• self-centering capability of shape memory alloy (sma)- based superelasticity-assisted slider (sss)

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1394/02/01
    • تاریخ انتشار در تی پی بین: 1394/02/01
    • تعداد بازدید: 593
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the self-centering capability, emphasized in design codes as a fundamental feature of aseismic isolation systems, is investigated for the shape memory alloy (sma)-based superelasticity-assisted slider (sss). restoring force in sss is associated with austenitic sma wires in order to properly re-center flat sliders. energy considerations are examined first as an insight into the problem, revealing also the governing parameters. the self-centering capability is then investigated through an extensive parametric study of the isolated structures idealized as single-degree-of-freedom systems subjected to a large group of recorded earthquakes. according to the results obtained from extensive nonlinear time-history analyses,residual displacement after an earthquake and the cumulative build-up of displacements after a series of successive earthquakes depend on both structural properties and ground motion characteristics. sss exhibits an acceptable self-centering capability, satisfying code provisions.

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