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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_67:accueil [2023/04/06 15:48] – [Tableau] solenekojtych | public:modeles:rotor_67:accueil [2025/02/14 09:26] (Version actuelle) – alainbatailly | ||
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Ligne 53: | Ligne 53: | ||
==== Aerodynamic design | ==== Aerodynamic design | ||
- | ^ ^ unit ^ values | + | ^ |
- | ^ pressure ratio | [-] | + | ^ pressure ratio | [-] | 1.63 | |
- | ^ mass flow | + | ^ mass flow |
- | ^ tip speed | + | ^ tip speed |
- | ^ tip solidity | + | ^ tip solidity |
- | ^ aspect ratio | [-] | + | ^ aspect ratio | [-] | 1.56 | |
- | ^ number of blades | + | ^ number of blades |
- | ^ rotative | + | ^ nominal rotation |
==== Material properties | ==== Material properties | ||
Ligne 66: | Ligne 66: | ||
The original material of the rotor 67 is not defined in the NASA report. A generic titanium Ti-6Al-4V is considered: | The original material of the rotor 67 is not defined in the NASA report. A generic titanium Ti-6Al-4V is considered: | ||
- | ^ | + | ^ ^ |
- | ^ alloy | [-] | Ti-6Al-4V | + | ^ alloy | [-] | Ti-6Al-4V |
- | ^ Young' | + | ^ Young' |
- | ^ density | + | ^ density |
- | ^ Poisson' | + | ^ Poisson' |
- | ^ yield stress | + | ^ yield stress |
Ligne 100: | Ligne 100: | ||
First three natural frequencies (with clamped root) for the mesh computed with OpenMCAD[(cite: | First three natural frequencies (with clamped root) for the mesh computed with OpenMCAD[(cite: | ||
- | ^ Mode ^ Type ^ Natural angular frequency (rad/ | + | ^ Mode ^ Type ^ Natural angular frequency (rad/ |
- | | 1 | 1B | | + | | 1 |
- | | 2 | 2B | | + | | 2 |
- | | 3 | 1T | | + | | 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: | ||
+ | |||
+ | {{ : | ||
+ | < | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
===== Initial blade ===== | ===== Initial blade ===== | ||
Ligne 119: | Ligne 127: | ||
* from the whole mesh: | * from the whole mesh: | ||
- | ^ Mode ^ Type ^ Natural angular frequency (rad/ | + | ^ Mode ^ Type ^ Natural angular frequency (rad/ |
- | | 1 | 1B | | + | | 1 |
- | | 2 | 2B | | + | | 2 |
- | | 3 | 1T | | + | | 3 |
* from the reduced order model: | * from the reduced order model: | ||
- | ^ Mode ^ Type ^ Natural angular frequency (rad/ | + | ^ Mode ^ Type ^ Natural angular frequency (rad/ |
- | | 1 | 1B | | + | | 1 |
- | | 2 | 2B | | + | | 2 |
- | | 3 | 1T | | + | | 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 194: | Ligne 214: | ||
^ allongement | ^ allongement | ||
^ nombre d' | ^ nombre d' | ||
- | ^ vitesse de rotation | + | ^ vitesse de rotation |
==== Propriétés matériau | ==== Propriétés matériau | ||
Ligne 232: | Ligne 252: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | + | | 1 |
- | | 2 | + | | 2 |
| 3 | | 3 | ||
+ | ====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 249: | Ligne 279: | ||
^ Mode ^ Type ^ Pulsation propre (rad/ | ^ Mode ^ Type ^ Pulsation propre (rad/ | ||
- | | 1 | + | | 1 |
- | | 2 | + | | 2 |
| 3 | | 3 | ||
Ligne 257: | Ligne 287: | ||
* pour le modèle réduit : | * pour le modèle réduit : | ||
- | ^ Mode ^ Type ^ Pulsation propre (rad/ | + | ^ Mode ^ Type ^ Pulsation propre (rad/ |
- | | 1 | + | | 1 |
- | | 2 | + | | 2 |
- | | 3 | 1T | | + | | 3 |
- | </ | + | ====Diagramme de Campbell==== |
- | </ | + | Comparaison de l' |
+ | {{ : | ||
+ | < | ||
+ | aube initiale (orange), aube de référence (grise)</ | ||
+ | |||
+ | * {{ : | ||
+ | * {{ : | ||
+ | |||
+ | </ | ||
+ | |||
+ | </ | ||
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- Dernière modification : 2023/04/06 15:48
- de solenekojtych