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    Design Optimization for Structural-Acoustic Problems Using FEA-BEA With Adjoint Variable Method

    Source: Journal of Mechanical Design:;2004:;volume( 126 ):;issue: 003::page 527
    Author:
    Jun Dong
    ,
    Graduate Research Assistant
    ,
    Nam H. Kim
    ,
    Kyung K. Choi
    ,
    Carver Professor
    DOI: 10.1115/1.1701879
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A noise-vibration-harshness (NVH) design optimization of a complex vehicle structure is presented using finite element and boundary element analyses. The steady-state dynamic behavior of the vehicle is calculated from the frequency response finite element analysis, while the sound pressure level within the acoustic cavity is calculated from the boundary element analysis. A reverse solution process is employed for the design sensitivity calculation using the adjoint variable method. The adjoint load is obtained from the acoustic boundary element re-analysis, while the adjoint solution is calculated from the structural dynamic re-analysis. The evaluation of pressure sensitivity only involves a numerical integration process over the structural part where the design variable is defined. A design optimization problem is formulated and solved, where the structural weight is reduced while the noise level in the passenger compartment is lowered.
    keyword(s): Acoustics , Design , Finite element analysis , Optimization AND Sound pressure ,
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      Design Optimization for Structural-Acoustic Problems Using FEA-BEA With Adjoint Variable Method

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/130529
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    • Journal of Mechanical Design

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    contributor authorJun Dong
    contributor authorGraduate Research Assistant
    contributor authorNam H. Kim
    contributor authorKyung K. Choi
    contributor authorCarver Professor
    date accessioned2017-05-09T00:13:54Z
    date available2017-05-09T00:13:54Z
    date copyrightMay, 2004
    date issued2004
    identifier issn1050-0472
    identifier otherJMDEDB-27786#527_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/130529
    description abstractA noise-vibration-harshness (NVH) design optimization of a complex vehicle structure is presented using finite element and boundary element analyses. The steady-state dynamic behavior of the vehicle is calculated from the frequency response finite element analysis, while the sound pressure level within the acoustic cavity is calculated from the boundary element analysis. A reverse solution process is employed for the design sensitivity calculation using the adjoint variable method. The adjoint load is obtained from the acoustic boundary element re-analysis, while the adjoint solution is calculated from the structural dynamic re-analysis. The evaluation of pressure sensitivity only involves a numerical integration process over the structural part where the design variable is defined. A design optimization problem is formulated and solved, where the structural weight is reduced while the noise level in the passenger compartment is lowered.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDesign Optimization for Structural-Acoustic Problems Using FEA-BEA With Adjoint Variable Method
    typeJournal Paper
    journal volume126
    journal issue3
    journal titleJournal of Mechanical Design
    identifier doi10.1115/1.1701879
    journal fristpage527
    journal lastpage533
    identifier eissn1528-9001
    keywordsAcoustics
    keywordsDesign
    keywordsFinite element analysis
    keywordsOptimization AND Sound pressure
    treeJournal of Mechanical Design:;2004:;volume( 126 ):;issue: 003
    contenttypeFulltext
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