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Proceedings Paper

Base isolation system using shape memory alloy wires
Author(s): Yoshitaka Yamashita; Arata Masuda; Akira Sone
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Paper Abstract

Pseudoelastic shape memory alloys (SMAs) have origin-oriented restoring forces under a tensile-compressive loading/ unloading and their restoring forces have the characteristic that they don't keep increasing as deformation increases and converge to a certain value. Using this characteristic, it is enable to restrain the transmission of force, i.e. acceleration, from the source of vibration. In this paper, we use SMA wires as softening springs and develop a base isolation system using them. The springs don't lose the origin-oriented characteristics and show good performance of softening springs. The base isolation effect of the system using SMA wires is investigated experimentally and we find that it is efficient to restrain acceleration transmission. Equivalent linear analysis is also carried out and the results correspond to experiment results. Furthermore, its durability is examined.

Paper Details

Date Published: 29 July 2004
PDF: 10 pages
Proc. SPIE 5386, Smart Structures and Materials 2004: Damping and Isolation, (29 July 2004); doi: 10.1117/12.539479
Show Author Affiliations
Yoshitaka Yamashita, Kyoto Institute of Technology (Japan)
Arata Masuda, Kyoto Institute of Technology (Japan)
Akira Sone, Kyoto Institute of Technology (Japan)


Published in SPIE Proceedings Vol. 5386:
Smart Structures and Materials 2004: Damping and Isolation
Kon-Well Wang, Editor(s)

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