@ARTICLE{10.3389/fbuil.2018.00046, AUTHOR={Charalampakis, Aristotelis E. and Tsiatas, George C.}, TITLE={A Simple Rate-Independent Uniaxial Shape Memory Alloy (SMA) Model}, JOURNAL={Frontiers in Built Environment}, VOLUME={4}, PAGES={46}, YEAR={2018}, URL={https://www.frontiersin.org/article/10.3389/fbuil.2018.00046}, DOI={10.3389/fbuil.2018.00046}, ISSN={2297-3362}, ABSTRACT={In this paper, three specific uniaxial phenomenological models commonly used for the description of a Shape Memory Alloy (SMA) behavior are examined in detail. In particular, the models examined are the Graesser-Cozzarelli model, the Wilde-Gardoni-Fujino model, and the Zhang-Zhu model. The pertinent model parameters are examined with respect to their physical representation, if any. Based on this analysis, a new simple rate-independent model is proposed which addresses all issues in a unified manner. Finally, powerful metaheuristics are employed for system identification, producing excellent fit with experimental data while revealing valuable information regarding the relative sensitivity of the proposed model parameters.} }