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    Vibration and Damping in Three-Bar Tensegrity Structure

    Source: Journal of Aerospace Engineering:;2001:;Volume ( 014 ):;issue: 003
    Author:
    Irving J. Oppenheim
    ,
    William O. Williams
    DOI: 10.1061/(ASCE)0893-1321(2001)14:3(85)
    Publisher: American Society of Civil Engineers
    Abstract: The most interesting examples of tensegrity structures are underconstrained and display an infinitesimal flex. In the direction of that flex the force-displacement relationship is highly nonlinear, resulting from geometric stiffening and influenced by the effect of prestress at equilibrium. A tensegrity structure would therefore display nonlinear vibrations when excited in the direction of the infinitesimal flex, the “frequency” decreasing with amplitude. Movement in the direction of the flex occurs with only infinitesimal change in member length, and therefore under conventional models of material damping in members the motion would not vanish as rapidly as it would for a conventional oscillator. We study one particular tensegrity geometry for which we present the force-displacement relationship in analytical form and then examine the nonlinear vibrations. We observe the role of damping and we discuss those implications for the design of tensegrity structures in space applications.
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      Vibration and Damping in Three-Bar Tensegrity Structure

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    http://yetl.yabesh.ir/yetl1/handle/yetl/44946
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    contributor authorIrving J. Oppenheim
    contributor authorWilliam O. Williams
    date accessioned2017-05-08T21:16:04Z
    date available2017-05-08T21:16:04Z
    date copyrightJuly 2001
    date issued2001
    identifier other%28asce%290893-1321%282001%2914%3A3%2885%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/44946
    description abstractThe most interesting examples of tensegrity structures are underconstrained and display an infinitesimal flex. In the direction of that flex the force-displacement relationship is highly nonlinear, resulting from geometric stiffening and influenced by the effect of prestress at equilibrium. A tensegrity structure would therefore display nonlinear vibrations when excited in the direction of the infinitesimal flex, the “frequency” decreasing with amplitude. Movement in the direction of the flex occurs with only infinitesimal change in member length, and therefore under conventional models of material damping in members the motion would not vanish as rapidly as it would for a conventional oscillator. We study one particular tensegrity geometry for which we present the force-displacement relationship in analytical form and then examine the nonlinear vibrations. We observe the role of damping and we discuss those implications for the design of tensegrity structures in space applications.
    publisherAmerican Society of Civil Engineers
    titleVibration and Damping in Three-Bar Tensegrity Structure
    typeJournal Paper
    journal volume14
    journal issue3
    journal titleJournal of Aerospace Engineering
    identifier doi10.1061/(ASCE)0893-1321(2001)14:3(85)
    treeJournal of Aerospace Engineering:;2001:;Volume ( 014 ):;issue: 003
    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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