Theoretical Model and Experimental Study of an Efficient Resonance-Type Sound Absorber for the Middle Frequency Region

T. M. Tomilina; B. N. Bakhtin; K. M. Afanasev; Yu. I. Bobrovnitskii

doi:10.3103/S1062873818050301

Theoretical Model and Experimental Study of an Efficient Resonance-Type Sound Absorber for the Middle Frequency Region

Autores: Tomilina T.M.¹, Bakhtin B.N.¹, Afanasev K.M.¹^,2, Bobrovnitskii Y.I.¹
Afiliações:
1. Mechanical Engineering Research Institute
2. Samara State University
Edição: Volume 82, Nº 5 (2018)
Páginas: 542-544
Seção: Article
URL: https://journals.rcsi.science/1062-8738/article/view/185383
DOI: https://doi.org/10.3103/S1062873818050301
ID: 185383

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Resumo

A model of an efficient sound absorber with an internal structure consisting of several compact resonators with different parameters is considered. Maximum efficiency is achieved by matching the impedance characteristics of the sound absorber and the acoustic environment. Experimental results on determining the maximum absorption coefficient in the 100–1000 Hz frequency range for test samples made with 3D printing technology are reported.