Investigation of micro-vibration reduction method based on dynamic performance analysis of aerostatic bearing

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 : 2023-09-03 DOI:10.1177/13506501231198288

Yifei Li

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引用次数: 0

Abstract

The present work is dedicated to investigating both characteristics of the vortex-induced excitation and the displacement impedance and also weakening the micro-vibration for the aerostatic bearing with orifice type restrictor. Firstly, the numerical simulation is conducted to study the characteristics of the vortex flow in the frequency domain. Further, the displacement impedance is investigated based on an approximate model; the effects of bearing parameters on displacement impedance are also discussed. It is found that the vortex-induced excitation is the dynamic load acting on the floating device, while the displacement impedance reflects the capability of the bearing to withstand the dynamic load. Hence, it is necessary to enhance the displacement impedance for micro-vibration reduction in the bearing. Moreover, the design problem corresponding to the micro-vibration reduction is formulated, and the design optimization is carried out under several given bearing loads. Optimization results show that the micro-vibration can be reduced by increasing the displacement impedance and decreasing the Reynolds number in the flow field. The optimization process can provide an efficient way for reducing the micro-vibration in engineering application.

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基于空气静压轴承动态性能分析的微振动减振方法研究

本文主要研究了节流孔式静压轴承的涡激激励特性和位移阻抗特性，并对节流孔式静压轴承的微振动进行了研究。首先，对涡旋流动的频域特性进行了数值模拟研究。进一步，基于近似模型研究了位移阻抗;讨论了轴承参数对位移阻抗的影响。研究发现，涡激激励是作用在浮体上的动载荷，而位移阻抗则反映了浮体轴承承受动载荷的能力。因此，有必要提高轴承的位移阻抗，以减少轴承的微振动。在此基础上，提出了相应的微振动减振设计问题，并在给定的几种轴承载荷下进行了设计优化。优化结果表明，通过增大位移阻抗和减小流场雷诺数可以减小微振动。该优化过程可为工程应用中减小微振动提供有效途径。

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).