声硬超材料的时域均匀化

2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-17 DOI:10.1109/METAMATERIALS.2016.7746495

A. Maurel, J. Marigo, B. Lombard

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引用次数: 0

摘要

我们提出了一种基于匹配渐近展开技术的均匀化方法，用于亚波长尺度结构的声硬材料。考虑时域波动方程，推导了声压和法向速度在非零厚度等效界面上的跳变条件。这些跳跃条件以数值形式实现，并与直接问题的结果进行了比较。

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Homogenization of sound hard metamaterials in the time domain

We present a homogenization method based on a matched asymptotic expansion technique for sound hard materials structured at subwavelength scale. Considering the wave equation in the time domain, jump conditions are derived for the acoustic pressure and the normal velocity across an equivalent interface with non zero thickness. These jump conditions are implemented in a numerical scheme and compared to the results of the direct problem.

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2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)

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