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    Modelling a Structural-Acoustic Coupled System with an Equivalent Lumped Parameter Mechanical System

    Source: Journal of Vibration and Acoustics:;1999:;volume( 121 ):;issue: 004::page 453
    Author:
    S. M. Kim
    ,
    M. J. Brennan
    DOI: 10.1115/1.2894002
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: This paper describes the way in which a structural acoustic coupled system can be modelled using an equivalent lumped parameter mechanical model. The impedance-mobility approach is first used to model the system, and by relating the physical parameters to equivalent mass and stiffness, lumped parameter models can be derived provided that damping in the acoustic system is neglected in all modes, but the first (zero order) mode. A limitation of this approach, however, is that these simple mechanical models formulated in terms of the uncoupled structural and acoustic modes are only possible for either a single structural mode coupled to many acoustic modes, or a single acoustic mode coupled to many structural modes. These models facilitate physical insight into the dynamic behavior of a lightly-damped structural-acoustic system at frequencies close to the resonance frequencies of the coupled system.
    keyword(s): Acoustics , Modeling , Frequency , Stiffness , Resonance , Impedance (Electricity) , Damping AND Lumped parameter models ,
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      Modelling a Structural-Acoustic Coupled System with an Equivalent Lumped Parameter Mechanical System

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/123081
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    • Journal of Vibration and Acoustics

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    contributor authorS. M. Kim
    contributor authorM. J. Brennan
    date accessioned2017-05-09T00:01:22Z
    date available2017-05-09T00:01:22Z
    date copyrightOctober, 1999
    date issued1999
    identifier issn1048-9002
    identifier otherJVACEK-28849#453_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/123081
    description abstractThis paper describes the way in which a structural acoustic coupled system can be modelled using an equivalent lumped parameter mechanical model. The impedance-mobility approach is first used to model the system, and by relating the physical parameters to equivalent mass and stiffness, lumped parameter models can be derived provided that damping in the acoustic system is neglected in all modes, but the first (zero order) mode. A limitation of this approach, however, is that these simple mechanical models formulated in terms of the uncoupled structural and acoustic modes are only possible for either a single structural mode coupled to many acoustic modes, or a single acoustic mode coupled to many structural modes. These models facilitate physical insight into the dynamic behavior of a lightly-damped structural-acoustic system at frequencies close to the resonance frequencies of the coupled system.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleModelling a Structural-Acoustic Coupled System with an Equivalent Lumped Parameter Mechanical System
    typeJournal Paper
    journal volume121
    journal issue4
    journal titleJournal of Vibration and Acoustics
    identifier doi10.1115/1.2894002
    journal fristpage453
    journal lastpage459
    identifier eissn1528-8927
    keywordsAcoustics
    keywordsModeling
    keywordsFrequency
    keywordsStiffness
    keywordsResonance
    keywordsImpedance (Electricity)
    keywordsDamping AND Lumped parameter models
    treeJournal of Vibration and Acoustics:;1999:;volume( 121 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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