稳定动态工况下浮环轴承油膜压力特性研究  

Research on the oil film pressure of floating-ring bearing in the steady dynamic state

作　　者：蒋枚利 刘红丹 周东 周鹏[1] 宋豫川[1] 

机构地区：[1]重庆大学机械工程学院制造工程研究所,重庆400044 [2]重庆江增船舶重工有限公司,重庆402263

出　　处：《新型工业化》2013年第6期70-77,共8页The Journal of New Industrialization

基　　金：国家"十二五"科技支撑计划(2012BAF01B01)

摘　　要：基于流体动力润滑理论,分析研究了浮环轴承在稳定动态工况下浮环内外层油膜的压力组成、分布及承载力状况。首先根据浮环轴承的润滑机理,推导出浮环内外油膜压力的动载Reynolds方程,然后在有限长及雷诺边界条件下,通过运用有限差分法结合Matlab编程求解模拟出内外油膜压力的分布,并进一步研究了油膜压力、承载力随偏心率及宽径比变化的关系。研究表明:稳定动态工况下浮环轴承油膜压力由旋转效应和挤压效应叠加组成,且随时间作周期性的变化;偏心率越大油膜压力及承载力越大;宽径比越大油膜压力和承载力也越大;且浮环内层油膜较外层油膜的压力和承载力大。Based on the theory of hydrodynamic lubrication, the inner/outer oil film pressure, pressure composition and load-carrying capacity of floating-ring bearing in the steady dynamic state were researched. According to the lubrication mechanism of floating-ring bearing, dynamic load Reynolds equation about inner/outer oil film pressure was deduced at first, then film pressure distribution at the finite-length and Reynolds boundary conditions was solved and simulated by using finite difference method and Matlab. Moreover, the relationship of film pressure and load-carrying capacity vary with the eccentricity and the ratio of width to diameter were also studied. Research indicates that film pressure of floating-ring bearing consists of rotation and extrusion effect , and it changes periodically with time in the steady dynamic state.The higher the eccentricity or the ratio of width to diameter, the greater the film pressure and the load-carrying capacity. The pressure and load-carrying capacity of inner oil film are higher than the outer oil film.

关 键 词：浮环轴承 稳定动态工况 雷诺方程 油膜压力 

分 类 号：U46[机械工程—车辆工程] TQ0[交通运输工程—载运工具运用工程]