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Article Dans Une Revue International Journal of Mechanical Sciences Année : 2022

Lightweight sound-absorbing metastructures with perforated fish-belly panels

Yabin Jin
Yilong Yang
Liangshu He
  • Fonction : Auteur
Yong Li
  • Fonction : Auteur
Yan Li
  • Fonction : Auteur

Résumé

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.
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Dates et versions

hal-03697672 , version 1 (17-06-2022)

Identifiants

Citer

Yabin Jin, Yilong Yang, Zhihui Wen, Liangshu He, Yu Cang, et al.. Lightweight sound-absorbing metastructures with perforated fish-belly panels. International Journal of Mechanical Sciences, 2022, 226, pp.107396. ⟨10.1016/j.ijmecsci.2022.107396⟩. ⟨hal-03697672⟩
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