Performance analysis of journal bearing having surface waviness operating under misaligned condition

IF 1.6 3区工程技术 Q3 ENGINEERING, MECHANICAL

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology Pub Date : 2023-06-07 DOI:10.1177/13506501231177485

Arun Bangotra, Sanjay Sharma, Reza Taufique, Deepak Byotra

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引用次数: 1

Abstract

In this present study, the effect of surface waviness on the performance of journal bearing operating in misaligned conditions has been investigated. The journal’s misaligned conditions in the present analysis are taken about the circumferential, the axial, and both axes. For computing the pressure of lubricant inside the bearing, the finite element method has been applied to solve the Reynolds equation and thus static parameters are obtained. The static parameters, that is, load carrying capacity and coefficient of friction are evaluated at different waviness variables and are compared with misaligned journal bearing without surface waviness. It is observed that misalignment considered in both axes has the most severe effect on static performance parameters as compared to misalignment only in the circumferential or axial axis. With the increase in circumferential waviness number up to n = 5, the load-carrying capacity increases, and the coefficient of friction decreases under high eccentricity ratios. Change in waviness amplitude also impacts the bearing performance. Axial waviness always deteriorates the bearing performance. Combined waviness increases the load carrying capacity and decreases the coefficient of friction when circumferential waviness number n = 5 and axial waviness number m = 2. The highest performance enhancement ratio is attained at an eccentricity ratio of 0.8 with a circumferential waviness number n of 5, axial waviness number m of 2, and dimensionless waviness amplitude δ * of 0.075.

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偏心条件下具有表面波纹的滑动轴承性能分析

本文研究了轴颈轴承在不对准工况下，表面波纹度对轴承性能的影响。本文分析了轴颈在周向、轴向和两轴上的不对中情况。为了计算轴承内润滑剂的压力，采用有限元法求解雷诺方程，得到了轴承的静态参数。在不同的波浪度变量下，对承载能力和摩擦系数等静态参数进行了评价，并与无表面波浪度的偏心轴颈轴承进行了比较。可以观察到，与仅在圆周轴或轴向轴上的偏差相比，在两个轴上考虑的偏差对静态性能参数的影响最为严重。随着周向波纹数的增加，直至n = 5，在高偏心比下，承载能力增大，摩擦系数减小。波纹幅值的变化也会影响轴承的性能。轴向波动总是使轴承性能恶化。当周向波度数n = 5、轴向波度数m = 2时，复合波度增加了承载能力，降低了摩擦系数。偏心比为0.8、周向波数n为5、轴向波数m为2、无量纲波幅δ *为0.075时，性能增强率最高。

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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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 工程技术-工程：机械

CiteScore

4.20

自引率

5.00%

发文量

110

审稿时长

6.1 months

期刊介绍： The Journal of Engineering Tribology publishes high-quality, peer-reviewed papers from academia and industry worldwide on the engineering science associated with tribology and its applications. "I am proud to say that I have been part of the tribology research community for almost 20 years. That community has always seemed to me to be highly active, progressive, and closely knit. The conferences are well attended and are characterised by a warmth and friendliness that transcends national boundaries. I see Part J as being an important part of that community, giving us an outlet to publish and promote our scholarly activities. I very much look forward to my term of office as editor of your Journal. I hope you will continue to submit papers, help out with reviewing, and most importantly to read and talk about the work you will find there." Professor Rob Dwyer-Joyce, Sheffield University, UK This journal is a member of the Committee on Publication Ethics (COPE).