| タイトル | Singular asymptotic expansions in nonlinear rotordynamics |
| 著者（英） | Day, W. B. |
| 著者所属（英） | Auburn Univ. |
| 発行日 | 1985-01-01 |
| 言語 | eng |
| 内容記述 | During hot firing ground testing of the Space shuttle's Main Engine, vibrations of the liquid oxygen pump occur at frequencies which cannot be explained by the linear Jeffcott model of the rotor. The model becomes nonlinear after accounting for deadband, side forces, and rubbing. Two phenomena present in the numerical solutions of the differential equations are unexpected periodic orbits of the rotor and tracking of the nonlinear frequency. A multiple scale asymptotic expansion of the differential equations is used to give an analytic explanation of these characteristics. |
| NASA分類 | MECHANICAL ENGINEERING |
| レポートNO | 85N22218 |
| 権利 | No Copyright |
|
