A Simple Rate-Independent Uniaxial Shape Memory Alloy (SMA) Model

Aristotelis E. Charalampakis, George C. Tsiatas
2018 Frontiers in Built Environment  
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
more » ... nner. 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.
doi:10.3389/fbuil.2018.00046 fatcat:r7ctppeqqbfffh4rjxs3s7yytm