Constitutive Modeling of Phase Transformation and Plastic Yield in SMAs: Application to the S3T-RoundRobin

Department of Aerospace Engineering, Texas A&M University, College Station, TX, USA

Corresponding author: ^a e-mail: lagoudas@aero.tamu.edu

Abstract

In collaboration with other researchers contributing to the S3T-RoundRobin effort, this work presents analytical results as generated using the model of Hartl and Lagoudas (Hartl and Lagoudas, 2009; Hartl et al., 2009). The model, which is based on continuum thermodynamics and inspired by experimental findings, is briefly summarized. Its calibration to the current experimental results is described and predictions generated by the implemented model are compared to the shared data. Some inaccuracies are observed in the uniaxial responses, though good agreement is demonstrated overall, especially with regard to the non-proportional tension-torsion experiments.