Stopband effect and sound transmission loss of periodic locally resonant structures

• Autorzy: Juros Klara , Kras Aleksander , Kamisiński Tadeusz

Identyfikatory

DOI

10.21008/j.0860-6897.2021.1.05

• Języki publikacji: EN

Abstrakty

EN

This paper investigates the theoretical aspects of sound attenuation of periodic structures with locally resonant elements. The stopband effect in frequency characteristics of infinite periodic structures created by the resonant elements is investigated. The dispersion curves calculation procedure is described in details with the influence of resonance frequency and mass of added locally resonant structure on width of the obtained stopband is investigated. The theoretical formulation for calculation of the sound transmission loss for periodic structure is derived. The performance of the structure with locally resonant elements is evaluated based on dispersion curves obtained for an infinite periodic structure and transmission loss calculated for finite structure is conducted.

Słowa kluczowe

EN

acoustic metamaterials; periodic structures; locally resonant structures; stopband effect; dispersion curves; transmission loss

PL

metamateriały akustyczne; struktury periodyczne; struktury miejscowo rezonujące; efekt pasma zaporowego; krzywa dyspersji; izolacyjność akustyczna

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2021
• Tom: Vol. 32, nr 1
• Strony: art. no. 2021105
• Opis fizyczny: Bibliogr. 16 poz., wykr.

Twórcy

autor

Juros Klara

• Akademia Górniczo-Hutnicza w Krakowie, ul. A. Mickiewicza 30, 30-049 Kraków
• Silencions Sp. z o.o., ul. Bierutowska 57-59/Budynek 5, 51-317 Wrocław

autor

Kras Aleksander

• Silencions Sp. z o.o., ul. Bierutowska 57-59/Budynek 5, 51-317 Wrocław

autor

Kamisiński Tadeusz

• Akademia Górniczo-Hutnicza w Krakowie, ul. A. Mickiewicza 30, 30-049 Kraków

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).