Influence of structural damping on stability of the rotor system

CHENG Li; FAN Jia-dong; CHEN Xue-feng

Volume 24 Issue 2

Feb. 2009

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CHENG Li, FAN Jia-dong, CHEN Xue-feng. Influence of structural damping on stability of the rotor system[J]. Journal of Aerospace Power, 2009, 24(2): 360-364.

Citation:

CHENG Li, FAN Jia-dong, CHEN Xue-feng. Influence of structural damping on stability of the rotor system[J]. Journal of Aerospace Power, 2009, 24(2): 360-364.

CHENG Li, FAN Jia-dong, CHEN Xue-feng. Influence of structural damping on stability of the rotor system[J]. Journal of Aerospace Power, 2009, 24(2): 360-364.

Citation:

CHENG Li, FAN Jia-dong, CHEN Xue-feng. Influence of structural damping on stability of the rotor system[J]. Journal of Aerospace Power, 2009, 24(2): 360-364.

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Influence of structural damping on stability of the rotor system

1.
State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
2.
The Engineering Institute, Air Force Engineering University, Xi'an 710038, China

Received Date: 2008-01-11
Rev Recd Date: 2008-07-10
Publish Date: 2009-02-28

Abstract

Abstract

According to the characteristics of the rotor system of a turbo-fan engine,a simplified rotor dynamic model with structural damping and squeezed film damping was constructed.Stability of the rotor system was analyzed by the Routh-Hurwitz criterion and the tracing method of the steady-state.The results show that the structural damping may cause the rotor system to be out of stability within a range of speed over the system's critical speed and may reduce the threshold speed for dynamic instability caused by the squeezed film damping.
- stability,
- rotor system,
- structural damping,
- squeezed film damping