| 尹可,马建敏.声学隐身层结构对隐身性能的影响[J].声学技术,2020,39(1):15~21 |
| 声学隐身层结构对隐身性能的影响 |
| The effect of acoustic cloaking covering structure on its cloaking performance |
| 投稿时间：2018-12-20 修订日期：2019-01-20 |
| DOI：10.16300/j.cnki.1000-3630.2020.01.003 |
| 中文关键词: 声学隐身层结构 声场分布 散射截面 声学隐身性能 |
| 英文关键词: acoustic cloaking layer structure acoustic field distribution average visibility acoustic cloaking performance |
| 基金项目: |
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| 中文摘要: |
| 声学隐身层结构对隐身性能有重要的影响。对不同结构的声学隐身层的声场分布和散射截面进行了计算和对比分析。结果表明，声学隐身层的总厚度、层数和层厚分布对隐身性能都有不同程度的影响。当层厚确定时，总厚度越大，隐身性能越好；当总厚度确定时，层数越多，隐身性能越好；当总厚度和层数都确定时，层厚分布从内层向外层逐渐减小的隐身层比层厚分布均匀和层厚从内层向外层逐渐增大的隐身层的隐身性能更好。计算和分析结果对声学隐身层的设计和应用具有一定的参考价值。 |
| 英文摘要: |
| The structure of acoustic cloaking covering has an important effect on the cloaking performance. In this paper the acoustic field distribution and average visibility of different cloaking covering structures are calculated and compared. The results show that the total thickness, the number of layers and the thickness arrangement of the acoustic cloaking covering have different effects on cloaking performance. When the layer thickness is determined, the greater the total thickness, the better the cloaking performance; when the total thickness is determined, the more layers lead to the better cloaking performance; and when the total thickness and the number of layers are determined, the arrangement of decreasing layer thickness from inner to outer will have better cloaking performance than the arrangement of increasing layer thickness from inner to outer and the arrangement of equal layer thickness. The calculation results in this paper have some reference value for the design and application of the acoustic cloaking covering. |
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