Optimal design of an acoustic enclosure for minimal broadband sound radiation

Dongjai Lee, Gary H. Kooprnann, Ashok D. Belegundu

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    Reducing unwanted noise radiating from a vibrating structure continues to be a major challenge in engineering design. In this paper, high impedance structures characterized with uniquely identifiable resonance modes are considered for sound power reduction using an enclosing surface. An optimization strategy for the thin enclosure design is presented. A close-fitting and equipment-mounted enclosure is attached to the vibrating structure with translational springs. To model the coupled system, a new compact and symmetric system matrix analysis using component modal synthesis and fluid displacement potential to deal with the coupled system is developed. This leads to a new application of optimization to the coupled system to reduce the radiated sound power. Numerical optimizations are performed for a plate enclosure. It is shown that large reductions in radiated sound power are possible with optimally positioned and rated attachment springs.

    Original languageEnglish (US)
    Title of host publicationAmerican Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA
    Pages61-70
    Number of pages10
    Volume32 NCA
    DOIs
    StatePublished - 2005
    Event2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005 - Orlando, FL, United States
    Duration: Nov 5 2005Nov 11 2005

    Other

    Other2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005
    CountryUnited States
    CityOrlando, FL
    Period11/5/0511/11/05

    Fingerprint

    enclosure
    Enclosures
    Acoustics
    Acoustic waves
    broadband
    Radiation
    optimization
    acoustics
    radiation
    Acoustic noise
    attachment
    impedance
    engineering
    Fluids
    fluids
    synthesis
    Optimal design

    All Science Journal Classification (ASJC) codes

    • Mechanical Engineering
    • Acoustics and Ultrasonics

    Cite this

    Lee, D., Kooprnann, G. H., & Belegundu, A. D. (2005). Optimal design of an acoustic enclosure for minimal broadband sound radiation. In American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA (Vol. 32 NCA, pp. 61-70) https://doi.org/10.1115/IMECE2005-82943
    Lee, Dongjai ; Kooprnann, Gary H. ; Belegundu, Ashok D. / Optimal design of an acoustic enclosure for minimal broadband sound radiation. American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA. Vol. 32 NCA 2005. pp. 61-70
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    Lee, D, Kooprnann, GH & Belegundu, AD 2005, Optimal design of an acoustic enclosure for minimal broadband sound radiation. in American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA. vol. 32 NCA, pp. 61-70, 2005 ASME International Mechanical Engineering Congress and Exposition, IMECE 2005, Orlando, FL, United States, 11/5/05. https://doi.org/10.1115/IMECE2005-82943

    Optimal design of an acoustic enclosure for minimal broadband sound radiation. / Lee, Dongjai; Kooprnann, Gary H.; Belegundu, Ashok D.

    American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA. Vol. 32 NCA 2005. p. 61-70.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

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    Lee D, Kooprnann GH, Belegundu AD. Optimal design of an acoustic enclosure for minimal broadband sound radiation. In American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCA. Vol. 32 NCA. 2005. p. 61-70 https://doi.org/10.1115/IMECE2005-82943