期刊
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
卷 94, 期 -, 页码 226-241出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijengsci.2015.06.002
关键词
Magnetostriction; Terfenol-D; Magnetostrictive composites; Piezoelectricity; Micromechanics analysis; Magnetoelectric effect; High-fidelity generalized method of cells
资金
- National Natural Science Foundation of China [11121202, 11202086, 11402105, 11472201]
- Fundamental Research Funds for the Central Universities [lzujbky-2013-2]
- German-Israel Foundation (GIF) [1166-163]
Nonlinear micromechanical analysis of magnetostrictive composites which was previously developed is presently generalized for the prediction of the behavior of multiferroic composites. These composites consist of nonlinear magnetostrictive and piezoelectric phases. By the application of a magnetic field on the composite, the coupling with the mechanical deformations induces an electric polarization. The resulting of both of magnetostriction (mechanical deformation) and electric effects can be utilized for sensing and actuation. The micromechanical analysis accounts for the detailed interaction between the fully coupled magneto-electro-elastic field in every one of the composite constituents, and establishes the macroscopic (global) instantaneous response of the multiferroic composite at the current loading increment. Applications are given which exhibit the response of the magnetostrictive and piezoelectric flexible Terfenol-D/PVDF and stiff Terfenol-D/PZT particulate composites. Comparisons between the behaviors of particulate, continuous fibers and bilayered composites are shown. In addition, the figure of merit which assesses the magnetoelectric performance is predicted for all types of composites. (C) 2015 Elsevier Ltd. All rights reserved.
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