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Effect of Inner Resonators on Acoustics of Rigid Porous Media
This paper deals with the acoustics of gas-saturated, rigid, porous medium consisting in damped Helmholtz resonators embedded in a porous matrix. The macroscopic description of this system is established through homogenization method. It is shown that the resonators brought a negative contribution in the effective stiffness of the gas. The atypical features of acoustic wave propagation are determined and the occurrence of a broad band gap and strongly dispersedwaves is discussed according to the characteristics of the porous matrix and of the resonators.
Effect of Inner Resonators on Acoustics of Rigid Porous Media
This paper deals with the acoustics of gas-saturated, rigid, porous medium consisting in damped Helmholtz resonators embedded in a porous matrix. The macroscopic description of this system is established through homogenization method. It is shown that the resonators brought a negative contribution in the effective stiffness of the gas. The atypical features of acoustic wave propagation are determined and the occurrence of a broad band gap and strongly dispersedwaves is discussed according to the characteristics of the porous matrix and of the resonators.
Effect of Inner Resonators on Acoustics of Rigid Porous Media
Boutin, C. (author)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 1973-1980
2013-06-18
Conference paper
Electronic Resource
English
IMPROVING ACOUSTICS WITH VOLUME CAVITY RESONATORS
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