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Proceedings Paper

Multi-dimensional thermomechanical model for pseudoelastic response of SMA
Author(s): B. Azadi; R. K. N. D. Rajapakse; D. M. Maijer
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Paper Abstract

A multi-dimensional thermomechanical model has been developed to simulate the localized phase transformation and propagation of transformation front(s) in SMA materials. The current model is an extension of the one-dimensional model previously developed by the authors which consists of a constitutive relation and a transformation evolution rule (kinetic relation). The constitutive relation is constructed based on continuum mechanics principles, and the kinetic of transformation is expressed in terms of various transformation surfaces in stress-temperature space. The model captures the localized deformations in both forward and reverse transformation. The finite element simulation of the forward and reverse transformations in a short NiTi strip under quasi-static extension is presented.

Paper Details

Date Published: 27 March 2006
PDF: 9 pages
Proc. SPIE 6166, Smart Structures and Materials 2006: Modeling, Signal Processing, and Control, 61660Y (27 March 2006); doi: 10.1117/12.658552
Show Author Affiliations
B. Azadi, The Univ. of British Columbia (Canada)
R. K. N. D. Rajapakse, The Univ. of British Columbia (Canada)
D. M. Maijer, The Univ. of British Columbia (Canada)


Published in SPIE Proceedings Vol. 6166:
Smart Structures and Materials 2006: Modeling, Signal Processing, and Control
Douglas K. Lindner, Editor(s)

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