About modelling the shape memory alloy behaviour based on the phase transformation surface identification under proportional loading and anisothermal conditions
Résumé
Based on the experimental identification of the phase transformation surface, a modelling of shape memory alloys anisothermal behaviour is proposed. Within the framework of the thermodynamics of irreversible processes, two internal variables are chosen: the stress-induced martensite volume fraction and the self-accommodating martensite volume fraction. A special attention is paid to take into account the asymmetry between tension and compression behaviours.