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Author Lim, Qi Jian ♦ Wang, Pai ♦ Koh, Soo Jin Adrian ♦ Khoo, Eng Huat ♦ Bertoldi, Katia
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ BEAMS ♦ DESIGN ♦ FRACTALS ♦ HYBRIDIZATION ♦ METAMATERIALS ♦ NUMERICAL ANALYSIS ♦ SCATTERING ♦ WAVE PROPAGATION
Abstract We combine numerical analysis and experiments to investigate the effect of hierarchy on the propagation of elastic waves in triangular beam lattices. While the response of the triangular lattice is characterized by a locally resonant band gap, both Bragg-type and locally resonant gaps are found for the hierarchical lattice. Therefore, our results demonstrate that structural hierarchy can be exploited to introduce an additional type of band gaps, providing a robust strategy for the design of lattice-based metamaterials with hybrid band gap properties (i.e., possessing band gaps that arises from both Bragg scattering and localized resonance)
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-11-30
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 22


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