J. Phys. IV France 01 (1991) C4-101-C4-106
STRESS-INDUCED PHASE TRANSFORMATIONS IN RATE-TYPE VISCOELASTICITYC. FACIU1, 2
1 Institute of Mathematics, str. Academiei 14, 70109 Bucharest, Romania
2 Physique et Mécanique des Matériaux, 101, rue de la Physique, Domaine Universitaire, BP. 46, F-38402 St Martin d'Hères cedex, France
A Maxwell's rate-type viscoelastic constitutive equation is used to describe stress-induced phase transitions of shape memory alloys in an one-dimensional body. A simplified piecewise linear load-deformation equilibrium curve of "van der Waals type" is prescribed and the non-convex free-energy of the model is determined. We consider two classical types of loading devices : a hard device and a soft device. Energetic estimates and numerical solutions for the corresponding problems are given.
© EDP Sciences 1991