Multifunctional Elastic Metasurface Design with Topology Optimization

Rong, Junjie; Ye, Wenjing

doi:10.2139/ssrn.3474535

Cited by 1 publication

(2 citation statements)

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“…From the nephograms of the phase shift for the transmitted P-and SV-waves, as shown in Figs. 3(a) and 4(a), it can be found that the phase shift indeed has a full 2π coverage in a wide frequency range (28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42)). The corresponding wavelengths for the P-and SV-waves are 191 -127 mm and 111 -74 mm, respectively.…”

Section: The Metasurface and Tunable Functional Unitsmentioning

confidence: 93%

“…splitting of P-wave and SV-wave [35,36], converting P-wave to SV-wave [37] and manipulating multimodal ultrasonic guided waves [38]. Recently, topology optimization has been used to manipulate longitudinal and shear waves [39]. Besides, the surface wave metasurface with a non-resonant meta-ridge was proposed to deflect Rayleigh surface waves [40].…”

Section: Introductionmentioning

confidence: 99%

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Tunable multifunctional fish-bone elastic metasurface for the wavefront manipulation of the transmitted in-plane waves

Yuan

Chen

Cao

et al. 2020

Journal of Applied Physics

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In this work, a tunable fish-bone elastic metasurface is used to manipulate the in-plane waves which are more complex than flexural or out-of-plane waves because of the coupling of the P-and SV-waves. First, the refracted generalized Snell's law (GSL) for mixed in-plane wave is deduced which is also testified by the numerical results. Then according to the GSL, the elastic metasurfaces are designed to realize multifunctions such as directional refraction and wave focusing for different working frequencies. The critical refraction is discussed for the directional refraction and the behavior of SV-wave is predicted when the P-wave is designed to focus at any point by the metasurface.

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