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Influence of micro-scale velocity slip on the dynamic characteristics of aerostatic slider

Dongju Chen (Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, China)
Shuai Kong (Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, China)
Jingfang Liu (Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, China)
Jinwei Fan (Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 25 August 2020

Issue publication date: 1 February 2021

121

Abstract

Purpose

The purpose of this paper is to propose the pressure fluctuation to further evaluate and predict the dynamic and static characteristics of the aerostatic slider and improve the calculation accuracy of the aerostatic slider.

Design/methodology/approach

First-order velocity slip is introduced into the traditional gas-film fluid equation, and the numerical analysis method is used to solve the static performance of the aerostatic slider. The finite element analysis method is used to solve its dynamic characteristics.

Findings

It can be concluded from the simulation and experimental results that the model considering the velocity slip in the gas film flow is more accurate. The errors between the modal detection results and the vibration detection results (0.8%–5.8%) under speed slip are smaller than the traditional cases (23.7%–210%), which also verifies the correctness of the above conclusions.

Originality/value

In this paper, the method of simulation and experiment is used to prove that the first-order velocity slip model is more suitable to predict the dynamic response of the aerostatic slider than the condition without slip.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2020-0059/

Keywords

Acknowledgements

This research was funded by the National Natural Science Foundation of China Grant No. 51875005.

Conflicts of Interest: The authors declare no conflict of interest in preparing this article.

Citation

Chen, D., Kong, S., Liu, J. and Fan, J. (2021), "Influence of micro-scale velocity slip on the dynamic characteristics of aerostatic slider", Industrial Lubrication and Tribology, Vol. 73 No. 1, pp. 120-125. https://doi.org/10.1108/ILT-02-2020-0059

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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