三油楔轴承轴心位置及摩擦力和承载能力的影响参数分析  

Impacting Parameters Analysis of Equilibrium Position and Friction and Loading Capacity for the Three Lobe Journal Bearing

作　　者：钱坤[1] 

机构地区：[1]杭州职业技术学院,浙江杭州310018

出　　处：《机床与液压》2008年第10期232-234,共3页Machine Tool & Hydraulics

基　　金：杭州职业技术学院院级课题(200801007);杭州市重点实验室;重点学科基金资助项目

摘　　要：运用差分法求解三油楔轴承中的非线性油膜力,采用弦截法求解了三油楔轴承的轴心平衡位置,并讨论了轴旋转速度对轴心平衡位置和摩擦力的影响。通过对润滑状态的模拟,得出如下结论:三油楔轴承的安装角对轴承油膜的承载能力有很大影响;速度增大的过程中,偏心距和偏心方向随速度的变化都是非线性的,速度较低的时候变化快,速度大的时候趋于稳定;速度与摩擦力之间是一种非线性关系,在正常的工况下可以作线性关系看,在启动的瞬间,这种非线性关系尤为明显。The nonlinear pressure distribution of three lobe journal bearing was simulated using Finite Difference Method. The influence of rotating speed on the equilibrium position and friction of three lobe journal bearing was discussed based on solving of the equilibrium position using the string sheet method. The results based on the simulation and analysis show that a great influence on the loading capacity is introduced by the installation angle of three lobe journal bearing; the eccentricity and eccentric direction vary with the rotating speed in nonlinear way ; the influence of the rotating speed on the friction can be seen as linear when shaft works in its normal situation, but it is nonlinear when the shaft starts up or works in lower speed.

关 键 词：三油楔轴承 雷诺方程 平衡位置 油膜扭矩 旋转速度 

分 类 号：TH117[机械工程—机械设计及理论]