Minimizing radiated sound power from vibrating shells

Eric W. Constans, A. D. Belegundu

    Research output: Contribution to conferencePaperpeer-review

    3 Scopus citations

    Abstract

    A general method of minimizing sound power radiation from vibrating thin shell structures is presented. The method employs finite element analysis for determining structural modes and vibrations, and also a boundary element/wave superposition code for determining sound power radiation. Noise control is accomplished passively by placing optimally sized point masses in locations which permit volume velocity cancellation. The simulated annealing technique is used to determine the magnitude and location of the point masses. Either single-mode or broad-band sound power minimization may be carried out. Two example problems are presented. It is shown that the proposed method agrees quite well with experimental results for a flat plate.

    Original languageEnglish (US)
    Pages1106-1115
    Number of pages10
    DOIs
    StatePublished - 1996
    Event6th AIAA/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 1996 - Bellevue, United States
    Duration: Sep 4 1996Sep 6 1996

    Other

    Other6th AIAA/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 1996
    Country/TerritoryUnited States
    CityBellevue
    Period9/4/969/6/96

    All Science Journal Classification (ASJC) codes

    • Aerospace Engineering
    • Mechanical Engineering

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