Nonlinear Characteristics of Rub-impact Rotor-bearing System with Slowly Varying Mass
A nonlinear dynamic model of rub-impact rotor bearing system with slowly varying mass was set up. The periodic solution of system was analyzed by continuation shooting algorithm for periodic solution of nonlinear non autonomous system, and the stability of system periodic motion and unsteady law are discussed by Floquet theory. There exist periodic, quasi-periodic and chaotic motions in the response of the rub-impact rotor-bearing system with slowly varying mass. The unstable form of it is saddie-node bifurcation. There are periodic-doubling bifurcation and saddle-node bifurcation at different rotate speed. In the region of double critical rotate speed, the main motion of the system is quasiperiodic motion. The conclusions provide theoretic basis reference for the fault diagnosis of the rotor-bearing system.
rotor-bearing system slowly varying mass rubimpact nonlinear characteristics
Yuegang LUO Yuanhu DU Zhaohui REN Bangchun WEN
Research Institute of Mechanism Electron and Control Engineering Dalian Nationalities University Dal School of Mechanical Engineering and Automation Northeastern University Shenyang 110004,China
国际会议
长沙
英文
1041-1044
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）