哈尔滨工程大学学报2011，Vol.32Issue(9)：1249-1253,5.DOI:10.3969/j.issn.1007-7043.2011.09.027
一类局域共振型声子晶体梁的带隙分析
Research on the band gap in a kind of phononic crystal beam with local resonant structure
摘要
Abstract
In considering the mechanism of the band gap of phononic crystals with local resonance, a kind of 1 -D phononic crystal beam with locally resonant structures was proposed. This beam was composed of an epoxy beam and lead sleeve which were glued together tightly with a vulcanized rubber sleeve. The transmission characteristics of a bending wave were analyzed with the finite element method. The mechanism showing the start-stop frequency of the vibration gap was further studied based on existing basic principles of a local resonant, and corresponding simplified calculation models were proposed. The results show that the phononic crystal beam has a low frequency vibration gap; the starting frequency of the gap is determined by the swing pattern of the local resonator while the relationship of the adjacent resonators'phases shows no obvious regularity. The stop frequency was decided by the anti-phase transverse bending vibration pattern between the beam base and the resonators while the vibration phases of the resonators or cells were found to be opposite to the adjacent ones.关键词
局域共振/声子晶体梁/带隙/有限元/起始频率/截止频率/弯曲振动Key words
local resonant/ phononic crystal beam/ vibration gap/ finite element/ start frequency/ stop frequency/bending vibration分类
社会科学引用本文复制引用
舒海生,张法,余豪华,刘少刚..一类局域共振型声子晶体梁的带隙分析[J].哈尔滨工程大学学报,2011,32(9):1249-1253,5.基金项目
中央高校基本科研业务费自由探索计划基金资助项目(HEUCF110705) （HEUCF110705）
国家科技部社会公益研究专项基金资助项目(2005DIB3J138). （2005DIB3J138）
