可倾瓦径向气体轴承的静动特性的理论研究  

Static and Dynamic Study on the Three-tilting-pad Gas Bearing

作　　者：王林忠[1] 侯予[1] 陈纯正[1] 

机构地区：[1]西安交通大学制冷及低温研究所,陕西西安710049

出　　处：《润滑与密封》2006年第5期84-87,共4页Lubrication Engineering

基　　金：国家教委博士点基金项目(20020698028);国家自然科学基金资助项目(50206015)

摘　　要：运用小扰动法和线性PH的思想,采用有限差分亚松弛的数值方法求解了可倾瓦径向动压气体轴承单块瓦的静、动特性方程。通过比较,得出一系列静特性参数和16个动特性参数,并讨论了影响静、动特性参数变化的因素。计算数据表明,轴承数和轴颈偏心率对轴承静态和动态特性的影响较大,并且瓦片参数取值推荐为L/D=1.0,α/β=0.65。Based on the small perturbation and linearizing PH methods, the equations of the static and dynamic characteristics of three-pad-tilting bearing were deduced, and the numerical results were obtained on the sub-relaxing finite difference method. Through comparison, the static characteristics parameters and sixteen dynamic parameters were obtained. The factors affecting changes of the static and dynamic parameters were discussed. According to the calculation, the effects of bearing number and eccentricity ratio on the static and dynamic parameters of rotor-bearing system are more evident. And the values of pad parameters are recommended to L/D = 1. 0 and α/β=0.65.

关 键 词：可倾瓦 气体轴承 静动特性 

分 类 号：TH133.3[机械工程—机械制造及自动化]