噪声与振动控制2018，Vol.38Issue(z1)：51-55,5.DOI:10.3969/j.issn.1006-1355.2018.Z1.010
晶格常数对声学超材料板隔声特性的影响研究
Influence of Lattice Constant on Sound Insulation Properties of Acoustic Metamterial Plates
摘要
Abstract
We use finite element method to investigate the influence of lattice constant on sound insulation properties of acoustic metamterial plates constructed by periodically depositing two-layer cylindrical stubs on the surface of a thin homogeneous plate. In this investigation we present several structure design schemes. First scheme is that the mass ratio of resonators to the plate is not limited. Numerical results show that the effect of the resonators become less obvious along with the decrease of lattice constant. The second scheme is that the mass ratio of resonators to plate limited to 100%.When the radius of stubs is fixed, the smaller the lattice constant the better sound insulation properties. When the radius of stubs change with lattice constant, the lattice constant should be neither too large or too small to realize broadband sound insulation performance .关键词
声学/声学超材料板/晶格常数/隔声特性/能带结构Key words
acoustic/acoustic metamterial plates/lattice constant/sound insulation properties/dispersion relations分类
建筑与水利引用本文复制引用
何晓栋,肖勇,温激鸿..晶格常数对声学超材料板隔声特性的影响研究[J].噪声与振动控制,2018,38(z1):51-55,5.基金项目
装备预研领域基金资助项目(61402100105) （61402100105）
