| タイトル | Steady-state and transient analysis of a squeeze film damper bearing for rotor stability |
| 本文（外部サイト） | http://hdl.handle.net/2060/19750014252 |
| 著者（英） | Barrett, L. E.; Gunter, E. J. |
| 著者所属（英） | Virginia Univ. |
| 発行日 | 1975-05-01 |
| 言語 | eng |
| 内容記述 | A study of the steady-state and transient response of the squeeze film damper bearing is presented. Both the steady-state and transient equations for the hydrodynamic bearing forces are derived. The bearing equivalent stiffness and damping coefficients are determined by steady-state equations. These coefficients are used to find the bearing configuration which will provide the optimum support characteristics based on a stability analysis of the rotor-bearing system. The transient analysis of rotor-bearing systems is performed by coupling the bearing and journal equations and integrating forward in time. The effects of unbalance, cavitation, and retainer springs are included in the analysis. Methods of determining the stability of a rotor-bearing system under the influence of aerodynamic forces and internal shaft friction are discussed with emphasis on solving the system characteristic frequency equation and on producing stability maps. It is shown that for optimum stability and low force transmissability the squeeze bearing should operate at an eccentricity ratio epsilon 0.4. |
| NASA分類 | AIRCRAFT PROPULSION AND POWER |
| レポートNO | 75N22324
NASA-CR-2548
ME-4040-114-73U |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/190220 |
