Journal Press India^®

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Surface texture acts as reservoir and generating additional micro-hydrodynamic lift effect resulting improving tribological performance of bearing. The parametric analysis for influence of pentagonal surface texture on stationary surface of non-parallel slider bearing has been studied. In the isothermal condition, Navier-Stokes equation has been solved by finite volume method using ANSYS FLUENT. The bearing performance in terms of load carrying capacity, friction force and coefficient of fluid film friction have been calculated and normalized. Pentagonal texture with different area ratio has been modeled. Optimization of dimple parameters i.e. area ratio, height ratio, orientation and number of dimples in terms of hydrodynamic performance of bearing are investigated. It is observed that single dimple with right edge parallel to transverse axis having better performance. The load carrying capacity is increased with width and depth of texture up to a certain value after this vortex formation is occurred. Also the friction force is reduced with wider and deeper texture. This optimized dimple is offset toward left to transverse axis. Offset dimple shows best tribological performance of bearing.

Keywords

Slider Bearing; Pentagonal Texture; Optimization; Offset.

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