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タイトル: | An acoustic metasurface design for wave motion conversion of longitudinal waves to transverse waves using topology optimization |
著者: | Noguchi, Y. Yamada, T. Otomori, M. Izui, K. Nishiwaki, S. |
著者名の別形: | 西脇, 眞二 |
発行日: | 30-Nov-2015 |
出版者: | AIP Publishing |
誌名: | Applied Physics Letters |
巻: | 107 |
号: | 22 |
論文番号: | 221909 |
抄録: | This letter presents an acoustic metasurface that converts longitudinal acoustic waves into transverse elastic waves in an acoustic-elastic coupled system. Metasurface configurations are obtained by a level set-based topologyoptimization method, and we describe the mechanism that changes the direction of the wave motion. Numerical examples of 2D problems with prescribed frequencies of incident acoustic waves are provided, and transverse elastic wave amplitudes are maximized by manipulating the propagation of the acoustic waves. Frequency analysis reveals that each of the different metasurface designs obtained for different wavelengths of incident waves provides peak response at the target frequency. |
著作権等: | © 2015 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article may be found at http://scitation.aip.org/content/aip/journal/apl/107/22/10.1063/1.4936997. |
URI: | http://hdl.handle.net/2433/207707 |
DOI(出版社版): | 10.1063/1.4936997 |
出現コレクション: | 学術雑誌掲載論文等 |
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