弹流润滑球轴承-转子系统载荷特性分析  

Analysis of the Load Behavior of a Rotor-Ball Bearing with Elasto-Hydrodynamic Lubrication

作　　者：王占彬[1] 王晓力[2] 

机构地区：[1]郑州宇通客车股份有限公司,河南郑州450061 [2]北京理工大学机械与车辆学院,北京100081

出　　处：《机械设计与制造》2016年第12期35-38,共4页Machinery Design & Manufacture

摘　　要：基于点接触弹性流体动力润滑理论,搭建了球轴承在弹流润滑状态下刚度-阻尼的计算公式,依据该动态刚度-阻尼建立了球轴承-转子系统动力学微分方程,采用数值方法求解系统在不同参数条件下的轴心轨迹、相图、分岔图,分析径向载荷对轴承-转子系统动力学特性的影响。研究表明,在弹流润滑油膜的作用下,具有动态刚度和阻尼的滚动轴承-转子系统显示出了更为复杂的非线性动力学特性;径向载荷是影响轴承转子系统的重要因素之一,较大的径向载荷有利于系统周期性运转。Based on the point contact Elasto-Hydrodynamic Lubrication theory （EHL）,the computational formulas of the ball bearing stiffness and damping are analysed. The differential equation is established with the dynamic stiffness and the dynamic damping. The system equations are numerically integrated to obtain the results of orbits plots, phase diagram, Bifurcation diagram with different parameters. The effects of radial load on the dynamic behaviors are analysed.The results show that the rotor-ball bearing system with the dynamic stiffness and the dynamic damping displays more complex dynamic characteristics under lubrication; Radial load is important factors for the nonlinear dynamic characteristics of the system,and the big load is good at the operation of system.

关 键 词：球轴承 弹流润滑 刚度-阻尼 轴心轨迹 非线性动力学 

分 类 号：TH16[机械工程—机械制造及自动化] TH133