Original Article

Annals of Solid and Structural Mechanics

, Volume 2, Issue 1, pp 19-31

Magneto-thermo-mechanical modeling of a Magnetic Shape Memory Alloy Ni-Mn-Ga single crystal

  • Jean-Yves GauthierAffiliated withLGEF, Université de Lyon, INSA-Lyon
  • , Christian LexcellentAffiliated withApplied Mechanics Department, FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM Email author 
  • , Arnaud HubertAffiliated withAutomatic Control and Micro-Mechatronic Systems Department, FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM
  • , Joël AbadieAffiliated withAutomatic Control and Micro-Mechatronic Systems Department, FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM
  • , Nicolas ChailletAffiliated withAutomatic Control and Micro-Mechatronic Systems Department, FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM

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Abstract

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.

Keywords

Magnetic shape memory alloy Ni-Mn-Ga Modeling Magneto-thermo-mechanical behavior