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Please use this identifier to cite or link to this item: http://hdl.handle.net/2108/1447

Title: Phase transformations in electrically conductive ferromagnetic shape-memory alloys, their thermodynamics and analysis
Authors: Tomas, Roubicek
Giuseppe, Tomassetti
Keywords: magnetostriction
martensitic transformation
ferro/paramagnetic transformation
eddy currents
weak solutions
Issue Date: 1-Oct-2012
Abstract: A thermodynamically-consistent general continuum-mechanical model describing mutually coupled martensitic and ferro/paramagnetic phase transformations in electrically-conductive magnetostrictive materials such as NiMnGa is derived, using the small-strain and eddy-current approximations. Yet, large velocities and electric current injected through boundary are allowed. Fully nonlinear coupling of magneto-mechanical and thermal effects is considered. The existence of energy-preserving weak solutions is proved by showing convergence of time-discrete approximations constructed by a carefully designed semi-implicit regularized scheme.
URI: http://hdl.handle.net/2108/1447
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