Models and general wave properties of two-dimensional acoustic metamaterials and media

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• 作者：Yu. I. Bobrovnitskii
• 关键词：acoustic metamaterials ; periodic structures ; normal waves ; dispersion ; effective parameters ; classification of acoustic media ; hyperbolic media
• 刊名：Acoustical Physics
• 出版年：2015
• 出版时间：May 2015
• 年：2015
• 卷：61
• 期：3
• 页码：255-264
• 全文大小：895 KB
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• 作者单位：Yu. I. Bobrovnitskii (1)
  
  1. Blagonravov Mechanical Engineering Research Institute, Russian Academy of Sciences, Malyi Kharitonovskii per. 4, Moscow, 101990, Russia
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Acoustics
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1562-6865

文摘

For two-dimensional linear acoustic metamaterials and media represented in the form of periodic structures made of complex cells, a general model is proposed, formulas are derived for the effective parameters and energy characteristics, and the restrictions imposed on such media are formulated. They are divided into four main types, differing in general wave properties; the differentiating features of each type are shown. Several new schemes of negative and hyperbolic types of discrete and continuous metamaterials are presented, for which the dispersion dependences are constructed and the corresponding “wave-equations are written.