||CMC: Computers, Materials & Continua, Vol. 43, No. 2, pp. 97-108, 2014
||Full length paper in PDF format. Size = 565,195 bytes
||Ferromagnetic shape memory alloy, Magneto-mechanical coupling,
Finite element analysis, Mechanical behaviors.
||Based on an existing micromechanical constitutive model for Ni2MnGa
ferromagnetic shape memory alloy single crystals, a three-dimensional quasi-static
isothermal incremental constitutive model that is suitable for finite element analysis
is derived by using Hamilton's variational principle. This equation sets up
the coupling relation between the magnetic vector potential and the mechanical
displacement. By using the incremental equation and ANSYS software, the mechanical
behaviors of martensitic variant reorientation for Ni2MnGa single crystals
are analyzed under magneto-mechanical coupling action. And the finite element
results agree well with the experimental data. The methods used in the paper can
well describe the mechanical behaviors of the material in complex fields.