Research for nonlinear vibration characteristics of sealing structure rub-impact between dual-rotor shafts
Year: 2025
Type: conference-paper
Abstract: In order to study the influence of sealing structure rub-impact between dual-rotor shafts on nonlinear vibration, a dynamic model of an aero-engine dual-rotor system with sealing structure rub-impact between dual-rotor shafts in consideration was established. The nonlinear vibration phenomenon caused by the rubbing of the sealing structure between dual-rotor shafts was investigated through simulation and experimentation. The result shows that the backward whirling natural frequency of the dual-rotor system will be induced by the sealing structure rub-impact between dual-rotor shafts, which is shown as a frequency curve not directly related to the rotating speeds of high/low-pressure rotors in the waterfall diagram. Above the critical speed, the vibration will increase continuously with the increase of rotating speed, which will be detrimental to the aero-engine.
Authors: Yan Li, Yan Ouyang, Huisong Wu, Xiping Kou, Su Jia
Institution: China Aerodynamics Research and Development Center
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
Award: G5721063427
OpenAlex ID: W4408612156