Research on Externally Pressurized Circular Thrust Gas-Lubricated Bearings

概要

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In externally pressurized gas-lubricated circurlar thrust bearings, the occurrence of depression in the pressure profile is observed under some working conditions. Following the previous paper on the theoretical investigation of pressure depression, this paper investigates theoretically the pressure distribution in externally pressurized circular thrust gas bearings with a circular recess by assuming the generation of a normal shock wave in the bearing recess. Good quantitative agreement is found between the analytical results and available experimental data except the case of small bearing clearance height or deep recess. In order to prevent the pressure depression just after the gas supply hole, it is effective to provide a round or tapered chamfer at the entrance edge of the hole to the bearing clearance or to make the recess tapered doubly. Through these alternations, the shape of pressure distribution becomes flatter so that the load capacity can increase remarkably.
一般社団法人日本機械学会の論文