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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 computational estimation of the critical rotational speed for finite hydrodynamically lubricated journal bearings
有限水动力润滑滚柱轴承临界旋转速度的计算估计
作 者: C. N. Pandazaras
G. P. Petropoulos
关键词: Bearing  [轴承]
Friction  [ 摩擦]
measurement  [ 测量]
出版年: 2001
期刊名: Industrial Lubrication & Tribology.
工业润滑与摩擦学。
年卷期: 2001, vol.53, no.4
摘 要: Presents theoretical results regarding the computational estimation of the critical rotational speed in smooth or of negligible roughness and waviness hydrodynamically lubricated journal bearings. Results were provided using a developed calculational simulation code adapted to modelling of hydrodynamic lubrication regime encountered in the operation of various conventional or unconventional configuration finite journal bearings (j-b). It is concluded that empirical formulae of general character used to determine j-b rotational speed critical domain may either considerably underestimate or overestimate operational magnitudes. This fact leads to the necessity of use of high values for rotational speed safety factors in order to assure liquid lubrication and to avoid j-b contacts during operation. Relevant diagrams resulting from the present investigation show a direct estimation of critical j-b operational magnitudes.

本文提出了关于在光滑或粗糙度和波纹可忽略的水动力润滑轴向推力轴承中,计算估计临界旋转速度的理论结果。研究采用开发的计算模拟代码,该代码适用于建模各种常规或非常规结构有限轴向推力轴承(j-b)运行过程中所遇到的水动力润滑工况。研究得出结论:目前用于确定j-b旋转速度临界范围的经验公式,可能严重低估或高估实际运行值。因此,必须采用较高的旋转速度安全系数,以确保液体润滑并避免运行过程中发生j-b接触。本研究所得的相关图表提供了对j-b临界运行参数的直接估算方法。
中文内容为网络AI翻译,专业术语未必准确,仅供参考。

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