Band gap control of phononic beam with negative capacitance piezoelectric shunt

被引：0
|
作者：
陈圣兵
温激鸿
郁殿龙
王刚
温熙森
机构：
[1] Institute of Mechatronical Engineering,National University of Defense Technology
[2] Key Laboratory of Photonic and Phononic Crystal of Ministry of Education,National University of Defense Technology
来源：
Chinese Physics B | 2011年 / 20卷 / 01期
基金：
中国国家自然科学基金;
关键词：
phononic crystal; band gap; negative capacitive shunt; piezoelectric beam;
D O I：
暂无
中图分类号：
O482.41 [压电现象、电致伸缩];
学科分类号：
070205 ; 0805 ; 080502 ; 0809 ;
摘要：
Periodic arrays of negative capacitance shunted piezoelectric patches are employed to control the band gaps of phononic beams.The location and the extent of induced band gap depend on the mismatch in impedance generated by each patch.The total impedance mismatch is determined by the added mass and stiffness of each patch as well as the shunting electrical impedance.Therefore,the band gap of the shunted phononic beam can be actively tuned by appropriately selecting the value of negative capacitance.The control of the band gap of phononic beam with negative capacitive shunt is demonstrated numerically by employing transfer matrix method.The result reveals that using negative capacitive shunt to tune the band gap is effective.
引用
收藏
页码：409 / 413
页数：5
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