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《Transactions of Beijing Institute of Technology》 2012-03
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Analysis of the Nonlinear Dynamic Behaviors of a Rotor-Ball Bearing System with Elasto-Hydrodynamic Lubrication

ZHANG Tong,WANG Zhan-bin,WANG Xiao-li(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)  
To calculate the stiffness and damping between ball and inner/outer race under the status of elasto-hydrodynamic lubrication(EHL) contact on the surface,the dynamic differential equations of stiffness-damping were established.The system equations were numerically integrated to obtain the results of bifurcation diagram,phase diagram,Poincaré diagram and orbits plots.The effects of radial clearance and rotational speed on the dynamic behaviors were analyzed.The results show that both radial clearance and rotational speed are important factors for the nonlinear dynamic characteristics of the system.The rotor-ball bearing system with dynamic stiffness-damping property displays more complex dynamic characteristics.
【Fund】: 国家自然科学基金资助项目(10872031);; 北京市自然科学基金资助项目(3102025);; 高等学校学科创新引智计划资助项目(B08043)
【CateGory Index】: TH113
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