<p style="text-align: justify">There is a growing interest towards the textured bearings. The normal&nbsp;surface texture has&nbsp;the shape&nbsp;of micro-dimples of preselected&nbsp;diameter, area density and depth. The use of different amount of texturing and dimple area density, can be an effective way to improve bearing performance. In the present study, the performance parameters of the dimple textured journal bearing such as load carrying capacity, friction variable and flow coefficient are estimated for different texture portion and dimple area density. The computationally efficient Progressive mesh densification method is implemented for the numerical solution of the textured journal bearing. The governing Reynolds equation is discretized with the finite difference scheme and then solved using Gauss Seidel method coupled with Successive over relaxation scheme. The numerical results show that the load carrying capacity decreases and friction variable increases, at most of the eccentricity ratios, as the texture portion increases. When the dimple area density is varied from lower to higher value, the load carrying capacity decreases up to dimple area density of 0.25 then increases up to dimple area density of 0.30 and decreases again thereon, for most of the eccentricity ratios, whereas the friction variable shows the opposite trend of the load carrying capacity.&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</p>

Influence of Texture Portion and Dimple Area Density on the Tribological_x000B_Characteristics of Dimple Textured Hydrodynamic Journal Bearing

Paper Proceedings: https://asmedigitalcollection.asme.org/GTINDIA/GTINDIA2021/volume/85536

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