An Investigation into the Optimal Dimple Geometry in a Single-Dimple Sliding Contact
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In: Machines : open access journal , Vol. 12.2024, No. 9, 622, 05.09.2024.
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TY - JOUR
T1 - An Investigation into the Optimal Dimple Geometry in a Single-Dimple Sliding Contact
AU - Scharf, Raphael
AU - Pusterhofer, Michael
AU - Gussmagg, Jakob
AU - Grün, Florian
PY - 2024/9/5
Y1 - 2024/9/5
N2 - 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.
AB - 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.
U2 - 10.3390/machines12090622
DO - 10.3390/machines12090622
M3 - Article
VL - 12.2024
JO - Machines : open access journal
JF - Machines : open access journal
SN - 2075-1702
IS - 9
M1 - 622
ER -
