首页|Transient state analysis of a rub-impact rotor system during maneuvering flight

Transient state analysis of a rub-impact rotor system during maneuvering flight

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Maneuvering flight substantially affects the dynamic behavior of rotors;particularly,such flight may cause rubbing between a rotor and stator,which is one of the most serious damages in aircraft engines.In this paper,a nonlinear dynamic model for describing the dynamic character-istics of a rub-impact rotor system during maneuvering flight is established based on the Lagrange equations.Subsequently,numerical simulations employing the Newmark method are performed,delving into the detailed discussion of the influence of parameters such as rotational speed and maneuvering flight on the transient and steady-state responses of the rotor system.The effect mech-anism of maneuver load and its coupling with rub impact is revealed.The results show that the impact response induced by maneuvering flight is more obvious in the subcritical state than in the supercritical state.The additional stiffness and damping are also induced;in particular,the additional damping has a coupling effect.Moreover,the rub impact imposes an additional con-straint on the rotor system,thereby weakening the influence of the maneuver load and becoming the major factor that determines the dynamic behavior of the rotor system at high speeds.

Maneuvering flightRub impactRotor systemDynamic responseImpact response

Jun WANG、Yunfei LIU、Zhaoye QIN、Liang MA、Fulei CHU

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Beijing Key Laboratory of Health Monitoring and Self-Recovery for High-End Machinery Equipment,Beijing University of Chemical Technology,Beijing 100029,China

State Key Laboratory of Tribology,Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China

College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China

National Natural Science Foundation of ChinaScience Center for Gas Turbine Project,ChinaScientific Research Projects of Tianjin Education Commission,ChinaScientific Research Projects of Tianjin Education Commission,China

12202229P2022-B-Ⅲ-002-0012020KJ0182020KJ060

2024

10.1016/j.cja.2023.11.014

中国航空学报(英文版)
中国航空学会

中国航空学报(英文版)

CSTPCDEI
影响因子：0.847
ISSN：1000-9361
年,卷(期)：2024.37(7)
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