Implementation of a constitutive model for different annealed superelastic SMA wires with rhombohedral phase

The calibration and validation of the model has been based on uniaxial tensile tests in thermal chamber on two types of NiTi wires, both exhibiting R-phase transformation, but prepared according to different annealing temperatures. In addition, the model was validated also for the parallel coupling of the two types of annealed wires to reproduce a real application.