https://doi.org/10.1051/epjconf/20100629003
Ni-Mn-Ga single crystal Shape Memory Alloy magneto-thermomechanical modeling
1
LGEF EA 682, Université de Lyon/INSA-Lyon,
F-69621,
Villeurbanne,
France
2
FEMTO-ST Institute UMR 6174, UFC/ENSMM/UTBM/CNRS, Applied
Mechanics Department, 24 rue de l’Épitaphe, 25000
Besancon,
France
3
FEMTO-ST Institute UMR 6174, UFC/ENSMM/UTBM/CNRS, Automatic
Control and MicroMechatronic Systems Department,
24 rue Alain
Savary, 25000
Besancon,
France
a e-mail: christian.lexcellent@univ-fcomte.fr
In the frame of Thermodynamics of irreversible process, a model describing the thermomagneto-mechanical behavior of a single crystal of Ni-Mn-Ga is built. The choice of internal variables is linked to the physics of the problem (fraction of martensite variants, fraction of Weiss domains, magnetization angle). The simulations permit to describe the paths in the space (stress, temperature, magnetic field) in agreement with experimental tests. A special attention will be devoted to the control laws required to use these functional materials as sensors or actuators.
© Owned by the authors, published by EDP Sciences, 2010
