比值对双叶压坝轴承性能的影响:微极润滑

IF 1.5 Q3 ENGINEERING, MECHANICAL Advances in Tribology Pub Date : 2015-02-25 DOI:10.1155/2015/182713

Sanyam Sharma, C. M. Krishna

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引用次数: 11

摘要

双叶压力坝轴承是高速旋转机械中常用的轴承。它们的使用被认为比普通圆柱轴承更稳定。这种轴承在上半部分有一个大坝，而下半部分有一个减压轨道。对双叶压力坝轴承在微极流体作用下的性能进行了评价。采用有限元法求解修正后的雷诺方程。通过求解修正雷诺方程得到了液膜压力。因此，所获得的压力用于找到该轴承的性能特性。研究了不同比例下的动态性能特性。为了分析的目的，三个比率被认为是1.6、2.0和2.4。给出了不同微极性参数的计算结果。结果表明:随着长径比()的减小，双叶压坝支座的稳定性增大;

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of Ratio on the Performance of Two-Lobe Pressure Dam Bearing: Micropolar Lubricated

Two-lobe pressure dam bearings are commonly used in high speed rotating machineries. Their use is considered more stable than plain cylindrical bearings. Such bearings have a dam in the upper half whereas the lower half is provided with a relief track. Performance of two-lobe pressure dam bearings under micropolar fluid is evaluated. Finite element method is used to solve the modified Reynolds equation. Fluid film pressures are obtained by solving modified Reynolds equation. Thus pressure obtained is used to find performance characteristics of this bearing. The dynamic performance characteristics are studied at various ratios. Three ratios are considered 1.6, 2.0, and 2.4 for the analysis purpose. Results obtained are presented for various micropolar parameters. Results show that stability of two-lobe pressure dam bearings increases with decrease in aspect ratio ().

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