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Guéraud, R.; Noël-Leroux, J.-P.; Livolant, M.; Michalopoulos, A.P.

doi:10.1016/0029-5493(85)90254-7

Cited by 1 publication

(1 citation statement)

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“…Linear springs and nonlinear helical springs with varying stiffness have been used as restoring mechanisms in conjunction with friction isolators. Alternatively, rigid perfectly plastic links, Electricite de France links, and rolling rods have been used as restoring mechanism. Isolators with multiple plane sliding surfaces have been developed, particularly for upgrading the seismic performance of multi‐span continuous bridges .…”

Section: Introductionmentioning

confidence: 99%

Thermally modulated shape memory alloy friction pendulum (tmSMA-FP) for substantial near-fault earthquake structure protection

Gur

Frantziskonis

Mishra

2017

Struct Control Health Monit

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Summary Vibration control of structures under near‐fault earthquakes by employing a friction pendulum supplemented with thermally modulated shape memory alloy (SMA) springs as damper system is studied. Temperature modulation of the SMA spring during the earthquake effectively alters its hysteretic energy dissipation capacity and thereby the control efficiency of the isolation system. The response of a structure with the isolation system is evaluated through nonlinear dynamic time‐history analysis under a set of recorded near‐fault ground motions. Through temperature modulation that effectively yields a large SMA hysteretic energy dissipation, the hybrid friction pendulum system with SMA temperature modulation shows enormous control efficiency. A parametric study reveals that under a wide range of conditions, the thermally modulated SMA friction pendulum isolation system shows improved control efficiency over conventional friction pendulum and SMA friction pendulum isolation systems. Further, the temperature‐tuned SMA hysteresis loops substantially suppress the high frequency components of earthquake motions, thus reducing the possibility of damage to the structure.

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