硅酸盐学报2016，Vol.44Issue(10)：1458-1464,7.DOI:10.14062/j.issn.0454-5648.2016.10.11
二维声子晶体的隔声机理及其特性
Transmission Loss Mechanism and Characteristics of Two-dimensional Phononic Crystals
摘要
Abstract
A two-dimensional phononic crystal model was proposed. The band gap and transmission loss was investigatedvia the analysis of the local resonance mechanism and the air-film damping technology. The effect of multiple scattering model on the band gap widening in the case of the increasing number of the vibrator was analyzed. The symmetry of the model is broken by changing the material components, and the effect of symmetry on the band gap and transmission loss was investigated. The results show that the introduction of the air-film damping technology can effectively improve the transmission loss. The multiple scattering model can improve the transmission loss and broaden the band gap, and the 4-vibrators model has the optimum transmission loss. Breaking the symmetry of the model by changing the material components increases the resonance frequencies of the model and improves the transmission loss in certain frequencies. The results can be used as a certain theoretical reference for the practical engineering application of phononic crystals.关键词
声子晶体/局域共振/气体泵动阻尼技术/多振子/对称性Key words
phononic crystals/local resonance/air-film damping technology/multiple vibrators/symmetry分类
通用工业技术引用本文复制引用
祁鹏山,杜军,姜久龙,董亚科,张佳龙..二维声子晶体的隔声机理及其特性[J].硅酸盐学报,2016,44(10):1458-1464,7.基金项目
国家自然科学基金应急管理项目理论物理专款(11447174)；陕西省自然科学基础研究计划(2015JQ5155)项目。 （11447174）
