Design and characteristic analysis of high speed spindle aerostatic circular double pad thrust bearings
| Autor: | Yan-Hsin Wang, 王彥欣 |
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| Rok vydání: | 2000 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 89 The purpose of this paper is to make an investigation on the circular aerostatic thrust bearing with grooves and with different diameters presented by describing numerical methods in which Reynolds’ equation is solved in finite element form and on the other way the resistance network method (R.N.M.) based on the concept of flow continuation is obtained. The theoretical model developed is capable of calculating the pressure distribution in the gas-lubricated film and the load-carrying capacity as a separating force. Beside, to analyze the behavior on double-pad thrust bearing with eight restrictors for the high-speed spindle, and to estimate the pressure distribution in considered thrust bearing, numerical calculations were presented by the R.N.M. based on the concept of flow continuation. The coincidence of results derived from the R.N.M. and the F.D.M. based on the Reynolds’ equation has been proved. Finally, the aerodynamic effect caused by the high rotating speed of the spindle will be taken into account. The characteristic of load capacity is influenced by the spindle weight and the bearing inclination. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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