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Performance of a Magnetic Fluid-based Short Bearing

Keywords: short bearing , magnetic fluid , Reynolds’ equation , pressure , load carrying capacity

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An effort has been made to study and analyze the performance of a magnetic fluidbased infinitely short hydrodynamic slider bearing. The Reynolds’ equation is solved withappropriate boundary conditions. The expressions for various performance characteristicssuch as pressure, load carrying capacity and friction are obtained. Results are presentedgraphically. It is clearly seen that the load carrying capacity increases considerably due tothe magnetic fluid lubricant. Further, the film thickness ratio increases the load carryingcapacity. It is found that the load carrying capacity increases as the ratio of the length tooutlet film thickness increases while it decreases with respect to the increasing values of theratio of the width to the outlet film thickness. In addition, it is investigated that the magneticfluid lubricant unalters the friction. Lastly, this article makes it clear that the negativeeffect induced by the ratio of the width to the outlet film thickness can be neutralized up to aconsiderably large extent by the combined positive effect of the magnetization parameter,the film thickness ratio and the ratio of the length to outlet film thickness. This studyprovides ample scope for extending the life period of the bearing system.


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