Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
public:modeles:rotor_25a:accueil [2024/07/29 10:23] – [Aerodynamic design] rafaelbarraud | public:modeles:rotor_25a:accueil [2024/08/06 17:09] (Version actuelle) – [Natural frequencies] rafaelbarraud | ||
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Ligne 95: | Ligne 95: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | + | | 1 |
- | | 2 | 1T | + | | 2 | 1T | 11065.51 |
- | | 3 | + | | 3 |
+ | ====Campbell diagram==== | ||
+ | Evolution of the natural frequencies of the first 3 vibration modes, as a function of rotation speed, for the mesh computed with OpenMCAD[(cite: | ||
+ | |||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
Ligne 110: | Ligne 118: | ||
==== Natural frequencies ==== | ==== Natural frequencies ==== | ||
- | First three natural frequencies (with clamped root) | + | First three natural frequencies (with clamped root), |
+ | |||
+ | * from the whole mesh : | ||
- | * from the whole mesh: | ||
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | + | | 1 |
- | | 2 | 1T | + | | 2 | 1T | 11105.09 |
- | | 3 | + | | 3 |
- | * from the reduced order model: | + | * from the reduced order model : |
^ Mode ^ Type ^ Natural angular frequency (rad/ | ^ Mode ^ Type ^ Natural angular frequency (rad/ | ||
- | | 1 | + | | 1 |
- | | 2 | 1T | + | | 2 | 1T | 11106.35 |
- | | 3 | + | | 3 |
+ | |||
+ | ====Campbell diagram==== | ||
+ | Comparison of the evolution of the natural frequencies of the first 3 vibration modes, as a function of rotation speed for the initial and the reference blade: | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | |||
+ | < | ||
+ | initial blade (orange), reference blade (gray) </ | ||
+ | * {{ : | ||
+ | * {{ : | ||
</ | </ | ||
Ligne 220: | Ligne 240: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 3228, | + | | 1 | 1F | 3228, |
| 2 | 1T | 11065, | | 2 | 1T | 11065, | ||
- | | 3 | 2F | 15059,6 | 2396, | + | | 3 | 2F | 15059,60 | 2396, |
====Diagramme de Campbell==== | ====Diagramme de Campbell==== | ||
Ligne 246: | Ligne 266: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 3238, | + | | 1 | 1F | 3238, |
| 2 | 1T | 11105, | | 2 | 1T | 11105, | ||
| 3 | 2F | 15106, | | 3 | 2F | 15106, | ||
Ligne 254: | Ligne 274: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | 3238, | + | | 1 | 1F | 3238, |
| 2 | 1T | 11106, | | 2 | 1T | 11106, | ||
| 3 | 2F | 15112, | | 3 | 2F | 15112, |