Influence of Design Parameters on Static Characteristics of Hydrostatic Closed-type Bearing Using Double-Action Restrictors

• Main Authors: Chia-Ming Hsu, 許家銘
• Other Authors: Yuan Kang
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/ze2sn6

碩士 === 中原大學 === 機械工程研究所 === 105 === This paper investigated the design methods and optimization of the hydrodynamic thrust bearings. The thrust bearings according to the shape of oil pads have two types, which are stepped-land and tapered-land. For numerical computation, substituting known conditions and design parameters into the characteristic equations can obtain the characteristic parameters of bearings, which are the film thickness height, friction power, temperature, flow etc. In this paper, we planned the characteristic parameters calculation and optimal characteristic parameters calculation to obtain the changes in characteristic parameters of bearing corresponding to the design parameters. And we compare the optimal results for the three types of oil pads in the same conditions. The tapered-land is the best, which has high film thickness height and low friction power. It can be seen that the throttle parameter ratio of the oil pad and the restrictor changes the shape and position of the curve, but does not affect the change of bearing stiffness. And when the throttle coefficient of the choke is greater than 10, there will be a large dimensionless net stiffness at the larger working load. On the other hand, if the throttle coefficient is less than 10, there will be a smaller working load large dimensionless net stiffness. The cylindrical sliders are suitable for large working loads, while thin film throttle is more suitable for small loads.