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Friction 2020, 8(1): 83-94 https://doi.org/10.1007/s40544-018-0247-1
Research Article | Open Access | Issue | Published: 19 November 2018

Optimization of groove texture profile to improve hydrodynamic lubrication performance: Theory and experiments

Show Author's Information Wei WANG1,2,  Yongyong HE1( ),  Jun ZHAO1,  Junyuan MAO1,  Yutong HU1,  Jianbin LUO1
 State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
Intelligent & Connected Vehicle Testing Department, China Software Testing Center, Beijing 100048, China
Keywords:
hydrodynamic lubrication, groove texture, laser texturing, ultra-low coefficient of friction
Cite this article:
WANG W, HE Y, ZHAO J, et al. Optimization of groove texture profile to improve hydrodynamic lubrication performance: Theory and experiments. Friction, 2020, 8(1): 83-94. https://doi.org/10.1007/s40544-018-0247-1
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Abstract Full text About this article

It is well known that groove texture with a careful design can be used to enhance the load-carrying capacity of oil film under the conditions of hydrodynamic lubrication. In this study, a general parametric model was developed, and agenetic algorithm-sequential quadratic programming hybrid method was adopted to obtain the global-optimum profile of the groove texture. The optimized profiles at different rotating speeds are all chevrons. The numerical analysis results verified the effect of the optimization. In addition to the numerical optimization, experiments were conducted to validate the superiority of the optimized results.The experimental results show that the optimized groove texture can efficiently reduce the coefficient of friction (COF) and the temperature rise of the specimen. In particular, the optimized groove textures can achieve stable ultra-low COF values (COF < 0.01) under certain conditions.


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About this article

Optimization of groove texture profile to improve hydrodynamic lubrication performance: Theory and experiments

Show Author's information Wei WANG1,2, Yongyong HE1( ), Jun ZHAO1, Junyuan MAO1, Yutong HU1, Jianbin LUO1
 State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
Intelligent & Connected Vehicle Testing Department, China Software Testing Center, Beijing 100048, China

Abstract

It is well known that groove texture with a careful design can be used to enhance the load-carrying capacity of oil film under the conditions of hydrodynamic lubrication. In this study, a general parametric model was developed, and agenetic algorithm-sequential quadratic programming hybrid method was adopted to obtain the global-optimum profile of the groove texture. The optimized profiles at different rotating speeds are all chevrons. The numerical analysis results verified the effect of the optimization. In addition to the numerical optimization, experiments were conducted to validate the superiority of the optimized results.The experimental results show that the optimized groove texture can efficiently reduce the coefficient of friction (COF) and the temperature rise of the specimen. In particular, the optimized groove textures can achieve stable ultra-low COF values (COF < 0.01) under certain conditions.

Keywords: hydrodynamic lubrication, groove texture, laser texturing, ultra-low coefficient of friction

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Publication history

Received: 07 May 2018
Revised: 16 July 2018
Accepted: 17 September 2018
Published: 19 November 2018
Issue date: February 2020

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© The author(s) 2018

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This article is published with open access at Springerlink.com

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