声子晶体覆盖层是一种常见的声学材料，因其特有的声传播方式而得到广泛的关注。本文首先利用声子晶体能带结构理论，并结合COMSOL有限元软件，研究声子晶体色散关系与覆盖层吸声性能之间的关系。然后进一步讨论了声子晶体能带范围、振子材料类型、平面波入射角度等对覆盖层吸声性能的影响，对研究声子晶体覆盖层吸声机理提供参考。
Phononic crystal coating is a kind of common acoustic material, which has been widely concerned because of its unique sound propagation mode.In this paper, the relationship between the dispersion relation of phononic crystal and the sound absorption property of the coating are studied by using the band theory of phononic crystal and COMSOL software. Then, the influence of the energy band range of the phononic crystal, the type of the oscillator material and the incident angle of the plane wave on the sound absorption performance of the covering layer is discussed, which provides a reference for the study of the sound absorption mechanism of the covering layer of the phononic crystal.
2021,43(12): 99-104 收稿日期：2021-04-16
DOI：10.3404/j.issn.1672-7649.2021.12.018
分类号：O427.5
作者简介：宋昊(1989-),男,高级工程师,研究方向为水下结构振动与声辐射
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