考虑轴颈倾斜的可倾瓦气体动压轴承静动态特性
Static and Dynamic Characteristics of Tilting Pad Hydrodynamic Gas Bearings Considering Journal Misalignment
牛光辉 1石明辉 1郭红 1张国龙1
作者信息
- 1. 郑州大学 机械与动力工程学院,郑州 450001
- 折叠
摘要
针对制造装配误差及受载变形造成轴颈倾斜的问题,以可倾瓦气体动压轴承为研究对象,建立计入轴颈倾斜、瓦块摆动自由度的静动态特性分析模型,研究轴颈倾斜对定载荷下轴承偏心率、摩擦系数、量纲一的质量流量以及刚度系数、阻尼系数的影响规律,结果表明:轴颈倾斜造成气膜压力峰值向轴承一端偏移,且轴颈倾斜角越大,改变越明显;轴颈倾斜方向角的改变会造成轴承性能呈波动的变化规律.
Abstract
In view of the problem of journal misalignment caused by manufacturing assembly errors and deformation under load,taking tilting pad hydrodynamic gas bearings as research objects,a static and dynamic characteristic analysis model considering journal misalignment and swing degree of freedom of pads is established to study the influence of journal misalignment on eccentricity,friction coefficient,dimensionless mass flow,stiffness coefficient and damping coefficient of the bearings under constant load.The results show that the shaft misalignment causes peak pressure of gas film to shift towards one end of the bearings,and the larger the journal misalignment angle,the more obvious the change;the change in journal misalignment direction angle will cause fluctuations in performance of the bearings.
关键词
滑动轴承/气体动压轴承/轴颈/倾斜角/偏心率/摩擦系数/动态性能Key words
plain bearing/hydrodynamic gas bearing/journal/misalignment angle/eccentricity/friction coefficient/dynamic property引用本文复制引用
出版年
2025
NETL
NSTL
万方数据