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Analysis of magnetostrictive transducers by the ATILA finite element code
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1989
Year
EngineeringMechanical EngineeringMagnetic ResonanceMagnetic MaterialsMagnetic SensorMagnetismMagnetohydrodynamicsMagnetostrictive TransducersComputational ElectromagneticsInstrumentationElectrical EngineeringMechatronicsMagnetic MeasurementNew Variational PrincipleMagnetoelasticityMagnetic MaterialHigh-power Low-frequency TransducersFinite Element MethodFerromagnetismSpintronicsFerroelasticsNatural SciencesTransducer PrincipleMagnetic PropertyMagnetic Field
New magnetostrictive rare-earth-iron alloys offer an attractive opportunity for the design of high-power low-frequency transducers [F. Claeyssen, J. Acoust. Soc. Am. Suppl. 1 81, S89 (1987)]. In order to optimize the design of this particular class of transducers, a model based on a new variational principle has been derived following a classical finite element method approach. This model describes the three-dimensional dynamic behavior of heterogeneous electrochemically coupled structures. Due to the reduced-scalar-potential formulation of the magnetic field, the model has been relatively easily implemented within the ATILA finite element code. In this paper, a general view of the method is given and first computation results on test structures are presented.