国外文献 > 1.轴承 > 1. 基础理论与机制 > 摩擦与润滑
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| 标 题： |
A comparative thermal analysis of the static performance of different fixed profile bore plain bearings
不同固定轮廓轴向轴承静态性能的比较热分析 |
| 作 者： |
M. -T. Ma
C. M. Taylor |
| 关键词： |
Bearing performance prediction [轴承性能预测]
Plain hydrodynamic journal bearing [ 普通静压流体动力滑动轴承]
Steady load characteristics [ 稳定负载特性]
Temperature prediction [ 温度预测]
Lubrication [ 润滑]
Fixed profile bore [ 固定型轮廓孔] |
| 出版年： |
1999 |
| 期刊名： |
Proceedings of the Institution of Mechanical Engineers; Part J: Journal of Engineering Tribology
机械工程师学会会刊； 第J部分：工程摩擦学杂志 |
| 年卷期： |
1999, vol.213, no.J1 |
| 摘 要： |
Profile bore bearings are important components in high-speed rotating machinery. In order to provide bearing designers with some useful information on the performances of different bearing profiles, this paper presents a theoretical evaluation of five commonly used types of bearing through a comparison of their steady state performance characteristics. The bearings investigated were two-lobe circular, elliptical (lemon-bore), offset-half, three-lobe and four-lobe types. Their operating characteristics, including the minimum film thickness, maximum temperature, power loss and flowrate, have been calculated using a computerized detailed thermohydrodynamic model developed by the authors. The influences of the shaft speed, specific load, bearing pre-load ratio and lubricant viscosity index on the performance of the bearings have been investigated. In addition, the effect of oil groove angle and load orientation on a four-lobe bearing is briefly examined. Results show that, in general, the performance of the non-circular bearings is inferior to that of the circular bearing; of the non-circular types, the offset-half and elliptical bearings have better overall performances. Also, it is shown that reasonably increasing the angular size of an oil groove has a favourable effect on the static performance of a multi-lobe bearing.
轮廓轴承是高速旋转机械中的重要部件。为了向轴承设计人员提供有关不同轴承轮廓性能的有用信息，本文通过比较五种常用轴承的稳态性能特征，对其进行了理论评估。所研究的轴承包括双圆盘圆形、椭圆形（柠檬形）、偏心半圆、三圆盘和四圆盘类型。利用作者开发的计算机化详细热流体动力学模型，计算了这些轴承的运行特性，包括最小油膜厚度、最高温度、功率损耗和流量。文中还研究了轴转速、载荷、轴承预载比以及润滑剂粘度指数对轴承性能的影响。此外，简要分析了油沟角度和载荷方向对四圆盘轴承的影响。结果表明，总体而言，非圆形轴承的性能低于圆形轴承。在非圆形类型的轴承中，偏心半圆和椭圆轴承的整体性能更优。此外，研究表明合理增大油沟的角尺寸对多叶轴承的静力性能具有积极影响。 |
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