›› 2018, Vol. 38 ›› Issue (4): 6-11.DOI: 10.3969/j.issn.1006-1355.2018.04.002

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Analysis and Application of Band Gap Characteristics of Two-dimensional Sonic Crystals

  

  • Received:2017-12-18 Revised:2018-02-06 Online:2018-08-18 Published:2018-08-18

二维声子晶体带隙特性分析与应用研究

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  1. （ 1.武汉理工大学能源与动力工程学院，武汉 430063； 2.船舶动力系统运用技术交通行业重点实验室，武汉 430063）
  • 通讯作者: 向阳

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摘要：

声子晶体在减振方面拥有广泛应用前景，而带隙分析是将其付诸应用的首要前提。先利用有限元法研究结构与材料参数对带隙的影响，接着基于带隙特性分析的结果，根据实验所得的典型船用离心泵机脚的振动特性，设计以硅橡胶为基体、铅为散射体的声子晶体薄板。将声子晶体引入舱段减振设计中并进行相应的数值响应验证，结果表明：将所设计的声子晶体薄板插入舱段的内底板，在带隙作用范围内可有效阻抑振动传递，并降低舱段外壳的振动响应。

关键词: 声学, 声子晶体, 带隙特性, 离心泵, 减振降噪

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