23 May 1997 Seismic response of base-isolated structures with shape memory alloy damping devices
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Abstract
Base isolation provides a very effective passive method of protecting the structure from the hazards of earthquakes. The proposed smart isolation system combines the laminated rubber bearing with the device made of shape memory alloy (SMA). The constitutive law for superelastic materials is extended to describe a hardening of the stress-strain relation of SMA at large strain levels. The smart base isolation utilizes the different response of the SMA at different levels of strain to control the displacements of the rubber bearing at various excitation levels. At the same time the hysteresis of the alloy is used to increase the energy dissipation capacity. The performance of the smart base isolation is compared with the response of laminated rubber bearing with and without lead core to quantified the benefits of applying SMA for isolation of three story building.
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Krzystof Wilde, Paolo Gardoni, Yozo Fujino, "Seismic response of base-isolated structures with shape memory alloy damping devices", Proc. SPIE 3043, Smart Structures and Materials 1997: Smart Systems for Bridges, Structures, and Highways, (23 May 1997); doi: 10.1117/12.274648; https://doi.org/10.1117/12.274648
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