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    Comparing the Performance of Optimally Tuned Dynamic Vibration Absorbers With Very Large or Very Small Moment of Inertia

    Source: Journal of Vibration and Acoustics:;2010:;volume( 132 ):;issue: 003::page 34501
    Author:
    S.-J. Jang
    ,
    M. J. Brennan
    ,
    E. Rustighi
    DOI: 10.1115/1.4000780
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: In this article, the performance of a two degree-of-freedom dynamic vibration absorber (DVA) with very large or very small moment of inertia is studied. Although it has been shown previously that an optimally tuned DVA with a negligibly small moment of inertia marginally outperforms the optimally tuned DVA with a very large moment of inertia, the physical reasons for this have not been made clear. Using a simplified model of the stiffness elements of the DVA, it is shown that the two sets of parallel combinations of stiffness and damping elements of the DVA with negligibly small moments of inertia effectively act in series, rather than in parallel as in the other case. Furthermore, it is shown that the stiffness and damping elements can be represented as a single stiffness and a single damping element whose properties are frequency dependent. This frequency dependency means that there is additional freedom in choosing the optimum stiffness and damping of the DVA, which results in better performance.
    keyword(s): Inertia (Mechanics) , Damping , Vibration absorbers AND Stiffness ,
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      Comparing the Performance of Optimally Tuned Dynamic Vibration Absorbers With Very Large or Very Small Moment of Inertia

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    http://yetl.yabesh.ir/yetl1/handle/yetl/145121
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    contributor authorS.-J. Jang
    contributor authorM. J. Brennan
    contributor authorE. Rustighi
    date accessioned2017-05-09T00:41:51Z
    date available2017-05-09T00:41:51Z
    date copyrightJune, 2010
    date issued2010
    identifier issn1048-9002
    identifier otherJVACEK-28907#034501_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/145121
    description abstractIn this article, the performance of a two degree-of-freedom dynamic vibration absorber (DVA) with very large or very small moment of inertia is studied. Although it has been shown previously that an optimally tuned DVA with a negligibly small moment of inertia marginally outperforms the optimally tuned DVA with a very large moment of inertia, the physical reasons for this have not been made clear. Using a simplified model of the stiffness elements of the DVA, it is shown that the two sets of parallel combinations of stiffness and damping elements of the DVA with negligibly small moments of inertia effectively act in series, rather than in parallel as in the other case. Furthermore, it is shown that the stiffness and damping elements can be represented as a single stiffness and a single damping element whose properties are frequency dependent. This frequency dependency means that there is additional freedom in choosing the optimum stiffness and damping of the DVA, which results in better performance.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleComparing the Performance of Optimally Tuned Dynamic Vibration Absorbers With Very Large or Very Small Moment of Inertia
    typeJournal Paper
    journal volume132
    journal issue3
    journal titleJournal of Vibration and Acoustics
    identifier doi10.1115/1.4000780
    journal fristpage34501
    identifier eissn1528-8927
    keywordsInertia (Mechanics)
    keywordsDamping
    keywordsVibration absorbers AND Stiffness
    treeJournal of Vibration and Acoustics:;2010:;volume( 132 ):;issue: 003
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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