Différences

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

--- public:modeles:rotor_74a2:accueil [2024/08/02 10:25] – [Fréquences propres] rafaelbarraud
+++ public:modeles:rotor_74a2:accueil [2024/08/02 10:27] (Version actuelle) – [Natural frequencies] rafaelbarraud
@@ Ligne 61: / Ligne 61: @@
 ^ aspect ratio          |  [-]     | 1.17     |
 ^ number of blades         |  [-]     | 32     |
-^ rotative speed  |  [rad/s]  | 1680 |
+^ nominal rotation speed $\omega_n$  |  [rad/s]  | 1680 |
 ==== Material properties  ====
@@ Ligne 105: / Ligne 105: @@
 | 2     |  1T    |  15222.59                             | 2422.75                 |
 | 3     |  2B    |  17870.82                             | 2844.23                 |
+====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_74a2:campbell_eng_74a2_ref.png?500 }}
+<caption>Campbell diagram computed with a linear centrifugal preload, with clamped root (nominal rotation speed ωₙ = 1 680 rad/s)</caption>
+  * {{ :public:modeles:rotor_74a2:campbell_eng_74a2_ref.pdf |graph (.pdf)}}
+  * {{ :public:modeles:rotor_74a2:campbell_74a2_ref.csv |Campbell data (.csv)}}
 ===== Initial blade =====
@@ Ligne 131: / Ligne 141: @@
 | 3     |  2B    |  17907.64                             | 2850.09                 |
+====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_74a2:campbell_eng_74a2_ini.png?500 }}
+<caption>Campbell diagram computed with a linear centrifugal preload, with clamped root (nominal speed ωₙ = 1 680 rad/s),
+initial blade (orange), reference blade (gray) </caption>
+  * {{ :public:modeles:rotor_74a2:campbell_eng_74a2_ini.pdf |graph (.pdf)}}
+  * {{ :public:modeles:rotor_74a2:campbell_74a2_ini.csv |Campbell data (.csv)}}