Effect of percolation on hydrodynamic lubrication of rough bilayer porous bearing with circular contact
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Published:2019-08-30
Issue:1
Volume:72
Page:109-115
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ISSN:0036-8792
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Container-title:Industrial Lubrication and Tribology
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language:en
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Short-container-title:ILT
Author:
Zhang Guotao,Tong Baohong,Yang Shubao,Shi Liping,Yin Yanguo
Abstract
Purpose
The purpose of this paper was to study the hydrodynamic lubrication of rough bilayer porous bearing to reveal the effect of percolation.
Design/methodology/approach
The seepage lubrication model of the circular bilayer porous bearing was established in polar coordinates. The digital filtering technique and Darcy’s law were used to simulate the rough surface and the percolation characteristic of the oil bearing, respectively. The influence of the structural parameters on the lubrication performance was analyzed.
Findings
Compared with the ordinary monolayer oil bearing with high porosity, the bilayer bearing can reduce the whole porosity, prevent oil infiltrating into the porous medium and have better lubrication performance. The lubrication performance of bilayer oil bearing is better than that of the single-layer oil bearing which has a higher porosity. With increasing root-mean-square roughness or decreasing surface porosity, the lubrication performance of the bilayer bearing improves. The lower the porosity of the surface layer, the better the lubrication performance.
Originality/value
This research provides a theoretical basis for clarifying the lubrication mechanism and influence the mechanism of the bilayer oil bearing.
Subject
Surfaces, Coatings and Films,General Energy,Mechanical Engineering
Reference22 articles.
1. Effect of pressure dependent viscosity on couple stress squeeze film lubrication between porous circular stepped plates;Journal of Physics: Conference Series,2018
2. Simulation of 3-D random rough surface by 2-D digital filter and Fourier analysis;International Journal of Machine Tools and Manufacture,1992
3. Influence of roughness on porous finite journal bearing with heterogeneous slip/no-slip surface;Tribology International,2016
4. Modeling for optimization of circular flat pad aerostatic bearing with a single Central orifice-type restrictor based on CFD simulation;Tribology International,2017
5. Effects of fluid inertia in magneto-hydrodynamic annular squeeze films;Tribology International,2006
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