二维固-固Suzuki晶格声子晶体薄板弯曲振动特性的研究  

Study of the bending vibration characteristic of two-dimensional solid-solid Suzuki phase phononic crystal thin plates

作　　者：赵元年 孙小伟[1] 廖涛[1] 康太凤 李正伟[1] 

机构地区：[1]兰州交通大学数理学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2017年第4期42-47,共6页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(11464027;51562021)

摘　　要：利用有限元法计算了二维Suzuki晶格声子晶体薄板弯曲振动的带隙结构及传输特性,讨论了填充率、板厚对Suzuki晶格声子晶体板带隙的影响.计算结果表明:Suzuki晶格声子晶体薄板存在振动带隙,即在散射体密度较大时,5000Hz以下存在一个完全带隙、多个方向带隙;Suzuki晶格声子晶体板带隙宽度随着板厚的增大而加宽,随着填充率的增大带隙宽度先增大后减小.The band gap structure and transmission characteristics of the bending vibration for Suzuki phase phononic crystal thin plates were calculated through the finite element method . The influence of the filling fraction and thickness on the band gap of Suzuki phase phononic crystal plate was discussed . Results show that there is a vibration band gap in the Suzuki phase phononic crystal thin plate , and a complete band gap and multiple directions band gap below 5000 Hz when the scatterer density is large . The band gap＇s width become large with the increasing of the thickness of the plate , and with the increasing of the filling fraction , the width of band gap firstly increased and then decreased .

关 键 词：声子晶体 Suzuki晶格 弯曲振动 有限元 

分 类 号：O422[理学—声学]