A Multi-Layer Micro-Perforated Panel Structure Based on Curled Space for Broadband Sound Absorption at Low Frequencies

• Autorzy: Chu Jiaming , Liang Xiao , Yang Zhen , Liang Haofeng , Chen Tao , Su Liang , Zhou Zhuo

Identyfikatory

DOI

10.24425/aoa.2023.146813

• Języki publikacji: EN

Abstrakty

EN

In this paper, we propose a multi-layer micro-perforated panel structure based on a curled space for broadband sound absorption at low frequencies, which increases the number of perforated panel layers in a limited space using a curled space. The absorption coefficients of the structure under plane wave conditions were calculated using the transfer matrix method and the finite element method. It is demonstrated that the multilayer micro-perforated panel structure can ensure high absorption (consistently over 90%) in the frequency range of 400~5000 Hz. The sound absorption mechanism of the multi-layer micro-perforated panel structure is investigated by using the acoustic impedance along with the reflection coefficient of the complex frequency surface. In addition, we also discuss the effects of the micro-perforated panel parameters on the structural sound absorption coefficient. The results show that the proposed multi-layer micro-perforated panel structure provides an excellent solution for sound absorption in a limited space.

Słowa kluczowe

EN

micro-perforated plate; curled space; broadband sound absorption; complex frequency plane method

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2023
• Tom: Vol. 48, No. 4
• Strony: 529--538
• Opis fizyczny: Bibliogr. 30 poz., rys., wykr.

Twórcy

autor

Chu Jiaming

• School of Mechanical Engineering, Xiangtan University Xiangtan, China

autor

Liang Xiao

• School of Mechanical Engineering, Xiangtan University Xiangtan, China
• Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University Foshan, Guangdong, China

autor

Yang Zhen

• School of Mechanical Engineering, Xiangtan University Xiangtan, China

autor

Liang Haofeng

• School of Mechanical Engineering, Xiangtan University Xiangtan, China

autor

Chen Tao

• School of Mechanical Engineering, Xiangtan University Xiangtan, China

autor

Su Liang

• School of Mechanical Engineering, Xiangtan University Xiangtan, China

autor

Zhou Zhuo

• School of Mechanical Engineering and State Key Laboratory for Strength and Vibration of Mechanical Structures Xi’an Jiaotong University Xi’an, Shanxi, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).