Title :
Dynamic Model for 3-D Magnetostrictive Transducers
Author :
Evans, Phillip G. ; Dapino, Marcelo J.
Author_Institution :
Lincoln Lab., Massachusetts Inst. of Technol., Lexington, MA, USA
Abstract :
A comprehensive analytical framework is developed for the study of magnetostrictive transducers with arbitrary geometries operated in dynamic regimes. Weak form equations are derived from Maxwell´s equations and linear momentum without restricting the form of the constitutive behavior of the magnetostrictive material. For validation, the framework is implemented for a unimorph beam actuator which has both active and passive media.
Keywords :
Maxwell equations; finite element analysis; linear momentum; magnetostrictive devices; transducers; 3D magnetostrictive transducers; Maxwell equation; active media; finite-element model; linear momentum; passive media; unimorph beam actuator; Actuators; Coils; Eddy currents; Magnetic domains; Magnetostriction; Mathematical model; Finite-element modeling; Galfenol; magnetostrictive transducers; nonlinear modeling;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2088130
