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Proceedings Paper

Seismic response of base-isolated structures with shape memory alloy damping devices
Author(s): Krzystof Wilde; Paolo Gardoni; Yozo Fujino
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Paper 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.

Paper Details

Date Published: 23 May 1997
PDF: 12 pages
Proc. SPIE 3043, Smart Structures and Materials 1997: Smart Systems for Bridges, Structures, and Highways, (23 May 1997); doi: 10.1117/12.274648
Show Author Affiliations
Krzystof Wilde, Univ. of Tokyo (Japan)
Paolo Gardoni, Univ. of Tokyo (Japan)
Yozo Fujino, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 3043:
Smart Structures and Materials 1997: Smart Systems for Bridges, Structures, and Highways
Norris Stubbs, Editor(s)

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