J. Phys. IV France
Volume 115, June 2004
Page(s) 351 - 359

J. Phys. IV France
115 (2004) 351
DOI: 10.1051/jp4:2004115041

Modelling of the martensitic phase transformation for finite element computation

B. Peultier, T. Benzineb and E. Patoor

ENSAM CER de Metz, Laboratoire de Physique et Mécanique des Matériaux, 4 rue Augustin Fresnel, 57078 Metz Cedex, France

A macroscopic model of the martensitic phase transformation is proposed. It is based on a simplifid micro-mechanical analysis of the phase transformation and involves two macroscopic internal variables: the martensite volume fraction, and the mean transformation strain of the martensitic phase. The behaviour of a volume of SMA is deduced for various thermomechanical loadings. The model is adapted to numerical computation of complex structure in SMA using the Finite Element Method and has been implemented in the ABAQUS finite element code using an implicit integration scheme. A shape memory structure taken from literature is modelled. The computations are in good agreement with experiments and it shows the interest of such models in the engineering of SMA structures and actuators.

© EDP Sciences 2004