评价箔片径向空气轴承载荷性能的一种经验方法  

An Empirical Method to Estimate the Load Capacity of Foil Air Journal Bearings

作　　者：杨金焕[1] 姚艳霞[1] 夏葵[1] 朱朝辉[1] 陈纯正[1] 

机构地区：[1]西安交通大学制冷与低温研究所,710049

出　　处：《润滑与密封》2003年第4期65-67,共3页Lubrication Engineering

摘　　要：介绍一种简单的“经验法则”来评价箔片空气轴承的载荷性能,它是一种可挠面的动压气体轴承,正在研究其在无油透平机械中的应用。经验法则是基于基本原理和文献中报道的可靠实验数据得出的,通过一个经验值——载荷系数D,将轴承的载荷性能和轴承的尺寸、速度联系起来。在经验法则中,轴承承载力是轴承转速和轴承设计面积的线性函数。轴承载荷系数D和轴承弹性支承结构的设计特点和轴承运行工况(温度、速度)有关。This paper introduces a simple 'Rule of Thumb' (ROT) to estimate the load capacity of foil air journal bearings, which are self-acting compliant-surface hydrodynamic bearings considered for oil-free turbomachinery applications. The ROT is based on basic principles and data available in the literature and it relates bearing load capacity to the bearing size and speed through an empirically based load capacity coefficient, D. It is shown that load capacity is a linear function of bearing surface velocity and bearing projected area. Furthermore, it was found that the load capacity coefficient, D, is related to the design features of the bearing compliant members and operating conditions (speed and ambient temperature).

关 键 词：箔片空气轴承 载荷性能 经验法则 动压气体轴承 评价 

分 类 号：TH133.3[机械工程—机械制造及自动化]