Relationship between Structural Parameters of Sonic Crystals and Sound Transmission Loss
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摘要: 声子晶体在低频段存在振动带隙特性。该特性使声子晶体在减振降噪方面具有广阔的应用前景。本文研究的对象是三组元声子晶体。通过改变填充率、拓扑结构、层数等,分析结构参数对声子晶体隔声性能的影响。研究结果表明:在一定范围内,填充率越高,声子晶体的隔声性能越好。声子晶体的层数越多,声子晶体的隔声性能越好。在低频段,声子晶体的拓扑结构对声子晶体的隔声性能没有明显影响。Abstract: Some experiments indicates that sonic crystals contain local resonant structures which is important for noise and viberation control. The effects of structural parameters on sound transmission loss of three-component sonic crystals are analyzed in this paper. The results indicates that in a certain frequency range,the higher the filling rate,the larger the sound transmission loss,and in low frequency range,there is no relationship between topological structure and sound transmission loss.
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Key words:
- low frequency /
- resonant structures /
- structural parameters /
- sound transmission loss
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