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Attenuation of Rayleigh waves due to three-dimensional surface roughness: A comprehensive numerical evaluation.
Sarris, Georgios; Haslinger, Stewart G; Huthwaite, Peter; Nagy, Peter B; Lowe, Michael J S.
Afiliação
  • Sarris G; Department of Mechanical Engineering, Imperial College London, London SW7 1AY, United Kingdom.
  • Haslinger SG; Department of Mathematical Sciences, University of Liverpool, Liverpool L69 7ZL, United Kingdom.
  • Huthwaite P; Department of Mechanical Engineering, Imperial College London, London SW7 1AY, United Kingdom.
  • Nagy PB; Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, Ohio 45221, USA.
  • Lowe MJS; Department of Mechanical Engineering, Imperial College London, London SW7 1AY, United Kingdom.
J Acoust Soc Am ; 154(2): 808-818, 2023 Aug 01.
Article em En | MEDLINE | ID: mdl-37563828
The phenomenon of Rayleigh wave attenuation due to surface roughness has been well studied theoretically in the literature. Three scattering regimes describing it have been identified-the Rayleigh (long wavelength), stochastic (medium wavelength), and geometric (short wavelength)-with the attenuation coefficient exhibiting a different behavior in each. Here, in an extension to our previous work, we gain further insight with regard to the existing theory, in three dimensions, using finite element (FE) modeling, under a unified approach, where the same FE modeling techniques are used regardless of the scattering regime. We demonstrate good agreement between our FE results and the theory in all scattering regimes. Additionally, following this demonstration, we extend the results to cases that lie outside the limits of validity of the theory.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Acoust Soc Am Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Acoust Soc Am Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Reino Unido