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    Design Sensitivity Analysis of Structure-Induced Noise and Vibration

    Source: Journal of Vibration and Acoustics:;1997:;volume( 119 ):;issue: 002::page 173
    Author:
    K. K. Choi
    ,
    S. Wang
    ,
    I. Shim
    DOI: 10.1115/1.2889699
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A continuum design sensitivity analysis (DSA) method for dynamic frequency responses of structural-acoustic systems is developed using the adjoint variable and direct differentiation methods. A variational approach with a non-self-adjoint operator for complex variables is used to retain the continuum elasticity formulation throughout derivation of design sensitivity results. It is shown that the adjoint variable method is applicable to the variational equation with the non-self-adjoint operator. Sizing design variables such as the thickness and cross-sectional area of structural components are considered for the design sensitivity analysis. A numerical implementation method of continuum DSA results is developed by postprocessing analysis results from established finite element analysis (FEA) codes to obtain the design sensitivity of noise and vibration performance measures of the structural-acoustic systems. The numerical DSA method presented in this paper is limited to FEA and boundary element analysis (BEA) is not considered. A numerical method is developed to compute design sensitivity of direct and modal frequency FEA results. For the modal frequency FEA method, the numerical DSA method provides design sensitivity very efficiently without requiring design sensitivities of eigenvectors. The numerical method has been tested using passenger vehicle problems. Accurate design sensitivity results are obtained for analysis results obtained from established FEA codes.
    keyword(s): Noise (Sound) , Design sensitivity analysis , Vibration , Design , Finite element analysis , Numerical analysis , Acoustics , Elasticity , Boundary element methods , Vehicles , Eigenvalues , Equations , Frequency response AND Thickness ,
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      Design Sensitivity Analysis of Structure-Induced Noise and Vibration

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/119733
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    • Journal of Vibration and Acoustics

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    contributor authorK. K. Choi
    contributor authorS. Wang
    contributor authorI. Shim
    date accessioned2017-05-08T23:55:19Z
    date available2017-05-08T23:55:19Z
    date copyrightApril, 1997
    date issued1997
    identifier issn1048-9002
    identifier otherJVACEK-28837#173_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/119733
    description abstractA continuum design sensitivity analysis (DSA) method for dynamic frequency responses of structural-acoustic systems is developed using the adjoint variable and direct differentiation methods. A variational approach with a non-self-adjoint operator for complex variables is used to retain the continuum elasticity formulation throughout derivation of design sensitivity results. It is shown that the adjoint variable method is applicable to the variational equation with the non-self-adjoint operator. Sizing design variables such as the thickness and cross-sectional area of structural components are considered for the design sensitivity analysis. A numerical implementation method of continuum DSA results is developed by postprocessing analysis results from established finite element analysis (FEA) codes to obtain the design sensitivity of noise and vibration performance measures of the structural-acoustic systems. The numerical DSA method presented in this paper is limited to FEA and boundary element analysis (BEA) is not considered. A numerical method is developed to compute design sensitivity of direct and modal frequency FEA results. For the modal frequency FEA method, the numerical DSA method provides design sensitivity very efficiently without requiring design sensitivities of eigenvectors. The numerical method has been tested using passenger vehicle problems. Accurate design sensitivity results are obtained for analysis results obtained from established FEA codes.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleDesign Sensitivity Analysis of Structure-Induced Noise and Vibration
    typeJournal Paper
    journal volume119
    journal issue2
    journal titleJournal of Vibration and Acoustics
    identifier doi10.1115/1.2889699
    journal fristpage173
    journal lastpage179
    identifier eissn1528-8927
    keywordsNoise (Sound)
    keywordsDesign sensitivity analysis
    keywordsVibration
    keywordsDesign
    keywordsFinite element analysis
    keywordsNumerical analysis
    keywordsAcoustics
    keywordsElasticity
    keywordsBoundary element methods
    keywordsVehicles
    keywordsEigenvalues
    keywordsEquations
    keywordsFrequency response AND Thickness
    treeJournal of Vibration and Acoustics:;1997:;volume( 119 ):;issue: 002
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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