MODELLING OF SUPERELASTICITY OF SMA BASED ON THE EXPERIMENTALLY OBTAINED STRESS-STRAIN DIAGRAMS

抄録

Superelasticity is very applicable property of shape memory alloys, and for its wide implementation engineering practice it is important to have an efficient method which would enable designers to consider the material properties with sufficient precision in their calculations. From the application point of view a new model is proposed in the paper. The general characteristic of the model is that modelling is based on the experimentally obtained stress-strain diagrams what is important for direct implementation of the material properties in design. With the model various tension and pure bending loading conditions were simulated numerically and the results are compared with the corresponding results obtained experimentally.