Lightweight sound-absorbing metastructures ...
Type de document :
Compte-rendu et recension critique d'ouvrage
Titre :
Lightweight sound-absorbing metastructures with perforated fish-belly panels
Auteur(s) :
Jin, Yabin [Auteur]
Tongji University
Yang, Yilong [Auteur]
Wen, Zhihui [Auteur]
School of Aerospace Engineering and Applied Mechanics
He, Liangshu [Auteur]
Cang, Yu [Auteur]
Tongji University
Max Planck Institute for Polymer Research
Yang, Bin [Auteur]
European Southern Observatory [ESO]
Djafari-Rouhani, Bahram [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Physique - IEMN [PHYSIQUE - IEMN]
Li, Yong [Auteur]
Li, Yan [Auteur]
Hainan University
Tongji University
Yang, Yilong [Auteur]
Wen, Zhihui [Auteur]
School of Aerospace Engineering and Applied Mechanics
He, Liangshu [Auteur]
Cang, Yu [Auteur]
Tongji University
Max Planck Institute for Polymer Research
Yang, Bin [Auteur]
European Southern Observatory [ESO]
Djafari-Rouhani, Bahram [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Physique - IEMN [PHYSIQUE - IEMN]
Li, Yong [Auteur]
Li, Yan [Auteur]
Hainan University
Titre de la revue :
International Journal of Mechanical Sciences
Pagination :
107396
Éditeur :
Elsevier
Date de publication :
2022-07-15
ISSN :
0020-7403
Discipline(s) HAL :
Sciences de l'ingénieur [physics]
Résumé en anglais : [en]
We propose a perforated metastructure combining fish-belly panels and a corrugated sandwich structure for broadband sound absorption. The curved panels provide a new degree of freedom for sound absorption while the sandwich ...
Lire la suite >We propose a perforated metastructure combining fish-belly panels and a corrugated sandwich structure for broadband sound absorption. The curved panels provide a new degree of freedom for sound absorption while the sandwich structure ensures a very good mechanical strength. We develop an effective impedance theory to study the relationship between sound absorption performance and geometric factors. To achieve a broadband absorption, we further propose a second original metastructure based on a 4-units coupling mechanism and the optimal structure is designed with the help of reinforcement learning algorithm. Finally, we define and discuss a figure of merit that reveals a global evaluation of both the acoustical and mechanical performances. Our work provides a promising platform, namely lightweight multifunctional structures for noise and load-bearing control in various industries with large-scale and inexpensive commercial manufacture technologies.Lire moins >
Lire la suite >We propose a perforated metastructure combining fish-belly panels and a corrugated sandwich structure for broadband sound absorption. The curved panels provide a new degree of freedom for sound absorption while the sandwich structure ensures a very good mechanical strength. We develop an effective impedance theory to study the relationship between sound absorption performance and geometric factors. To achieve a broadband absorption, we further propose a second original metastructure based on a 4-units coupling mechanism and the optimal structure is designed with the help of reinforcement learning algorithm. Finally, we define and discuss a figure of merit that reveals a global evaluation of both the acoustical and mechanical performances. Our work provides a promising platform, namely lightweight multifunctional structures for noise and load-bearing control in various industries with large-scale and inexpensive commercial manufacture technologies.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Source :