Stability analysis of partial journal bearings lubricated with micropolar fluid

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL

Industrial Lubrication and Tribology Pub Date : 2023-12-29 DOI:10.1108/ilt-06-2023-0167

Sanyam Sharma, Rajiv Verma

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引用次数: 0

Abstract

Purpose

This study aims to investigate the stability performance of partial journal bearings of 120° and 180° partial angles with micropolar lubricant.

Design/methodology/approach

To investigate the stability characteristics of partial journal bearing, a MATLAB source code is written. To solve the Reynolds’ equation, the finite element method is used. Stability performances of 120° and 180° partial journal bearings are computed for a wide range of non-dimensional micropolar fluid parameters and working eccentricities.

Findings

The presented results provide design data for stability parameters in terms of equivalent stiffness, whirl frequency ratio, critical mass and threshold speed of the rotor with respect to eccentricities and material size of the lubricant. The stability of 180° partial journal bearing is found to be higher than 120° partial journal bearing.

Originality/value

In open literature, it is rare to find the stability of a partial journal bearing lubricated with micropolar fluid. Very few researchers have studied the combined effect of eccentricities and micropolar lubricant parameters on the dynamic performance of such bearings. Hence, it is important to study the dynamic stability to explore the complete investigation of the performance of partial journal bearings with micropolar fluid.

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用微极性流体润滑的部分轴颈轴承的稳定性分析

设计/方法/途径为了研究局部轴颈轴承的稳定性能，我们编写了 MATLAB 源代码。采用有限元法求解雷诺方程。计算了 120° 和 180° 部分轴颈轴承在各种非尺寸微波流体参数和工作偏心率下的稳定性能。研究结果所提供的结果提供了与偏心率和润滑剂材料尺寸有关的转子等效刚度、旋速比、临界质量和临界转速等稳定性参数的设计数据。180° 部分轴颈轴承的稳定性高于 120° 部分轴颈轴承。很少有研究人员研究偏心率和微油润滑剂参数对此类轴承动态性能的综合影响。因此，研究动态稳定性对于全面调查使用微阳极流体的部分轴颈轴承的性能非常重要。

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

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.