各向异性圆盘覆盖换能器或超材料对光束形状适应的数值研究

IF 1 3区 物理与天体物理 Q4 ACOUSTICS Acta Acustica Pub Date : 2023-01-01 DOI:10.1051/aacus/2023024
N. Declercq
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引用次数: 0

摘要

超材料因其改变声束的能力而被广泛研究。除了频率过滤之外,声学透镜还为形成声束提供了有趣的可能性。目前,超材料的多功能性仍然是无限的。然而,在波束形状适应方面,它们的复杂性表明,换能器制造商可以从将超材料与更传统的材料结合起来中获益。本文研究了限定光束在各向异性材料层中的传输,考察了光束在传输后的形状变化。入射的声音在通过各向异性层传输之前,假定来自一个传统的换能器,可能涂有一层超材料来改变声场。研究了不同的入射光束形状,如锥形光束、高斯光束和柱状光束。虽然结果并不详尽,但它们证明了梁形状的适应性。
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Numerical study of beam shape adaptation by anisotropic disk covering transducer or metamaterial
Metamaterials are intensely explored for their capabilities to modify sound beams. In addition to frequency filtering, acoustic lenses offer intriguing possibilities for shaping sound beams. For the time being, the versatility of metamaterials remains limitless. In beam-shape adaptation, however, their complexity suggests that manufacturers of transducers could benefit from combining metamaterials with more conventional materials. This paper investigates the transmission of a circumscribed beam through a stratum of anisotropic material to examine the change in beam shape after transmission. The incident sound is presumed to originate from a conventional transducer, possibly coated with a metamaterial to modify the sound field, before being transmitted through the anisotropic layer. Different incident beam shapes, such as conical-like, Gaussian, and pillar beams, are investigated. While the results are not exhaustive, they demonstrate the beam shape’s adaptability.
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来源期刊
Acta Acustica
Acta Acustica ACOUSTICS-
CiteScore
2.80
自引率
21.40%
发文量
0
审稿时长
12 weeks
期刊介绍: Acta Acustica, the Journal of the European Acoustics Association (EAA). After the publication of its Journal Acta Acustica from 1993 to 1995, the EAA published Acta Acustica united with Acustica from 1996 to 2019. From 2020, the EAA decided to publish a journal in full Open Access. See Article Processing charges. Acta Acustica reports on original scientific research in acoustics and on engineering applications. The journal considers review papers, scientific papers, technical and applied papers, short communications, letters to the editor. From time to time, special issues and review articles are also published. For book reviews or doctoral thesis abstracts, please contact the Editor in Chief.
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