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总览 评价 张春利 1, , 陈伟球 2,* ( 1、 浙江大学建筑工程学院; 2、 浙江大学工程力学系; ) 摘要: 多铁性杆横截面的不均匀性会影响其磁电耦合效应和其它性能。本文基于多铁性材料梁结构的轴向运动的一维简化理论,建立了非均匀杆在纯拉伸模式下的控
张春利1,, 陈伟球2,*
(
1、浙江大学建筑工程学院; 2、浙江大学工程力学系; )
摘要:
多铁性杆横截面的不均匀性会影响其磁电耦合效应和其它性能。本文基于多铁性材料梁结构的轴向运动的一维简化理论,建立了非均匀杆在纯拉伸模式下的控制方程,并采用状态空间法对磁电耦合效应进行了分析。针对不同截面参数和边界条件给出了数值算例,结果表明在同等条件下,非均匀杆的磁电效应有可能大于均匀杆,这为设计具有更大磁电耦合效应的多铁性器件结构提供了理论指导。
关键词:
多铁性材料;磁电效应;非均匀杆
Zhang Chun-li1,, Chen Wei-qiu2,*
(
1、College of Civil Engineering and Architecture, Zhejiang University; 2、Department of Engineering Mechanics, Zhejiang University; )
Abstract:
We analyze the magnetoelectric effect of non-uniform multiferroic composite nanofibers composed of both piezoelectric and piezomagnetic phases. The non-uniformity could be induced by the manufacturing error and may have an influence on the magnetoelectric effect. The governing equation is formulated based on the zero-order beam theory, and the state space method is used to compute the magnetoelectric coefficient. Numerical examples are presented for a non-uniform composite nanofiber with different non-uniformity parameters and boundary conditions. The results show that the non-uniformity of the cross-section may increase the magnetoelectric effect, and thus provides a simple and also attracting way for the design of high-performance magnetoelectric structures.
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