Nonlinear vibration response characteristics of a dual-rotor-bearing system with squeeze film damper

作     者：Xinxing MA Hui MA Haiqin QIN Xumin GUO Chenguang ZHAO Mingyue YU Xinxing MA;Hui MA;Haiqin QIN;Xumin GUO;Chenguang ZHAO;Mingyue YU

作者机构：School of Mechanical Engineering and AutomationNortheastern UniversityShenyang J10819China Institute of VibrationShock and NoiseShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Vibration and Control of Aero-Propulsion System Ministry of EducationNortheastern UniversityShenyang 110819China Department of Aeronautical MechanicsNaval Aeronautical and Astronautical University Qingdao CampusQingdao 266041China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2021年第34卷第10期

页      面：128-147页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：supported by the National Natural Science Foundation of China(Nos.11772089,11972112) the Fundamental Research Funds for the Central Universities,China(Nos.N170308028,N2003014 and N180708009) LiaoNing Revitalization Talents Program,China(Nos.XLYC1807008) 

主　　题：dual-rotor rolling bearing squeeze film damper finite element method vibration response 

摘      要：Rolling bearing and Squeeze Film Damper(SFD)are used in rotor support structures,and most researches on the nonlinear rotor-bearing system are focused on the simple rotor-bearing *** work emphasizes the comparative analysis of the influence of SFD on the nonlinear dynamic behavior of the dual-rotor system supported by rolling ***,a reduced dynamic model is established by combining the Finite Element(FE)method and the freeinterface method of component mode *** proposed model is verified by comparing the natural characteristics obtained from an FE model with those from the ***,the steady-state vibration responses of the system with or without SFD are solved by the numerical integration *** influences of the ball bearing clearance,unbalance,centralizing spring stiffness and oil film clearance of SFD on the nonlinear steady-state vibration responses of the dual-rotor system are *** show that SFD can effectively suppress the amplitude jump of the dual rotor system sustaining two rotors unbalance *** the ball bearing clearance or unbalance increases,the amplitude jump phenomenon becomes more obvious,the resonance hysteresis phenomenon strengthens or weakens,the resonant peaks shift to the left or the right,*** with unreasonable parameters will aggravate the system vibration,the smaller the oil film clearance,the better the damping performance of the SFD,the larger the centralizing spring stiffness is,the larger resonance amplitudes are.