Macro-texture in hydrodynamic lubrication: Effects of dimple parameter, density and distribution

Surface texturing, a well-known method to increase tribo-pair tribological performance, is widely used and of great importance in industrial manufacturing. By designing reasonable surface texture on two contact surfaces, the load-carrying capacity, wear resistance, and coefficient of friction of the...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part C, Journal of mechanical engineering science Journal of mechanical engineering science, 2022-08, Vol.236 (15), p.8703-8713
Main Authors: Jiao, Bowen, Liu, Yuyang, Li, Tongyang, Lu, Xiqun, Ma, Xuan
Format: Article
Language:English
Subjects:
Algorithms
Aspect ratio
Bearing strength
Coefficient of friction
Cylinder liners
Density
Dimpling
Load carrying capacity
Lubrication
Parameters
Piston rings
Surface layers
Texture
Texturing
Tribology
Wear resistance
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Summary:Surface texturing, a well-known method to increase tribo-pair tribological performance, is widely used and of great importance in industrial manufacturing. By designing reasonable surface texture on two contact surfaces, the load-carrying capacity, wear resistance, and coefficient of friction of the tribo-pairs can be significantly improved. To investigate the influence of the macro-texture, millimeter magnitude, on the tribology performance, a large number of simulation cases were carried out in this work. And the influence of texture parameters including the ellipse aspect ratio, the depth-to-diameter ratio, density, and distribution on tribology performance was studied using the hydrodynamic lubrication model which was verified through a sample experiment of piston ring and cylinder liner tribo-pairs. In addition, a Taguchi algorithm was used to find the most suitable texture parameters. The results show that the influence of density on the coefficient of friction and load-carrying capacity is of significance and 20% density is sufficient for tribology performance. Dimple size and distribution had a more significant influence on tribology performance.
ISSN:0954-4062
2041-2983
DOI:10.1177/09544062221087552