Nonlinear dynamics of a rub-impact rotor supported by oil film bearings with a elastic stator
Tao Hai-liang1,2, Pan Bo1,2,Gao Qing1, Tan Chun-qing1, Chen Hai-sheng1
1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;2. Graduate University of the Chinese Academy of Sciences, Beijing 100080, China
Abstract：A dynamic model of rotor-bearing system with rub-impact fault was established, taking the stator elasticity and nonlinear oil-film force into account. The response of the rotor with rub-impact fault was calculated by Rugge-Kutta method, and the bifurcation diagrams were obtained to analyze dynamic characteristics of the system. The dynamic characteristics of the system with or without rubbing were compared and discussed. The effects of stator mass and rubbing stiffness on the response of the system was studied. The results indicate that the bigger stator mass and rubbing stiffness is, the greater coupling effects will happen on the rotor and stator. If the rubbing stiffness is small enough, the rubbing force of the stator has little effect on the dynamic characteristics of the system.
陶海亮;潘波;高庆;谭春青;陈海生. 具有弹性静子的碰摩转子轴承系统非线性动力特性研究[J]. , 2013, 32(15): 197-202.
Tao Hai-liang;Pan Bo;Gao Qing;Tan Chun-qing;Chen Hai-sheng. Nonlinear dynamics of a rub-impact rotor supported by oil film bearings with a elastic stator. , 2013, 32(15): 197-202.
2013, Vol. 32 
