动压径向滑动轴承油膜特性的数值计算  

Numerical Calculation and Analysis of Oil Film Characteristics of Hydrodynamic Radial Sliding Bearing

作　　者：田奇勇[1] 黄文俊[1] 饶杰[1] 朱晓农[1] 王贤震 Qi-yong Tian;Wen-jun Huang;Jie Rao;Xiao-nong Zhu;Xian-zhen Wang(Hefei General Machinery Research Institute;Anhui Anfeng Fan Co.,Ltd)

机构地区：[1]合肥通用机械研究院 [2]安徽安风风机有限公司

出　　处：《风机技术》2018年第1期44-47,共4页Chinese Journal of Turbomachinery

基　　金：安徽省重点研究与开发计划项目(1704a0902005)

摘　　要：传统轴承参数计算方法是利用已有的宽径比下轴承静动态参数的图表,假定轴承工作平均温度,按所选润滑油确定油的粘度和已知的轴承尺寸和运转参数,计算出轴承承载量系数F_m,再由F_m和轴承宽径比按已知的图表插值求得轴承工作状态下的各参数值,这种计算方法不方便且有较大误差。本文基于有限差分法,采用MATLAB编程计算,对已知外载荷和宽径比的实际轴承直接求解完整二维流动Reynolds方程,得到油膜厚度和油膜压力分布。以某动压径向轴承为例,采用本文方法计算实际轴承参数,取得较好的计算精度。该方法有助于提高动压滑动轴承的设计质量,为轴承故障诊断提供了一种可行的途径。The traditional calculation method of bearing parameters is not very convenient and easily got a larger error.In this paper,the complete two-dimensional Reynolds equation was solved with the given load and width-radius ratio of actual bearing based on finite difference method and programming with MATLAB software,the oil film thickness and oil film pressure distribution of sliding bearing were obtained.Take a dynamic pressure radial bearing as an example,the actual bearing parameters was calculated with the improved method and good results were achieved.

关 键 词：径向滑动轴承 油膜压力 有限差分法 数值计算 

分 类 号：TH133[机械工程—机械制造及自动化] TH137