The research on surface texture is developing from single macro-texture to composite micro-nano texture.The cur-rent research on the anti-friction mechanism and theoretical models of textures is relatively weak.Studying the char-acteristics of different types of surface textures and determining the applicable working conditions of each texture is the focus of current research.In this paper,a mathematical model of hydrodynamic lubrication is established based on Navier-Stokes equations.The FLUENT software is used to simulate and analyze the four texture models,explore the dynamic pressure lubrication characteristics of different texture types,and provide data support for texture optimization.The key variable values required by the mathematical model are obtained through the simulation data.The friction coefficient of the texture under different working conditions was measured through friction and wear experiments,and the mathematical model was verified by the experimental results.The research results show that circular texture is suitable for low to medium speed and high load conditions,chevron texture is suitable for medium to high speed and medium to high load conditions,groove texture is suitable for high speed and low load conditions,and composite texture is suitable for high speed and medium to high load conditions.Comparing the experimental results with the results obtained by the mathematical model,it is found that the two are basically the same in the ranking of the anti-friction performance of different textures,and there is an error of 10％-40％in the friction coeffi-cientvalue.In this study,a mathematical model of hydrodynamic lubrication was proposed,and the solution method of the optimal surface texture model was determined.

Dan Li;Xuefeng Yang;Yuanbo Wu;Jian Cheng;Shouren Wang;Zhuang Wan;Wenbo Liu;Guofeng Xia

College of Mechanical Engineering,University of Jinan,Jinan 250022,China;University of Science and Technology of China,Hefei,China;College of Mechanical Engineering,Hubei University of Technology,Hubei 430068,China

中国机械工程学报

[1]Dan Li;Xuefeng Yang;Yuanbo Wu;Jian Cheng;Shouren Wang;Zhuang Wan;Wenbo Liu;Guofeng Xia-.Theoretical Analysis and Experimental Research of Surface Texture Hydrodynamic Lubrication)[J].中国机械工程学报,2022(02):174-188

chevron,cientvalue

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