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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 [2023/03/28 10:53] – solenekojtych | public:modeles:rotor_25a:accueil [2024/08/06 17:09] (Version actuelle) – [Natural frequencies] rafaelbarraud | ||
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Ligne 56: | Ligne 56: | ||
^ aspect ratio | [-] | 2 | | ^ aspect ratio | [-] | 2 | | ||
^ number of blades | ^ number of blades | ||
- | ^ rotative | + | ^ nominal rotation |
==== Material properties | ==== Material properties | ||
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 183: | Ligne 203: | ||
^ allongement | ^ allongement | ||
^ nombre d' | ^ nombre d' | ||
- | ^ vitesse de rotation | + | ^ vitesse de rotation |
==== Propriétés matériau | ==== Propriétés matériau | ||
Ligne 220: | Ligne 240: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | + | | 1 | 1F | 3228, |
- | | 2 | 1T | + | | 2 | 1T | 11065, |
- | | 3 | 2F | 2396,81 | + | | 3 | 2F | 15059,60 | 2396,81 | |
+ | ====Diagramme de Campbell==== | ||
+ | Évolution des fréquences propres des 3 premiers modes, en fonction de la vitesse de rotation, pour le maillage obtenu avec OpenMCAD[(cite: | ||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
+ | |||
+ | |||
+ | |||
===== Aube initiale ===== | ===== Aube initiale ===== | ||
Ligne 236: | Ligne 266: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | + | | 1 | 1F | 3238, |
- | | 2 | 1T | + | | 2 | 1T | 11105, |
- | | 3 | 2F | + | | 3 | 2F | 15106, |
Ligne 244: | Ligne 274: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | 1F | + | | 1 | 1F | 3238, |
- | | 2 | 1T | + | | 2 | 1T | 11106, |
- | | 3 | 2F | 2405, | + | | 3 | 2F |
+ | |||
+ | |||
+ | ====Diagramme de Campbell==== | ||
+ | Comparaison de l' | ||
+ | {{ : | ||
+ | < | ||
+ | aube initiale (orange), aube de référence (grise)</ | ||
+ | * {{ : | ||
+ | * {{ : | ||
</ | </ | ||
</ | </ |