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

Research output: Contribution to journalArticleResearchpeer-review

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.

Details

Original languageEnglish
Article number622
Number of pages16
JournalMachines : open access journal
Volume12.2024
Issue number9
DOIs
Publication statusPublished - 5 Sept 2024