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    Broadband Sound Transmission Loss in a Corrugated Sound Panel Using Periodic Structure Theory

    Source: Journal of Vibration and Acoustics:;2022:;volume( 144 ):;issue: 006::page 61006
    Author:
    Prasad, Rajan;Baxy, Ajinkya;Banerjee, Arnab
    DOI: 10.1115/1.4055806
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The vibration and sound radiation characteristics of a double leaf panel wall with corrugated core are analyzed. The core comprises of repeating unit cells along the length of the panel. Each cell is a combination of a straight beam with uniform cross section and curved beams with varying cross section. The vibroacoustic property of the corrugated panel is analyzed assuming plain strain condition. The analysis presented in the work shows that the proposed sandwich panel design provides broadband sound transmission loss (STL) characteristics. The dispersion analysis, forced response characteristics, and sound radiation characteristics of the structure are presented. It is found that bending frequency band gap obtained from the dispersion analysis is a prominent criterion to achieve a higher STL. The structural and acoustic behaviors of the sandwich panel are analyzed through the spectral finite element model. The STL for the core element for various taper ratios is presented. It is found that a higher taper ratio shifts the STL characteristics to the low frequency range.
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      Broadband Sound Transmission Loss in a Corrugated Sound Panel Using Periodic Structure Theory

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4288970
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    contributor authorPrasad, Rajan;Baxy, Ajinkya;Banerjee, Arnab
    date accessioned2023-04-06T13:02:34Z
    date available2023-04-06T13:02:34Z
    date copyright10/17/2022 12:00:00 AM
    date issued2022
    identifier issn10489002
    identifier othervib_144_6_061006.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4288970
    description abstractThe vibration and sound radiation characteristics of a double leaf panel wall with corrugated core are analyzed. The core comprises of repeating unit cells along the length of the panel. Each cell is a combination of a straight beam with uniform cross section and curved beams with varying cross section. The vibroacoustic property of the corrugated panel is analyzed assuming plain strain condition. The analysis presented in the work shows that the proposed sandwich panel design provides broadband sound transmission loss (STL) characteristics. The dispersion analysis, forced response characteristics, and sound radiation characteristics of the structure are presented. It is found that bending frequency band gap obtained from the dispersion analysis is a prominent criterion to achieve a higher STL. The structural and acoustic behaviors of the sandwich panel are analyzed through the spectral finite element model. The STL for the core element for various taper ratios is presented. It is found that a higher taper ratio shifts the STL characteristics to the low frequency range.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleBroadband Sound Transmission Loss in a Corrugated Sound Panel Using Periodic Structure Theory
    typeJournal Paper
    journal volume144
    journal issue6
    journal titleJournal of Vibration and Acoustics
    identifier doi10.1115/1.4055806
    journal fristpage61006
    journal lastpage610068
    page8
    treeJournal of Vibration and Acoustics:;2022:;volume( 144 ):;issue: 006
    contenttypeFulltext
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