Study on curved surface design of sliding pair based on stepped topography model
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 10 September 2019
Issue publication date: 14 January 2020
Abstract
Purpose
The stepped topography of the friction pairs mainly causes the fluid film thickness to change in the direction of motion. In this region, there have very few topographical design methods for continuous or non-linear distribution of the fluid film. The purpose of this study is to analyze the effect of the curved surface on the performance of the liquid film.
Design/methodology/approach
First, a numerical simulation is used to solve the optimal bearing capacity and friction coefficient of the liquid film under the condition of the minimum film thickness. Then, the curved surface described by the sinusoidal curve equation is applied in the transitional region of maximum and minimum film thickness. The bearing capacity and the friction coefficient of the liquid film are respectively simulated and compared in the same condition of the minimum film thickness.
Findings
The research results show that the liquid film using the curved surface transition model, the optimal bearing capacity is significantly increased by 32 per cent while the optimal friction coefficient is clearly reduced by 38 per cent in comparison with using stepped surface model.
Originality/value
The friction pair with curved transition enables better lubrication performance of the liquid film and better adaptability under unstable conditions.
Keywords
Acknowledgements
The project was supported in part by the National Natural Science Foundation of China under Grants 51475338 and 51705377.
Citation
Wu, Z., Nguyen, V., Zhang, Z. and Zeng, L. (2020), "Study on curved surface design of sliding pair based on stepped topography model", Industrial Lubrication and Tribology, Vol. 72 No. 1, pp. 86-92. https://doi.org/10.1108/ILT-04-2019-0121
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited