Abstract
We use a simplified ID version of a 3D thermomechanical model presented by Pham, to describe relaxation and creep in shape memory alloys (SMAs) during stress-induced martensitic transformation. We show that these rheological phenomena are predicted by taking into account, in the heat propagation equation, a thermomechanical coupling associated with the phase transition (latent heat). The results of our experimental tests are in satisfactory agreement with the theoretical predictions. The role of the heat diffusion is underlined.
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