Base isolation system using shape memory alloy wires

Yoshitaka Yamashita; Arata Masuda; Akira Sone

doi:10.1117/12.539479

29 July 2004 Base isolation system using shape memory alloy wires

Yoshitaka Yamashita, Arata Masuda, Akira Sone

Proceedings Volume 5386, Smart Structures and Materials 2004: Damping and Isolation; (2004) https://doi.org/10.1117/12.539479
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

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.

Citation Download Citation

Yoshitaka Yamashita, Arata Masuda, and Akira Sone "Base isolation system using shape memory alloy wires", Proc. SPIE 5386, Smart Structures and Materials 2004: Damping and Isolation, (29 July 2004); https://doi.org/10.1117/12.539479

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