【作者】 陈亘； 赵金峰； 潘永东； 仲政；

【Author】 CHEN Gen,ZHAO Jin-feng,PAN Yong-dong,ZHONG Zheng (1.School of Physics Science and Engineering,Tongji University,Shanghai 200092,China 2 Institut des NanoScience de Paris(INSP-UMR CNRS 7588),Universite Pierre et Marie Curie(box 840),Paris 75252,France 3 School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China)

【机构】 同济大学物理科学与工程学院； Institut des NanoScience de Paris(INSP-UMR CNRS 7588),Universite Pierre et Marie Curie(box 840)； 同济大学航空航天与力学学院；

【摘要】 利用压电材料特有的力电耦合的特性及其周期性结构所具有的带隙特性,探讨了利用压电材料对层状结构中的声波进行主动调控的可行性。推导了单层压电材料及层状周期性排布的"压电-流体"结构的频散方程,分别求得单层压电材料的反射谱和层状周期性结构的带隙结构。计算结果表明,压电效应能明显的改变压电材料内的声传播,而电学边界条件也能改变其声传播。更多还原

【Abstract】 The possibility of actively tuning of acoustic wave is explored by the combination of the mechanic-electric coupled piezoelectric material and periodical layered structure.The dispersion equations of a single layer and the layered piezoelectric phonic crystal are derived.And the corresponding spectra and band gap of the single layer and the phonic crystal are obtained.It is found that,the wave propagation through the piezoelectric material is affected dramatically by the piezoelectricity,and by the electrical boundary conditions.更多还原