In this paper, some guidelines are provided in order to predict at which frequency the 1st performance peak (related to periodicity effects: half of the wavelength = periodicity dimension) appears, together with its amplitude, as functions of the unit cell dimensions. Conversely, also the link between the unit cell dimensions and the 1st performance peak amplitude as functions of the design frequency is shown. Furthermore, some additional guidelines are provided in order to predict at which frequency the 1st performance peak appears, together with its amplitude, as functions of the foam airflow resistivity.

Design guidelines for the acoustic performance improvement of a periodic porous material

D. Magliacano
Primo
;
S. De Rosa;F. Franco;
2020

Abstract

In this paper, some guidelines are provided in order to predict at which frequency the 1st performance peak (related to periodicity effects: half of the wavelength = periodicity dimension) appears, together with its amplitude, as functions of the unit cell dimensions. Conversely, also the link between the unit cell dimensions and the 1st performance peak amplitude as functions of the design frequency is shown. Furthermore, some additional guidelines are provided in order to predict at which frequency the 1st performance peak appears, together with its amplitude, as functions of the foam airflow resistivity.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/820128
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