文献类型：期刊文献

英文题名：Nonlinear vibration and stability analysis of a flexible rotor supported on angular contact ball bearings

作者：Cui, Li[1];Zheng, Jianrong[1]

机构：[1]E China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：20

期号：12

起止页码：1767

外文期刊名：JOURNAL OF VIBRATION AND CONTROL

收录：;EI(收录号：20143618125032);WOS:【SCI-EXPANDED(收录号:WOS:000340950700001)】；

基金：This work was supported by the National Natural Science Foundation of China (grant numbers 50905061 and 50805046) and the Fundamental Research Funds for the Central Universities and Postdoctoral Science Foundation of China (grant number 2011M500554).

语种：英文

外文关键词：Angular contact ball bearing; flexible rotor system; nonlinear vibration; stability; bifurcation

摘要：Flexible rotor systems supported by angular contact ball bearings display very complicated nonlinear behavior due to clearance and nonlinear Hertzian contact force. In this paper, a nonlinear vibration theoretical model for a flexible rotor-bearing system is derived in which the dynamic model of the shaft element, disk, coupling, nonlinear contact deformations and forces of the ball bearing are established. Nonlinear responses and orbits analysis of a flexible rotor angular contact ball bearing system are studied using the numerical integration method and maximal Lyapunov exponent. Bifurcation and stability of periodic motion of the flexible rotor-bearing system are studied using the continuation-shooting method and Floquet multipliers. Influences of initial contact angles, unbalance, damping factor, axial preloads, bending moments, stiffness ratio and rotating speed on stability and the bifurcation of periodic motion of the rotor-bearing system are analyzed. Finally, the theoretical model for a flexible rotor-bearing system is experimentally verified.