摘要
对沿长度方向振动(LT模式)的磁致/压电/磁致(MPM)层合材料的磁电响应进行了理论分析,其中磁致层沿长度方向磁化,压电层沿厚度方向极化.从压电效应和压磁效应本构方程出发,结合材料的机械运动学方程和电路状态方程,重新推导了LT模式下MPM结构的等效电路,完善了文献中的方法,得到了复合材料的磁电电压系数、开路电流、材料内阻、可供电功率与压电、磁致材料各物理参数以及体积参数之间的关系式.以Terfenol-D/PZT/Terfenol-D层合材料为例,对材料磁电响应进行了数值计算,将计算结果与相关实验结果进行了比较.利用磁电响应仿真结果,对磁电层合材料用于磁敏传感器以及自供电换能器进行了讨论.
The theoretical analysis of magnetoelectric performances in long-type magnetostrictive/piezoelectric/magnetostrictive （MPM） laminate composite is presented. The magnetostrictive laminate layers are designated to be magnetized in their longitudinal direction, while the piezoelectric layer is designated to be poled in its thickness direction. The equivalent circuit of the composite is developed based on the constitu- tive equations of magnetostrictive and piezoelectric effects using the motion equation and circuit status equation. In terms of the equivalent circuit, it is straightforward to obtain the magnetoelectric response of the laminate composite, which is dependent on various parameters of magnetostrictive and piezoelectric materials. The derivation matures the theory in the literature. A numerical calculation of Terfenol-D/PZT/ Terfenol-D laminate composite is given out as an example by utilizing the theory. With the simulation outcomes, a discussion is taking on the topics of magnetoelectric laminate composite used as a magnetic sensor and an energy harvesting transducer.
出处
《传感技术学报》
CAS
CSCD
北大核心
2006年第6期2371-2375,共5页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金资助项目(60374045
50677072)
重庆市自然科学基金计划资助
博士点基金项目资助
关键词
压电材料
磁致伸缩材料
磁电响应
自生电传感
能量收集
piezoelectric
magnetostrictive
magnetoelectric response
self-generating sensing
energy harvesting
作者简介
杨帆（1982-），男，硕士研究生，主要研究方向为信息获取与处理，yangfan428@hotmail．com；
文玉梅，女，教授，博士生导师，ymwen@cqu．edu.cn
