Finite element analysis of the magnetoelectric effect on hybrid magnetoelectric composites

Modelling the effect of particle arrangement on the magnetoelectric response of a polymer multiferroic film

“…44–46 These systems are believed to be exclusively magnetostrictive and the results are interpreted accordingly, see ref. 14 and 17, for example. Meanwhile, the magnetic torque impelling the particles to rotate is inherent to both magnetically soft (like Terfenol) and magnetically hard (like CFO) particles.…”

“…In these MFs, the particles are entirely surrounded by the polymer in order to make the latter experience in full the mechanical stress generated by the magnetostriction. The most popular matrices are either PVDF (polyvinylidene fluoride) or its copolymer with TrFE (trifluoroethylene) [8][9][10][11][12][13][14][15][16][17] whose piezolelectric ability is higher the greater the content of the so-called b-phase whose amount is intentionally augmented by mechanical pre-processing, for example. 18 The magnetoelectric transducers of the abovedescribed kind are usually designed as oscillatory systems, like cantilevers, membranes, etc.…”

A FEM-BEM coupling strategy for the modeling of magnetoelectric effects in composite structures

“…To validate the magneto-mechanical formulation, we considered an unconstrained magnetostrictive sphere with a constant permeability µ r under a uniform magnetic field and neglect the magnetic forces. Once again, the analytical magnetic field is given by (53). Defining the relative magnetic permeability µ r as the ratio between H and B (i.e., µ r = B/(µ 0 H)), we obtain the following system of equations used to obtain the analytical solution:…”

“…Despite being computationally expensive, numerical tools are not restricted to specific topologies. Simulation based on FEM have been conducted for example, by Buchanan [49] and Galopin et al [50] to study the multilayer and multiphase ME composites response, and by Lee et al [51], Avakian et al [52] and Zhang et al [53] in order to determine the effective properties of linear and non-linear multiphase ME composites. Nevertheless, a classical FE approach can become unsuitable for modeling ME devices with several disadvantages.…”

Micromechanical analysis of magnetoelectric coupling of composites containing nonlinear magnetostrictive and piezoelectric constituents

“…Therefore, nonlinear mechanisms of the magnetostrictive phase should be included in the constitutive relations of magnetoelectric composites. Zhang et al (2020Zhang et al ( , 2022 implemented a nonlinear magnetostrictive model proposed by Zhou et al (2016) into a finite element framework in order to theoretically study self-biased magnetoelectric effect of layered three-phase magnetoelectric composites, i.e., Terfenol-D/PZT-8H/FeCuNbSiB and Terfenol-D/PMN-PT/Terfenol-D, respectively. Similarly, Sai Elakkiya et al…”