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    Dimensional Response Analysis of Bilinear Systems Subjected to Non-pulselike Earthquake Ground Motions

    Source: Journal of Structural Engineering:;2011:;Volume ( 137 ):;issue: 005
    Author:
    Theodore L. Karavasilis
    ,
    Choung-Yeol Seo
    ,
    Nicos Makris
    DOI: 10.1061/(ASCE)ST.1943-541X.0000305
    Publisher: American Society of Civil Engineers
    Abstract: The maximum inelastic response of bilinear single-degree-of-freedom (SDOF) systems when subjected to ground motions without distinguishable pulses is revisited with dimensional analysis by identifying timescales and length scales in the time histories of recorded ground motions. The characteristic length scale is used to normalize the peak inelastic displacement of the bilinear system. The paper adopts the mean period of the Fourier transform of the ground motion as an appropriate timescale and examines two different length scales that result from the peak ground acceleration and the peak ground velocity. When the normalized peak inelastic displacement is presented as a function of the normalized strength and normalized yield displacement, the response becomes self-similar, and a clear pattern emerges. Accordingly, the paper proposes two alternative predictive master curves for the response that solely involve the strength and yield displacement of the bilinear SDOF system in association with either the peak ground acceleration or the peak ground velocity, together with the mean period of the Fourier transform of the ground motion. The regression coefficients that control the shape of the predictive master curves are based on 484 ground motions recorded at rock and stiff soil sites and are applicable to bilinear SDOF systems with a postyield stiffness ratio equal to 2% and an inherent viscous damping ratio equal to 5%.
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      Dimensional Response Analysis of Bilinear Systems Subjected to Non-pulselike Earthquake Ground Motions

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    http://yetl.yabesh.ir/yetl1/handle/yetl/68203
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    contributor authorTheodore L. Karavasilis
    contributor authorChoung-Yeol Seo
    contributor authorNicos Makris
    date accessioned2017-05-08T21:59:19Z
    date available2017-05-08T21:59:19Z
    date copyrightMay 2011
    date issued2011
    identifier other%28asce%29st%2E1943-541x%2E0000345.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/68203
    description abstractThe maximum inelastic response of bilinear single-degree-of-freedom (SDOF) systems when subjected to ground motions without distinguishable pulses is revisited with dimensional analysis by identifying timescales and length scales in the time histories of recorded ground motions. The characteristic length scale is used to normalize the peak inelastic displacement of the bilinear system. The paper adopts the mean period of the Fourier transform of the ground motion as an appropriate timescale and examines two different length scales that result from the peak ground acceleration and the peak ground velocity. When the normalized peak inelastic displacement is presented as a function of the normalized strength and normalized yield displacement, the response becomes self-similar, and a clear pattern emerges. Accordingly, the paper proposes two alternative predictive master curves for the response that solely involve the strength and yield displacement of the bilinear SDOF system in association with either the peak ground acceleration or the peak ground velocity, together with the mean period of the Fourier transform of the ground motion. The regression coefficients that control the shape of the predictive master curves are based on 484 ground motions recorded at rock and stiff soil sites and are applicable to bilinear SDOF systems with a postyield stiffness ratio equal to 2% and an inherent viscous damping ratio equal to 5%.
    publisherAmerican Society of Civil Engineers
    titleDimensional Response Analysis of Bilinear Systems Subjected to Non-pulselike Earthquake Ground Motions
    typeJournal Paper
    journal volume137
    journal issue5
    journal titleJournal of Structural Engineering
    identifier doi10.1061/(ASCE)ST.1943-541X.0000305
    treeJournal of Structural Engineering:;2011:;Volume ( 137 ):;issue: 005
    contenttypeFulltext
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