Différences

Ci-dessous, les différences entre deux révisions de la page.

--- public:modeles:rotor_28b:accueil [2024/07/29 13:32] – [Fréquences propres] rafaelbarraud
+++ public:modeles:rotor_28b:accueil [2024/07/29 13:35] (Version actuelle) – [Natural frequencies] rafaelbarraud
@@ Ligne 59: / Ligne 59: @@
 ^ aspect ratio          |  [-]     | 0.8     |
 ^ number of blades       |  [-]     | 45      |
-^ rotative speed  |  [rad/s]  | 960.28 |
+^ nominal rotation speed $\omega_n$  |  [rad/s]  | 960.28 |
 ==== Material properties  ====
@@ Ligne 102: / Ligne 102: @@
 | 3     | 2B    | 28121.40                      | 4475.66                  |
+====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:Kojtych_2022_gene_aubes)]:
+{{ :public:modeles:rotor_28b:campbell_eng_28b_ref.png?500 }}
+<caption>Campbell diagram computed with a linear centrifugal preload, with clamped root (nominal rotation speed ωₙ = 960.28  rad/s)</caption>
+  * {{ :public:modeles:rotor_28b:campbell_eng_28b_ref.pdf |graph (.pdf)}}
+  * {{ :public:modeles:rotor_28b:campbell_28b_ref.csv |Campbell data (.csv)}}
@@ Ligne 130: / Ligne 138: @@
 | 3     | 2B    | 28284.64                     | 4501.64                  |
+====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:
+{{ :public:modeles:rotor_28b:campbell_eng_28b_ini.png?500 }}
+<caption>Campbell diagram computed with a linear centrifugal preload, with clamped root (nominal speed ωₙ = 960,28 rad/s),
+initial blade (orange), reference blade (gray) </caption>
+  * {{ :public:modeles:rotor_28b:campbell_eng_28b_ini.pdf |graph (.pdf)}}
+  * {{ :public:modeles:rotor_28b:campbell_28b_ini.csv |Campbell data (.csv)}}