Effect of Micro-Texture Size on Friction and Wear Performance of Journal Bearing

WANG Lili; ZHANG Wei; ZHAO Xingtang; LIU Zengkai; HE Mengxue

doi:10.16078/j.tribology.2020185

TRIBOLOGY > 2021 > 41(5): 723-730. > DOI: 10.16078/j.tribology.2020185

WANG Lili, ZHANG Wei, ZHAO Xingtang, LIU Zengkai, HE Mengxue. Effect of Micro-Texture Size on Friction and Wear Performance of Journal Bearing[J]. TRIBOLOGY, 2021, 41(5): 723-730. DOI: 10.16078/j.tribology.2020185

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Effect of Micro-Texture Size on Friction and Wear Performance of Journal Bearing

College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Shandong Qingdao 266590, China

Funds: This project was supported by the grant from Shandong Provincial Postdoctoral Innovation Foundation (201701016) and Qingdao Postdoctoral Research funded project.

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Corresponding author:
WANG Lili, E-mail:wang-ly-ly@163.com, Tel: +86-532-86057559
Received Date: August 29, 2020
Revised Date: November 28, 2020
Accepted Date: December 06, 2020
Available Online: October 10, 2021
Published Date: September 27, 2021

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Abstract

Abstract

In order to study the effect of micro-texture size on the friction and wear characteristics of journal bearing, using the theoretical model of friction and wear of journal bearing and the method of friction experiments, the rule of friction and wear performance with different micro-texture sizes was analyzed. The results showed that with the increase of micro-texture size, the lubrication performance of the journal bearing increased firstly and then decreased in the theoretical model of friction and wear. The optimal lubrication performance occurred at the dimensionless radius of $\sqrt{2}$ . With the increase of micro-texture depth, the wear performance of the journal bearing decreased firstly and then increased. When the dimensionless depth was 0.03, the journal bearing had the best wear performance. When the micro-texture radius was $\sqrt{4}$ and $\sqrt{5}$ , the wear was low. In the friction experiment, the lubricating performance was the best as the micro-texture radius was 0.17mm, and the average friction coefficient was 7.1% lower than that for the micro-texture radius of 0.1mm. And the surface morphology wear was significantly smaller than other sizes pieces. Both theory and experiment proved that proper micro-texture size improved effectively the lubrication performance, reduced the friction coefficient and the wear of journal bearings.
- micro-texture,
- two-dimensional Reynolds equation,
- friction and wear performance,
- wear morphology,
- friction Test

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