TY - GEN
T1 - EXPERIMENTAL INVESTIGATION OF ROTOR VIBRATION INDUCED BY ROTOR-STATOR RUBBING WITH SOFT COATING
AU - Ma, Ruixian
AU - Lei, Xinliang
AU - Wang, Wen
AU - Liao, Mingfu
N1 - Publisher Copyright:
© 2024 by ASME.
PY - 2024
Y1 - 2024
N2 - Rotor-stator rubbing is common in aero-engines, and the resulting vibration characteristic is affected by the coating material and the structure of rotor and stator. Partial rubbing between a soft rubber coated casing and seal labyrinth teeth on a thin-shell rotating drum is investigated. The vibration response of the drum and the rear end of the rotor is analyzed from the perspective of time, frequency and hologram domains. The time waveform of the drum is significantly distorted by rubbing, resulting in strong fluctuations of the vibration amplitude. The rubbing is observed within a very short time, followed by recovery of stable vibration of the rotor. Rotor-stator coupling vibration is excited by this studied rubbing. The natural frequencies corresponding to the pith diameter vibration modes both of the drum and the casing can be observed in the vibration spectrums of the drum. The synchronous forward whirl is suppressed to some extend by rubbing, whereas the synchronous backward whirl is enhanced. The smaller the whirl amplitude ratio between the forward whirl and backward whirl, the more serious the rubbing. The vibration at the rotor rear end is hardly affected.
AB - Rotor-stator rubbing is common in aero-engines, and the resulting vibration characteristic is affected by the coating material and the structure of rotor and stator. Partial rubbing between a soft rubber coated casing and seal labyrinth teeth on a thin-shell rotating drum is investigated. The vibration response of the drum and the rear end of the rotor is analyzed from the perspective of time, frequency and hologram domains. The time waveform of the drum is significantly distorted by rubbing, resulting in strong fluctuations of the vibration amplitude. The rubbing is observed within a very short time, followed by recovery of stable vibration of the rotor. Rotor-stator coupling vibration is excited by this studied rubbing. The natural frequencies corresponding to the pith diameter vibration modes both of the drum and the casing can be observed in the vibration spectrums of the drum. The synchronous forward whirl is suppressed to some extend by rubbing, whereas the synchronous backward whirl is enhanced. The smaller the whirl amplitude ratio between the forward whirl and backward whirl, the more serious the rubbing. The vibration at the rotor rear end is hardly affected.
KW - aero-engine
KW - backward whirl
KW - coupling vibration
KW - rotor-stator rubbing
KW - whirl amplitude ratio
UR - http://www.scopus.com/inward/record.url?scp=85204460019&partnerID=8YFLogxK
U2 - 10.1115/GT2024-129585
DO - 10.1115/GT2024-129585
M3 - 会议稿件
AN - SCOPUS:85204460019
T3 - Proceedings of the ASME Turbo Expo
BT - Structures and Dynamics - Fatigue, Fracture, and Life Prediction; Probabilistic Methods; Rotordynamics; Structural Mechanics and Vibration
PB - American Society of Mechanical Engineers (ASME)
T2 - 69th ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, GT 2024
Y2 - 24 June 2024 through 28 June 2024
ER -