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An Investigation of Modular Composable Acoustic Metamaterials with Multiple Nonunique Chambers.
Yang, Xiaocui; Shen, Xinmin; Hu, Daochun; Wang, Xiaoyong; Song, Haichao; Zhao, Rongxing; Zhang, Chunmei; Shen, Cheng; Yang, Mengna.
Afiliación
  • Yang X; Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
  • Shen X; MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
  • Hu D; Field Engineering College, Army Engineering University of PLA, Nanjing 210007, China.
  • Wang X; Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
  • Song H; Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
  • Zhao R; Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
  • Zhang C; Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
  • Shen C; Engineering Training Center, Nanjing Vocational University of Industry Technology, Nanjing 210023, China.
  • Yang M; MIIT Key Laboratory of Multifunctional Lightweight Materials and Structures (MLMS), Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Materials (Basel) ; 16(24)2023 Dec 13.
Article en En | MEDLINE | ID: mdl-38138768
ABSTRACT
To make the sound absorber easy to fabricate and convenient for practical application, a modular composable acoustic metamaterial with multiple nonunique chambers (MCAM-MNCs) was proposed and investigated, which was divided into a front panel with the same perforated apertures and a rear chamber with a nonunique grouped cavity. Through the acoustic finite element simulation, the parametric studies of the diameter of aperture d, depth of chamber T0, and thickness of panel t0 were conducted, which could tune the sound absorption performances of MCAM-MNCs-1 and MCAM-MNCs-2 for the expected noise reduction effect. The effective sound absorption band of MCAM-MNCs-1 was 556 Hz (773-1329 Hz), 456 Hz (646-1102 Hz), and 387 Hz (564-951 Hz) for T = 30 mm, T = 40 mm, and T = 50 mm, respectively, and the corresponding average sound absorption coefficient was 0.8696, 0.8854, and 0.8916, accordingly, which exhibited excellent noise attenuation performance. The sound absorption mechanism of MCAM-MNCs was investigated by the distributions of the total sound energy density (TSED). The components used to assemble the MCAM-MNCs sample were fabricated by additive manufacturing, and its actual sound absorption coefficients were tested according to the transfer matrix method, which demonstrated its feasibility and promoted its actual application.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza