微织构对三油楔滑动轴承动静特性的影响  

The influence of surface texture on three-lobe journal bearing

作　　者：张扬 陈淑江[1] ZHANG Yang;CHEN Shujiang(College of Mechanical Engineering,Shandong University,Jinan 250061,CHN)

机构地区：[1]山东大学机械工程学院,山东济南250061

出　　处：《制造技术与机床》2021年第2期125-130,共6页Manufacturing Technology & Machine Tool

基　　金：山东省自然科学基金“超精密静压主轴回转精度主动控制新方法研究”(ZR2019MEE064)。

摘　　要：为进一步提升三油楔动压滑动轴承运行时的动静态特性,采用表面织构技术来提升轴承承载力、摩擦学性能以及动态稳定性。该研究在动压润滑状态下,建立含球冠状微凹坑织构三油楔滑动轴承的数学模型,用有限差分法求解,并利用MATLAB软件仿真在织构参数多重因素影响下的轴承动静态特性。结果表明,当织构个数一定时,布置在楔形间隙升压区出口处,面积率较大的球冠状织构,存在最优织构深度,使三油楔滑动轴承静态特性最佳,此时油膜刚度系数、阻尼系数也较大,轴承动态稳定性能优异。In order to further improve the dynamic and static characteristics of the three-lobe hydrodynamic journal bearings,the surface texture technology is used to improve the bearing load capacity,tribological performance and dynamic stability.Under the condition of hydrodynamic lubrication,the mathematical model of three-lobe journal bearing with spherical cap micro texture is established,solved by finite difference method(FDM),and the dynamic and static characteristics of bearing are simulated by MATLAB software.It is found that under the certain operating conditions,the spherical cap texture with larger area ratio in the position I,and there is an optimal texture depth,which improve the static characteristics of the three-lobe journal bearing most.Meanwhile,the oil film stiffness coefficient and damping coefficient are also large,optimizing the dynamic stability of the bearing.

关 键 词：三油楔滑动轴承 表面织构 润滑性能 动态特性 

分 类 号：TH117[机械工程—机械设计及理论]