Subwavelength seismic metamaterial with an ultra-low frequency bandgap - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Applied Physics Année : 2020

Subwavelength seismic metamaterial with an ultra-low frequency bandgap

Qiu-Jiao Du
  • Fonction : Auteur
  • PersonId : 1084613
Yue-Sheng Wang
  • Fonction : Auteur
  • PersonId : 1084600
B. Assouar

Résumé

A subwavelength seismic metamaterial (SMs) consisting of a three-component SM plate (SMP) and a half space is proposed to attenuate ultra-low frequency seismic surface waves. The design concept and models are verified firstly by lab-scale experiments on the SM consisting of a two-component SMP and a half space. Then we calculate the band structures of the one-dimensional and two-dimensional subwavelength SMs, and evaluate their ability to attenuate Rayleigh waves. A wide ultra-low frequency band gap can be found. And the Rayleigh waves are deflected by the subwavelength SM and converted into bulk waves in the frequency range of this band gap. When the number of the unit cells of the subwavelength SM is sufficient, the transmission distance and deflection angle of the Rayleigh waves are constant at the same frequency. This discovery is expected to open up the possibility of pragmatic 2 seismic protection for large nuclear power plants, ancient buildings and metropolitan areas.
Fichier principal
Vignette du fichier
Seismic Metamaterials.pdf (14.78 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03043181 , version 1 (07-12-2020)

Identifiants

Citer

Yi Zeng, Pai Peng, Qiu-Jiao Du, Yue-Sheng Wang, B. Assouar. Subwavelength seismic metamaterial with an ultra-low frequency bandgap. Journal of Applied Physics, 2020, 128 (1), pp.014901. ⟨10.1063/1.5144177⟩. ⟨hal-03043181⟩
49 Consultations
138 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More