Implementation of shape memory alloy dampers for passive control of structures subjected to seismic excitations

Different crystallographic phases of shape memory alloy (SMA) materials were used in a damper in order to produce an effective behavior device capable of dissipating energy, while containing the recentering capability. Different methodologies were applied in the four proposed damper systems in order...

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Bibliographic Details
Published in:Journal of constructional steel research 2007-12, Vol.63 (12), p.1570-1579
Main Authors: Motahari, S.A., Ghassemieh, M., Abolmaali, S.A.
Format: Article
Language:English
Subjects:
Damage index
Damper
Passive control
Seismic excitation
Shape memory alloy
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Summary:Different crystallographic phases of shape memory alloy (SMA) materials were used in a damper in order to produce an effective behavior device capable of dissipating energy, while containing the recentering capability. Different methodologies were applied in the four proposed damper systems in order to optimize their implementation into the earthquake resistant structural systems. To compare the structural system performance by using the different devices, the idea of damage indicator was utilized with certain modifications. The structural damage, non-structural damage, and the damage to the contents of different systems with the permanent deformations of the systems were considered at different ground acceleration histories. The comparisons were made with the buckling restrained steel bracing system. The effectiveness of the implementation of SMA dampers in reduction of the residual deformations on the structure is presented even after very high ground motions.
ISSN:0143-974X
1873-5983
DOI:10.1016/j.jcsr.2007.02.001