计算力学学报Issue(3)：353-358,6.DOI:10.7511/jslx201503009
圆管型局域共振声子晶体三维构型振动带隙研究
Study on the 3D polarization band gaps of pipe-shaped locally resonant phononic crystals
摘要
Abstract
The 3D polarization band gaps of pipe-shaped locally resonant phononic crystals with some cer-tain stiffness are studied based on the multi-level substructure method.The influence of different wrap-ping directions on the 3D polarization band gaps is discussed.Moreover,the vibration modes under the frequencies of the maximum of the underlying bands and the minimum of the overlying bands of the first band gaps are discussed.The results show that relatively low and wide band gaps can be achieved by both of the two wrapping directions.The 3D polarization band gaps of the two kinds of cells are similar,so the periodic structures of these kinds of phononic crystals will help to prevent the propagation of some wide frequency range of elastic waves in relatively low frequency level to some extent.However,their vibra-tion modes at the boundary of the band gaps are different.In addition,3D polarization band gaps will be influenced by the size of the cells.Moreover,the influence of the wrapping materials on the band gaps is discussed through the relationship between related materials and the band gaps evaluation concluded in a phase diagram.关键词
低频减振/局域共振/声子晶体/带隙特性Key words
vibration reduction/locally resonant/phononic crystals/band gaps分类
机械制造引用本文复制引用
黄佳,尹进,张昭,张洪武..圆管型局域共振声子晶体三维构型振动带隙研究[J].计算力学学报,2015,(3):353-358,6.基金项目
国家自然科学基金(11172057) （11172057）
国家重点基础研究发展(973)计划(2011CB013401) （973）
国家高技术研究发展(863)计划(2012AA050901) （863）
中央高校基本科研业务费专项资金 （）
新世纪优秀人才支持计划资助项目 （）
