摘要
采用有限元软件COMSOL Mutilphysics模拟仿真,从极化电场加载的角度分析了电极结构对压电纤维复合材料(MFC)中压电纤维极化电场分布的影响,发现电极间距增大和宽度减小,有利于增大纤维中均匀活性区域,提高有效电场的加载,从而获得高压电性,同时电极间距的调控效果更为明显。实验制备MFC并进行了铁电响应和压电性能表征,结果表明:适当增大叉指电极间距和减小叉指电极宽度,能有效提高MFC的极化响应程度进而改善了其压电性能,实验结果与模拟仿真一致。
The effect of electrode structure on the polarization field distribution of piezoelectric ceramic fibers was investigated via the finite element simulation.It is indicated that increasing the electrode spacing and decreasing its width both are beneficial to extend the active electric zone in the fiber and enhance the effective polarization electric field,leading to enhanced piezoelectric properties.Furthermore,the electrode spacing can adjust the polarization more effectively rather than the width does.In addition,macro fiber composites(MFS)were fabricated and the corresponding ferroelectric and piezoelectric properties were characterizatied.The results show that it is an effective way to increase the polarization response of MFC and improve its piezoelectric performance by increasing the spacing and decreasing the width of inter-digital electrode appropriately.The experimental results are consistent with simulated data.
作者
危权
周静
沈杰
陈文
WEI Quan;ZHOU Jing;SHEN Jie;CHEN Wen(State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;Engineering Research Center of Nano-Geo Materials of Ministry of Education,China University of Geosciences,Wuhan 430074,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2020年第1期15-20,共6页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金(51572205)
装备预研教育部联合基金(6141A02022262)
中央高校基本科研业务费专项资金(WUT:2017III035,2018III019)
纳米矿物材料及应用教育部工程研究中心开放课题(NGM2019KF005)。
关键词
压电纤维复合材料
叉指电极结构
有限元法
极化
macro fiber composites
inter-digital electrode structure
finite element method
polarization
作者简介
第一作者:危权(1991-),男,硕士研究生;通信作者:沈杰(1981-),男,博士,副教授。
