Adaptive Helmholtz resonator based on electroactive polymers : modeling, characterization, and control - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Smart Materials and Structures Année : 2018

Adaptive Helmholtz resonator based on electroactive polymers : modeling, characterization, and control

Résumé

This paper presents a new concept and strategy allowing adaptive control of a membraned Helmholtz resonator (HR) embedded in a melamine foam. The designed system aims to adapt the acoustic absorption performances and transmission loss in low frequencies (<500 Hz). The proposed concept consists in replacing the resonator front wall by an electroactive polymer (EAP) membrane. The stiffness of the membrane can be controlled by an electricfield, resulting in a resonance frequency shift. A 2D axisymmetric numerical model based on the finite elements method is developed to characterize the complex structure-acoustic coupling between the membrane, the HR and the host foam to determine the potential of the concept. Experimental measurements are then performed in an impedance tube and compared to numerical results. A feedforward algorithm based on neural networks allows the adaptivity of the membraned HR to the acoustic excitation variation inside the impedance tube.
Fichier principal
Vignette du fichier
f39d5c83-6573-431a-b573-ab68f73d1ed6-author.pdf (2.75 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02130041 , version 1 (15-05-2019)

Identifiants

  • HAL Id : hal-02130041 , version 1

Citer

Ahmed Abbad, Kanty Rabenorosoa, Morvan Ouisse, Noureddine Atalla. Adaptive Helmholtz resonator based on electroactive polymers : modeling, characterization, and control. Smart Materials and Structures, 2018, 27 (10), 14 p. ⟨hal-02130041⟩
28 Consultations
284 Téléchargements

Partager

Gmail Facebook X LinkedIn More