Modeling the Dynamic Behavior of Magnetostrictive Actuators

Bottauscio, O.; Roccato, Paolo Emilio; Zucca, M.

doi:10.1109/tmag.2010.2042152

Cited by 33 publications

(22 citation statements)

References 23 publications

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“…As already mentioned, the few practically implemented models describing the effect of stress on magnetic behavior are restricted to uniaxial mechanical loadings (tension or compression) [5][6][7][8][9][10][11][12][13][14][15]. A first approach to build multiaxial magneto-elastic models consists in the definition of magneto-elastic constitutive laws including the multiaxiality of stress at the local scale.…”

Section: Multiaxial Magneto-elastic Modelsmentioning

confidence: 99%

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Energetical and multiscale approaches for the definition of an equivalent stress for magneto-elastic couplings

Hubert

Daniel

2011

Journal of Magnetism and Magnetic Materials

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Section: Multiaxial Magneto-elastic Modelsmentioning

confidence: 99%

“…Jiles-Atherton type models [5][6][7][8] and Preisach type models [9][10][11][12] are the most popular but other approaches have also been proposed [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Energetical and multiscale approaches for the definition of an equivalent stress for magneto-elastic couplings

Hubert

Daniel

2011

Journal of Magnetism and Magnetic Materials

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“…The GMT are used in many fields such as flow control (like pumps, valves), a precision positioning system, active noise and vibration control as well as sonar systems (Engdahl G., 2000;Jenner A. et al, 2000;Claeyssen F. et al, 2001). The typical GMT consists of active material such as Terfenol-D or Galfenol (Claeyssen F. et al, 2001;Bottauscio O. et al, 2010;Jankowski B. et al, 2011). In order to design the GMT, an accurate modeling of their characteristic, including the nonlinearities and the magneto-mechanical coupling is necessary.…”

Section: Finite Element Analysis Of the Active Element Displacement Imentioning

confidence: 99%

Finite element analysis of the active element displacement in a giant magnetostrictive transducer

Stachowiak

2016

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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Purpose – The purpose of this paper is to find the method for determining the displacement of the active element in a giant magnetostrictive transducer. Design/methodology/approach – The giant magnetostrictive transducer with the active element made of Terfenol-D has been considered. A structure with an axisymmetrical transducer has been proposed. In the proposed model the coupling of magnetic and mechanical field has been taken into account. Maxwell’s equations for electromagnetics and Navier’s equations for mechanical systems are formulated in weak form and coupled using a nonlinear magneto-mechanical constitutive law for Terfenol-D. In order to obtain the distribution of the magnetic and mechanical fields the finite element method was used. The elaborated nonlinear magnetostrictive model has been implemented by using a finite element weak formulation with COMSOL Multiphysics. Findings – The elaborated model for the giant magnetostrictive transducer allows to take into account the magneto-mechanical coupling as well as the material’s nonlinearity. The calculation results of the strain distributions caused by magnetostrictive forces have been presented. The output displacement of a transducer vs supply current for different compressive preload stresses has been calculated and measured. The simulation and measurements results are in close agreement. Research limitations/implications – Taking advantage of the geometrical structure of the prototype of the giant magnetostrictive transducer the computations are performed in an axial-symmetric domain with cylindrical coordinates (r, z, ϑ). The axisymmetric formulation describes the giant magnetostrictive transducers (GMT) without significant loss of accuracy. This approach leads to smaller numerical models and reduced computational time. Practical implications – The elaborated magneto-mechanical model can be used to the design and optimize the structure of GMT. Originality/value – The paper offers the magneto-mechanical model of the giant magnetostrictive transducer. The elaborated model can predict behavior of the magnetostrictive materials it can be used as a tool for the design process of the giant magnetostrictive transducer.

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“…Another type of coupling exists in the magnetostrictive actuators [30], [31]. In [31] the equations of these actuators consist of FE equations of electromagnetic field and the equations of magneto-mechanical Preisach model.…”

Section: Coupled Modelsmentioning

confidence: 99%

“…In [31] the equations of these actuators consist of FE equations of electromagnetic field and the equations of magneto-mechanical Preisach model. The timestepping method is used to solve the equations of the model.…”

Section: Coupled Modelsmentioning

confidence: 99%

Network models of electromagnetic actuators

Demenko

2014

15th International Workshop on Research and Education in Mechatronics (REM)

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The paper presents network models that are used in the analysis and design of electromagnetic actuators. The attention is focused on the magnetic networks. Both permeance and reluctance networks are analyzed. The presented network models are formed using the finite element methods. The interpolating functions of edge and facet finite element are applied in the calculations of branch permeances and reluctances. The methods of winding description in the finite element space are discussed to define the field sources in the network models. The electric network models of the eddy current regions are also considered. Movement simulation techniques in the FE analysis of electromechanical transients are discussed. The relationships that describe the interconnections between the magnetic networks and the electric networks/circuits are presented.

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Modeling the Dynamic Behavior of Magnetostrictive Actuators

Cited by 33 publications

References 23 publications

Energetical and multiscale approaches for the definition of an equivalent stress for magneto-elastic couplings

Energetical and multiscale approaches for the definition of an equivalent stress for magneto-elastic couplings

Finite element analysis of the active element displacement in a giant magnetostrictive transducer

Network models of electromagnetic actuators

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