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research-article

A design of coverage area for textured surface of sliding journal bearing based on Genetic Algorithm

[+] Author and Article Information
Hui Zhang

Key Laboratory of Education Ministry for Modern Design and Rotor-bearing System, Xi'an Jiaotong University, Xi'an, China
zhanghui7@xjtu.edu.cn

Mahshid Hafezi

Key Laboratory of Education Ministry for Modern Design and Rotor-bearing System, Xi'an Jiaotong University, Xi'an, China
mahshid.hafezi68@gmail.com

Guangneng Dong

Key Laboratory of Education Ministry for Modern Design and Rotor-bearing System, Xi'an Jiaotong University, Xi'an, China
donggn@mail.xjtu.edu.cn

Yang Liu

Key Laboratory of Education Ministry for Modern Design and Rotor-bearing System, Xi'an Jiaotong University, Xi'an, China
769778933@qq.com

1Corresponding author.

ASME doi:10.1115/1.4039958 History: Received January 01, 2018; Revised April 09, 2018

Abstract

This paper aims to improve the tribological performance of journal bearings by optimizing the coverage area of circular micro-textures in divergent region of the sleeve. A numerical model is proposed to calculate the friction coefficient and bearing load of textured journal bearings. The surface of the sleeve is divided into rectangular squares. Textures that located at the center of rectangular grids are assumed to be present or absent, marked as 1 and 0, respectively. Afterwards, different texture coverage area arrangements are evolved and selected based on the Genetic Algorithm. The area of semi-elliptical shape is obtained as the novel and preferable textured coverage area design for journal bearings. Influences of width and eccentricity ratio are discussed, which confirm the semi-major and semi-minor axes of the semi-elliptical shape of texture coverage area equal to one-third of the circumferential length and half of the width of the journal bearing, respectively.

Copyright (c) 2018 by ASME
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