A thermodynamically based model of the superelastic behavior of shape memory alloys using a discrete Preisach model

Shape Memory Alloys are increasingly being used in aeronautic [1], vibration control and seismic applications [2-6]. These applications require models that faithfully represent the full thermomechanical response of SMA wires but which at the same time are simple and fast to implement. In this paper we present a model for the superelastic behavior of Shape Memory Alloys that combines a thermodynamical framework with a Preisach model. This approach allows us to easily account for both stress and strain controlled responses as well as changes in termperature in a simple and straightforward way. Copyright © 2009 by ASME.