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    Energy-Based Stochastic Estimation for Nonlinear Oscillators With Random Excitation

    Source: Journal of Applied Mechanics:;2000:;volume( 067 ):;issue: 004::page 763
    Author:
    J. B. Roberts
    ,
    M. Vasta
    DOI: 10.1115/1.1330546
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A physically based averaging procedure is applied to a general form of a nonlinear single-degree-of-freedom equation, with nonwhite random excitation, leading to a one-dimensional continuous Markov model for the energy envelope. It is demonstrated that, in combination with an energy-based technique for estimating the potential energy function, the Markov model can be used as the basis of a stochastic identification method for estimating the spectrum of the excitation, the static nonlinear restoring characteristic, and the nonlinear damping function, from measurements of the response alone. Moreover it is shown that, by combining results for two levels of stochastic excitation, it is possible to obtain good estimates of damping and stiffness parameters, both linear and nonlinear. [S0021-8936(00)02304-7]
    keyword(s): Spectra (Spectroscopy) , Damping , Random excitation , Stiffness , Equations of motion , Diffusion (Physics) AND Potential energy ,
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      Energy-Based Stochastic Estimation for Nonlinear Oscillators With Random Excitation

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    http://yetl.yabesh.ir/yetl1/handle/yetl/123210
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    contributor authorJ. B. Roberts
    contributor authorM. Vasta
    date accessioned2017-05-09T00:01:39Z
    date available2017-05-09T00:01:39Z
    date copyrightDecember, 2000
    date issued2000
    identifier issn0021-8936
    identifier otherJAMCAV-26501#763_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/123210
    description abstractA physically based averaging procedure is applied to a general form of a nonlinear single-degree-of-freedom equation, with nonwhite random excitation, leading to a one-dimensional continuous Markov model for the energy envelope. It is demonstrated that, in combination with an energy-based technique for estimating the potential energy function, the Markov model can be used as the basis of a stochastic identification method for estimating the spectrum of the excitation, the static nonlinear restoring characteristic, and the nonlinear damping function, from measurements of the response alone. Moreover it is shown that, by combining results for two levels of stochastic excitation, it is possible to obtain good estimates of damping and stiffness parameters, both linear and nonlinear. [S0021-8936(00)02304-7]
    publisherThe American Society of Mechanical Engineers (ASME)
    titleEnergy-Based Stochastic Estimation for Nonlinear Oscillators With Random Excitation
    typeJournal Paper
    journal volume67
    journal issue4
    journal titleJournal of Applied Mechanics
    identifier doi10.1115/1.1330546
    journal fristpage763
    journal lastpage771
    identifier eissn1528-9036
    keywordsSpectra (Spectroscopy)
    keywordsDamping
    keywordsRandom excitation
    keywordsStiffness
    keywordsEquations of motion
    keywordsDiffusion (Physics) AND Potential energy
    treeJournal of Applied Mechanics:;2000:;volume( 067 ):;issue: 004
    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