Shape memory alloys (SMA) are materials exhibiting two functional properties: superelasticity and shape-memory effect. These properties are associated with a phase transformation from twinned martensite to austenite or from detwinned martensite to twinned martensite.
The superelasticity effect is widely exploited in biomedical applications. In order to simulate the behavior of superelastic components, Engineers can rely upon robust and consolidated commercial constitutive models.
Models of the shape memory effect, on the other side, are still object of research.
In this work two phenomenological models describing both the superelastic and shape-memory effect will be described and compared. Some examples of numerical simulations of one of these constitutive models in ANSYS will be presented.
|
22-23 October 2012 Pacengo del Garda 
