An Investigation into the Optimal Dimple Geometry in a Single-Dimple Sliding Contact

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Abstract

This study analyzes the influence of nine distinct texture geometries on a convergent oil
film gap using a simulation model. The geometrical dimensions of the textures are characterized
by the texture area density, Stex.,A and the ratio of the textured-to-untextured area (Atex./A0). The
results show that different texture geometries optimize the tribological performance depending on
the value of Stex.,A. Rectangular textures with variable widths (85% of the texture length atex.) significantly
enhance lifting and the drag force across a broad range of Stex.,A. Furthermore, rectangular
textures with a constant width (85% of the global width b0) show the best improvement within
this study. The investigation also reveals that a small texture pitch angle, αtex, further enhances
tribological performance.
Original languageEnglish
Article number622
Number of pages16
JournalMachines : open access journal
Volume12.2024
Issue number9
DOIs
Publication statusPublished - 5 Sept 2024

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