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Guiding near-source elastic waves in a semi-infinite medium.
Cui, Kemeng; Xu, Zhao-Dong; Palermo, Antonio; Marzani, Alessandro; Pu, Xingbo.
Afiliación
  • Cui K; China-Pakistan Belt and Road Joint Laboratory on Smart Disaster Prevention of Major Infrastructures, School of Civil Engineering, Southeast University , Nanjing 211189, People's Republic of China.
  • Xu ZD; China-Pakistan Belt and Road Joint Laboratory on Smart Disaster Prevention of Major Infrastructures, School of Civil Engineering, Southeast University , Nanjing 211189, People's Republic of China.
  • Palermo A; Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna , Bologna 40136, Italy.
  • Marzani A; Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna , Bologna 40136, Italy.
  • Pu X; Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong.
Philos Trans A Math Phys Eng Sci ; 382(2278): 20240039, 2024 Sep 09.
Article en En | MEDLINE | ID: mdl-39069755
ABSTRACT
In this work, we propose elastic metamaterials with phase discontinuities to steer the propagation of near-source bulk waves in a semi-infinite elastic medium. Our design exploits an array of embedded subwavelength resonators with tailored masses to attain a complete phase shift spanning [Formula see text]. This phase control allows for diverse wave functionalities, such as directional refraction and energy focusing. Through the use of dispersion diagrams and the generalized Snell's law, along with a multiple scattering formulation, we analytically demonstrate the effectiveness of our design in achieving the desired wavefront manipulation. The proposed design has the potential to advance the field of guiding elastic waves using metamaterials and find practical applications in areas such as isolating ground-borne vibrations in densely urbanized regions and energy harvesting. This article is part of the theme issue 'Current developments in elastic and acoustic metamaterials science (Part 1)'.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Philos Trans A Math Phys Eng Sci Asunto de la revista: BIOFISICA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Philos Trans A Math Phys Eng Sci Asunto de la revista: BIOFISICA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido