International Seminar on Mechanics and Mechanisms of Solid-Solid Phase Transformations
J. Phys. IV France 06 (1996) C1-45-C1-54
Evolution of Layered Structures in a Gradient-Dependent Viscoplastic MaterialC. Faciu1 and A. Molinari2
1 Institute of Mathematics of the Romanian Academy, P.O. Box 1-764, 70700 Bucharest, Romania
2 Laboratoire de Physique et Mécanique des Matériaux, URA 1215 du CNRS, Université de Metz, Ile du Saulcy, 57045 Metz cedex 1, France
In this paper we discuss a new model to the problem of phase transformations. This model provides a modification of Maxwell's rate-type constitutive equation , by incorporating higher order straingradients in the relaxation function. Thermodynamical aspects and the compatibility with the unmodified Clausius-Duhem inequality are discussed. Numerical results show that the model is able to describe the creation and propagation of regular patterns of martensitic and austenitic stripes during stress-induced phase transitions in shape memory single crystals.
© EDP Sciences 1996