Structured Assembly of Acoustic Materials for Mitigating Low-Frequency Broadband Aircraft Noise
Mots-clés :
Broadband, Low-frequency, Metamaterials, Aircraft NoiseRésumé
Le défi d’atténuer le bruit large bande en basses fréquences est crucial dans les secteurs de l’aéronautique, des transports terrestres et de la construction, nécessitant des solutions innovantes pour un contrôle acoustique amélioré. Cet article présente un nouveau concept de métamatériau acoustique mince visant à améliorer l'atténuation du bruit à large bande aux basses fréquences. Le concept comprend des métamatériaux structurés disposés en série et en parallèle incorporés dans une couche de fibre de verre, optimisant ainsi les fréquences de résonance pour créer une bande qui atténue au maximum le bruit aux basses fréquences. À l’aide des méthodes par éléments finis de COMSOL Multiphysics, les performances de ce métamatériau ont été évaluées, démontrant et confirmant la performance en atténuation du bruit à large bande aux basses fréquences.
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