A study on the nonlinear dynamic characteristics of a dual-rotor system subjected to internal and external excitations

被引：0
|
作者：
Xiang L. [1 ]
Hu Y. [1 ]
Chen K. [1 ]
Bing H. [2 ]
Hu A. [2 ]
机构：
[1] School of Energy, Power and Mechanical Engineering, North China Electric Power University, Baoding
[2] Huadian Electric Power Research Institute Co., Ltd., Hangzhou
[3] Hehei Key Laboratory of Electric Machinery Health Maintenance & Failure Prevention, Baoding
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 12期
关键词：
dual-rotor system; dynamics; inter-shaft bearing; internal and external excitations; nonlinear response;
D O I：
10.13465/j.cnki.jvs.2023.012.008
中图分类号：
学科分类号：
摘要：
A nonlinear dynamic model of a dual-rotor system with inter-shaft bearing was deduced and established, for which the unbalance of the dual-rotor system and the nonlinear factors of inter-shaft bearings were considered. The nonlinear dynamic characteristics of the dual-rotor system subjected to internal and external excitations were studied. Firstly, the amplitude frequency responses of the dual-rotor system were presented and the primary resonance characteristics of high and low pressure rotor were obtained, basing on the nonlinear dynamic model of the dual-rotor system with inter-shaft bearing. Then, considering the influence of nonlinear parameters of the dual-rotor system, the nonlinear dynamic responses of the dual-rotor system were analyzed under internal and external excitations. Through the bifurcation diagram, the axis orbit diagram, the Poincare cross-sectional diagram, the time-domain waveform diagram and the spectrum diagram, the motion state and frequency characteristics of high and low pressure rotor under the influence of nonlinear parameters were obtained with the changes of excitation frequency. Finally, the influence of unbalance on the nonlinear response characteristics of the dual-rotor system was analyzed, and the evolution law of dynamic characteristics of high and low pressure rotor under the change of unbalance was investigated. The results can provide reference for the dynamic characteristic design of a dual-rotor system and the fault diagnosis of high and low pressure rotor. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：69 / 76+108
相关论文
共 15 条
  • [1] XIANG L, ZHANG Y, HU A J., Crack characteristic analysis of multi-fault rotor system based on whirl orbits, Nonlinear Dynamics, 95, 4, pp. 2675-2690, (2019)
  • [2] FERRARIS G, MAISONNEUVE V, LALANNE M., Prediction of the dynamic behavior of non-symmetrical coaxial co-or counter-rotating rotors, Journal of Sound and Vibration, 195, 4, pp. 649-666, (1996)
  • [3] LUO Guihuo, HU Xuan, YANG Xiguan, Nonlinear dynamic performance analysis of counter-rotating dual-rotor system [J], Journal of Vibration Engineering, 22, 3, pp. 268-273, (2009)
  • [4] FU Yiqiang, CHEN Yushu, HOU Lei, Et al., A counter-rotating dual-rotor system's hysteretic characteristics, Journal of Vibration and Shock, 34, 15, pp. 23-27, (2015)
  • [5] GAO Peng, HOU Lei, CHEN Yushu, Nonlinear vibration characteristics of a dual-rotor system with inter-shaft bearing [J], Journal of Vibration and Shock, 38, 15, pp. 1-10, (2019)
  • [6] LI Jing, CAO Shuqian, GUO Hulun, Et al., Vibration performance of dual rotor systems considering elastohydrodynamic lubrication of intershaft bearings [J], Journal of Harbin Institute of Technology, 53, 6, pp. 138-147, (2021)
  • [7] CAO P, HOU L, YANG R, Et al., Local defect modelling and nonlinear dynamic analysis for the inter-shaft bearing in a dual-rotor system, Applied Mathematical Modelling, 68, pp. 29-47, (2019)
  • [8] JIA Yan, LIU Yongbao, WANG Qiang, Et al., Influence of intermediate bearing clearance and rigidity on nonlinear characteristics of dual rotor system, Journal of Ordnance Equipment Engineering, 42, 5, pp. 31-36, (2021)
  • [9] GUSKOV M, SINOU J J, THOUVEREZ F., Experimental and numerical investigations of a dual-shaft test rig with intershaft bearing, International Journal of Rotating Machinery, 128, 2, pp. 308-321, (2007)
  • [10] LU Z Y, ZHONG S, CHEN H Z, Et al., Nonlinear response analysis for a dual-rotor system supported by ball bearing, International Journal of Non-Linear Mechanics, 128, (2021)
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