Effects of turbulence and bush wear on the transient tribo-dynamic characteristics of water-lubricated bearings

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 : 2024-02-25 DOI:10.1177/13506501241233353

Ziqi Chen, Ji Wang, Rui Li, Yujun Liu, Pengfa Yu

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Abstract

This research proposes a transient mixed elastohydrodynamic model considering turbulence and bush wear, as well as the concept of contact work, to study the transient tribo-dynamic characteristics of water-lubricated bearings. The effects of turbulence, wear depth, and wear deviation angle on transient tribo-dynamic characteristics of water-lubricated bearings are investigated. The findings show that turbulence significantly affects the dynamics of stable conditions and enhances the hydrodynamic effect, but little affects the frictional contact behavior. An appropriate wear depth favors improving the tribo-dynamic characteristics of the water-lubricated bearings, but it deteriorates as the wear depth continuously increases. Negative deviation angles are better for minimizing contact work and enhancing rotor stability. The lubrication and dynamic properties of water-lubricated bearings can be enhanced through a rational approach to wear morphology design. This research is important for the optimal design and diagnosis of water-lubricated bearings wear failures.

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湍流和轴瓦磨损对水润滑轴承瞬态三动力特性的影响

本研究提出了一种考虑了湍流和轴瓦磨损以及接触功概念的瞬态混合弹流动力学模型，用于研究水润滑轴承的瞬态摩擦动力学特性。研究了湍流、磨损深度和磨损偏角对水润滑轴承瞬态摩擦动力学特性的影响。研究结果表明，湍流对稳定工况下的动态影响很大，并增强了流体动力学效应，但对摩擦接触行为影响很小。适当的磨损深度有利于改善水润滑轴承的摩擦动力特性，但随着磨损深度的不断增加，摩擦动力特性会恶化。负偏角更有利于减少接触功和提高转子稳定性。通过合理的磨损形态设计可以提高水润滑轴承的润滑和动力特性。这项研究对于水润滑轴承磨损故障的优化设计和诊断非常重要。

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

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).

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