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Mathematical Problems in Engineering
Volume 2013, Article ID 197940, 14 pages
http://dx.doi.org/10.1155/2013/197940
Research Article

A Nonlinear Finite Element Method for Magnetoelectric Composite and the Study on the Influence of Interfacial Bonding

1AML, CNMM, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
2LTCS, College of Engineering, Peking University, Beijing 100084, China

Received 13 July 2013; Accepted 30 August 2013

Academic Editor: Song Cen

Copyright © 2013 He-Ling Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Magnetoelectric composite material is effective in transferring magnetic field into electric signal. In this paper, a nonlinear finite element method is present to model the magnetoelectric composite of ferroelectric and magnetostrictive material. In the method, the nonlinear and coupling behavior of magnetostrictive material such as Terfenol-D is considered. The nonuniform magnetic, electric, and mechanical field distributions are present. An interfacial transferring coefficient is defined to investigate the performance of interfacial mechanical coupling quantitatively, and the influence of the properties of interfacial bonding material and interfacial cracks on magnetoelectric coefficient is discussed. A new laminate ME composite of curved interface is proposed to overcome weak interfacial bonding.