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Proceedings Paper

Experimental determination of shape memory alloy constitutive model parameters
Author(s): Peter R. Witting; Francis A. Cozzarelli
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Paper Abstract

Presented here are some modifications of a previously developed hysteretic model for shape memory alloys (SMAs) and other metallic hysteretic deforming materials, for use in vibrational analysis. This work begins by modifying an existing rate-independent SMA constitutive model to eliminate some undesirable features. The SMA model is also simplified by reducing the number of parameters without sacrificing physically significant SMA characteristics. To enhance the ease of evaluating the model parameters, a systematic method for determining these parameters is developed and illustrated by example. The results of uniaxial tests on a Nickel-Titanium SMA are presented in conjunction with the previously mentioned parameter determining examples. The model response to small amplitude alternating strain inputs is also explored in detail. The modified SMA constitutive model is then extended to a 3D form.

Paper Details

Date Published: 2 February 1995
PDF: 16 pages
Proc. SPIE 2427, Active Materials and Smart Structures, (2 February 1995); doi: 10.1117/12.200922
Show Author Affiliations
Peter R. Witting, Naval Surface Warfare Ctr. (United States)
Francis A. Cozzarelli, SUNY/Buffalo (United States)

Published in SPIE Proceedings Vol. 2427:
Active Materials and Smart Structures
Gary L. Anderson; Dimitris C. Lagoudas, Editor(s)

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