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Comparison of numerical homogenization techniques in BT‐CFO multiferroic particle composites
Author(s) -
Wang Zhibin,
Avakian Artjom,
Ricoeur Andreas
Publication year - 2014
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201410241
Subject(s) - homogenization (climate) , materials science , finite element method , composite material , composite number , representative elementary volume , boundary value problem , multiferroics , mathematical analysis , mathematics , physics , thermodynamics , microstructure , ferroelectricity , biodiversity , ecology , optoelectronics , dielectric , biology
This work is restricted to linear material behavior, i.e. the structure is considered to be in a perfectly poled state. Different numerical homogenization methods are investigated and used to calculate effective properties of a 0‐2 composite modelled in reprensentative volume elements. Bariumtitanate (BT) and cobaltferrite (CFO) are employed in the Finite Element model, where the roles of matrix and inclusion are mutable in principle. Mixed magnetoelectromechanical boundary conditions based on different homogenization theories are applied to the model. The calculated macroscopic behaviors described by the different approaches are compared and presented in the paper. The special focus is on the prediction of coefficients of magnetoelectric coupling with respect to an optimization of the structural arrangement of the composite. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)