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Proceedings Paper

Cyclic behavior of superelastic shape memory alloy wire for innovative precast concrete frame connections
Author(s): Hui Qian; Hong-nan Li; Gang-bing Song; Huai Chen
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Paper Abstract

Smart precast concrete frame connection based on unbonded shape memory alloy (SMAPCFC) was proposed as a possible seismic resistance measure for reinforced concrete frame buildings. To investigate the restoring force characteristics of SMA wire, cyclic tensile tests on superelastic NiTi SMA wires with three diameters were carried out. The effects of the different loading conditions, namely: cyclic loading-unloading number, strain amplitude, loading frequency and ambient temperature, on the mechanical behavior described by some fundamental quantities, such as energy dissipation per cycle, secant stiffness, equivalent damping, residual strain, were examined. The temperature changes of the SMA wires due to the latent heat under different loading conditions were also discussed.

Paper Details

Date Published: 6 April 2009
PDF: 10 pages
Proc. SPIE 7288, Active and Passive Smart Structures and Integrated Systems 2009, 728819 (6 April 2009); doi: 10.1117/12.817560
Show Author Affiliations
Hui Qian, Zhengzhou Univ. (China)
Hong-nan Li, Dalian Univ. of Technology (China)
Gang-bing Song, Univ. of Houston (United States)
Huai Chen, Zhengzhou Univ. (China)

Published in SPIE Proceedings Vol. 7288:
Active and Passive Smart Structures and Integrated Systems 2009
Mehdi Ahmadian; Mehrdad N. Ghasemi-Nejhad, Editor(s)

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