標題: Multilayer multiferroic composites with imperfect interfaces
作者: Kuo, Hsin-Yi
Wu, Tien-Jung
Pan, Ernian
土木工程學系
Department of Civil Engineering
關鍵字: multilayer multiferroic composite;imperfect interface;effective property
公開日期: 1-Jul-2018
摘要: We study the macroscopic behaviors of multilayered multiferroic composites with interface imperfections by a direct micromechanical approach. Both generalized interface stress type and generalized linear spring type imperfect interfaces are considered. Concise matrix expressions of the overall behaviors of the layered piezoelectric-piezomagnetic composite with contact imperfection are presented. The key step is to observe that the two types of imperfect interface conditions are equivalent to the perfect ones due to the laminated geometry. Numerical calculations are demonstrated for BaTiO3-CoFe2O4 multilayer media, and are shown in good agreement with the more involved interphase model. Furthermore, it is observed that the interface imperfection would reduce the magnitude of the magnetoelectric voltage coefficients as compared to the corresponding perfect interface case. This feature is opposite to that predicted and observed in the corresponding cylindrical composites.
URI: http://dx.doi.org/10.1088/1361-665X/aac3fc
http://hdl.handle.net/11536/145129
ISSN: 0964-1726
DOI: 10.1088/1361-665X/aac3fc
期刊: SMART MATERIALS AND STRUCTURES
Volume: 27
Appears in Collections:Articles