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MECSOL 2019
7th International Symposium on Solid Mechanics
Evaluation of the Souza–Auricchio Shape Memory Alloy Model using Axial-Torsional Test Data
Submission Author:
Tiago Fonseca , DF
Co-Authors:
Tiago Fonseca, Fábio Castro
Presenter: Tiago Fonseca
doi://10.26678/ABCM.MECSOL2019.MSL19-0054
Abstract
There is an increasing need for three-dimensional shape memory alloy (SMA) constitutive models that can predict stress and strain states with a reasonable accuracy for a wide range of multiaxial loading conditions. Despite of that, experimental evaluations of SMA models have been limited to restricted loading conditions. In this work, the Souza–Auricchio model is evaluated using axial-torsional test data available in the literature to identify its limitations. Numerical simulations of the stress-strain hysteresis loop of thin-walled tubes subjected to axial-torsional loading indicated that the Souza–Auricchio model cannot describe the shear behavior with acceptable accuracy.
Keywords
Shape Memory Alloys, Souza-Auricchio model, Experimental Evaluation, Axial-Torsional
