Sound attenuation using duct silencers with micro-perforated panel absorbers

X. Yu, L. Cheng, Y. Tong, Jie Pan

    Research output: Chapter in Book/Conference paperConference paper

    2 Citations (Scopus)

    Abstract

    Micro-perforated panel (MPP) can be used as non-fibrous acoustic absorber which can provide broadband sound absorption performance. In this study, a sub-structuring methodology based on the Patch Transfer Function (PTF) approach to deal with duct silencers with MPP absorbers and internal partitions is proposed, and the sound attenuation performance of such silencers is investigated. Reactive silencers with only internal partitions are shown to exhibit strong resonant pattern, with each sub-divided chamber acting as acoustic resonators for strong sound reflection. On the other hand, hybrid silencers which combine the reactive effect of partitions and dissipative effect of MPP absorbers are studied. Simulation results show that MPP parameters such as hole diameters have strong influence on the silencing performance. Although the hole diameter of MPP is typically very small (less than 1mm), the reactive effect of MPP silencer is still obvious. The calculation accuracy of the proposed formulation is validated against finite element method (FEM) analysis.
    Original languageEnglish
    Title of host publicationProceedings of 43rd International Congress on Noise Control Engineering
    PublisherAustralian Acoustical Society
    Pages205
    Volume1
    ISBN (Print)9780909882037
    Publication statusPublished - 2014
    EventSound attenuation using duct silencers with micro-perforated panel absorbers - Melbourne
    Duration: 1 Jan 2014 → …

    Conference

    ConferenceSound attenuation using duct silencers with micro-perforated panel absorbers
    Period1/01/14 → …

    Fingerprint

    silencers
    ducts
    absorbers
    attenuation
    acoustics
    partitions
    sound transmission
    transfer functions
    finite element method
    chambers
    resonators
    methodology
    broadband
    formulations

    Cite this

    Yu, X., Cheng, L., Tong, Y., & Pan, J. (2014). Sound attenuation using duct silencers with micro-perforated panel absorbers. In Proceedings of 43rd International Congress on Noise Control Engineering (Vol. 1, pp. 205). Australian Acoustical Society.
    Yu, X. ; Cheng, L. ; Tong, Y. ; Pan, Jie. / Sound attenuation using duct silencers with micro-perforated panel absorbers. Proceedings of 43rd International Congress on Noise Control Engineering. Vol. 1 Australian Acoustical Society, 2014. pp. 205
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    title = "Sound attenuation using duct silencers with micro-perforated panel absorbers",
    abstract = "Micro-perforated panel (MPP) can be used as non-fibrous acoustic absorber which can provide broadband sound absorption performance. In this study, a sub-structuring methodology based on the Patch Transfer Function (PTF) approach to deal with duct silencers with MPP absorbers and internal partitions is proposed, and the sound attenuation performance of such silencers is investigated. Reactive silencers with only internal partitions are shown to exhibit strong resonant pattern, with each sub-divided chamber acting as acoustic resonators for strong sound reflection. On the other hand, hybrid silencers which combine the reactive effect of partitions and dissipative effect of MPP absorbers are studied. Simulation results show that MPP parameters such as hole diameters have strong influence on the silencing performance. Although the hole diameter of MPP is typically very small (less than 1mm), the reactive effect of MPP silencer is still obvious. The calculation accuracy of the proposed formulation is validated against finite element method (FEM) analysis.",
    author = "X. Yu and L. Cheng and Y. Tong and Jie Pan",
    year = "2014",
    language = "English",
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    volume = "1",
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    booktitle = "Proceedings of 43rd International Congress on Noise Control Engineering",
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    Yu, X, Cheng, L, Tong, Y & Pan, J 2014, Sound attenuation using duct silencers with micro-perforated panel absorbers. in Proceedings of 43rd International Congress on Noise Control Engineering. vol. 1, Australian Acoustical Society, pp. 205, Sound attenuation using duct silencers with micro-perforated panel absorbers, 1/01/14.

    Sound attenuation using duct silencers with micro-perforated panel absorbers. / Yu, X.; Cheng, L.; Tong, Y.; Pan, Jie.

    Proceedings of 43rd International Congress on Noise Control Engineering. Vol. 1 Australian Acoustical Society, 2014. p. 205.

    Research output: Chapter in Book/Conference paperConference paper

    TY - GEN

    T1 - Sound attenuation using duct silencers with micro-perforated panel absorbers

    AU - Yu, X.

    AU - Cheng, L.

    AU - Tong, Y.

    AU - Pan, Jie

    PY - 2014

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    N2 - Micro-perforated panel (MPP) can be used as non-fibrous acoustic absorber which can provide broadband sound absorption performance. In this study, a sub-structuring methodology based on the Patch Transfer Function (PTF) approach to deal with duct silencers with MPP absorbers and internal partitions is proposed, and the sound attenuation performance of such silencers is investigated. Reactive silencers with only internal partitions are shown to exhibit strong resonant pattern, with each sub-divided chamber acting as acoustic resonators for strong sound reflection. On the other hand, hybrid silencers which combine the reactive effect of partitions and dissipative effect of MPP absorbers are studied. Simulation results show that MPP parameters such as hole diameters have strong influence on the silencing performance. Although the hole diameter of MPP is typically very small (less than 1mm), the reactive effect of MPP silencer is still obvious. The calculation accuracy of the proposed formulation is validated against finite element method (FEM) analysis.

    AB - Micro-perforated panel (MPP) can be used as non-fibrous acoustic absorber which can provide broadband sound absorption performance. In this study, a sub-structuring methodology based on the Patch Transfer Function (PTF) approach to deal with duct silencers with MPP absorbers and internal partitions is proposed, and the sound attenuation performance of such silencers is investigated. Reactive silencers with only internal partitions are shown to exhibit strong resonant pattern, with each sub-divided chamber acting as acoustic resonators for strong sound reflection. On the other hand, hybrid silencers which combine the reactive effect of partitions and dissipative effect of MPP absorbers are studied. Simulation results show that MPP parameters such as hole diameters have strong influence on the silencing performance. Although the hole diameter of MPP is typically very small (less than 1mm), the reactive effect of MPP silencer is still obvious. The calculation accuracy of the proposed formulation is validated against finite element method (FEM) analysis.

    M3 - Conference paper

    SN - 9780909882037

    VL - 1

    SP - 205

    BT - Proceedings of 43rd International Congress on Noise Control Engineering

    PB - Australian Acoustical Society

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    Yu X, Cheng L, Tong Y, Pan J. Sound attenuation using duct silencers with micro-perforated panel absorbers. In Proceedings of 43rd International Congress on Noise Control Engineering. Vol. 1. Australian Acoustical Society. 2014. p. 205