero di pagine0
Stato di pubblicazionePublished - 2009

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Bearings (structural)
Rotors
Damping
Stiffness
Hysteresis
Anisotropy

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title = "An Efficient Damping Technique for the Unstable Hysteretic Rotor Whirl by Proper Suspension Systems",
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.",
keywords = "conical whirl, hysteresis, rotating machinery",
author = "Francesco Sorge and Marco Cammalleri",
year = "2009",
language = "English",

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TY - CONF

T1 - An Efficient Damping Technique for the Unstable Hysteretic Rotor Whirl by Proper Suspension Systems

AU - Sorge, Francesco

AU - Cammalleri, Marco

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

KW - conical whirl

KW - hysteresis

KW - rotating machinery

UR - http://hdl.handle.net/10447/41228

M3 - Other

ER -