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    Matching Finite Element Models to Modal Data

    Source: Journal of Vibration and Acoustics:;1990:;volume( 112 ):;issue: 001::page 84
    Author:
    C. Minas
    ,
    D. J. Inman
    DOI: 10.1115/1.2930103
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A technique is proposed which systematically adjusts a finite element model of a structure to produce an updated model in agreement with measured modal results. The approach suggested here is to consider the desired perturbations in stiffness and damping matrices as gain matrices in a feedback control algorithm designed to perform eigenstructure assignment. The improved stiffness and damping matrices combined with the analytical mass matrix, more closely predict the modal test results. The technique is applicable to undamped, proportionally damped, as well as non-proportionally damped models. The proposed method assumes that the analytical mass, damping and stiffness matrices are known and that vibration test data is available in the form of natural frequencies, damping ratios, and mode shapes.
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      Matching Finite Element Models to Modal Data

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    contributor authorC. Minas
    contributor authorD. J. Inman
    date accessioned2017-05-08T23:34:20Z
    date available2017-05-08T23:34:20Z
    date copyrightJanuary, 1990
    date issued1990
    identifier issn1048-9002
    identifier otherJVACEK-28790#84_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/107881
    description abstractA technique is proposed which systematically adjusts a finite element model of a structure to produce an updated model in agreement with measured modal results. The approach suggested here is to consider the desired perturbations in stiffness and damping matrices as gain matrices in a feedback control algorithm designed to perform eigenstructure assignment. The improved stiffness and damping matrices combined with the analytical mass matrix, more closely predict the modal test results. The technique is applicable to undamped, proportionally damped, as well as non-proportionally damped models. The proposed method assumes that the analytical mass, damping and stiffness matrices are known and that vibration test data is available in the form of natural frequencies, damping ratios, and mode shapes.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleMatching Finite Element Models to Modal Data
    typeJournal Paper
    journal volume112
    journal issue1
    journal titleJournal of Vibration and Acoustics
    identifier doi10.1115/1.2930103
    journal fristpage84
    journal lastpage92
    identifier eissn1528-8927
    treeJournal of Vibration and Acoustics:;1990:;volume( 112 ):;issue: 001
    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
    yabeshDSpacePersian