Macro-texture in hydrodynamic lubrication: Effects of dimple parameter, density and distribution. (August 2022)

• Record Type: Journal Article
• Authors: Jiao, Bowen; Liu, Yuyang; Li, Tongyang; Lu, Xiqun; Ma, Xuan
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 236:Number 15(2022)
• Page Start: 8703
• Page End: 8713
• Publication Date: 2022-08
• Subjects: macro-texture -- coefficient of friction -- dimple parameter -- load-carrying capacity -- phyllotaxis distribution -- hydrodynamic lubrication; Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1177/09544062221087552
• Languages: English
• ISSNs: 0954-4062

Abstract

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.