Designing 3D Digital Metamaterial for Elastic Waves: From Elastic Wave Polarizer to Vibration Control

Huan Liu, Quan Zhang, Kai Zhang*, Gengkai Hu, Huiling Duan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

69 Citations (Scopus)

Abstract

Elastic wave polarizers, which can filter out linearly polarized elastic waves from hybrid elastic waves, remain a challenge since elastic waves contain both transverse and longitudinal natures. Here, a tunable, digital, locally resonant metamaterial inspired by abacus is proposed, which consists of 3D-printed octahedral frames and built-in electromagnets. By controlling current in the electromagnets, each unit cell exhibits three digital modes, where the elastic waves have different characteristics of propagation under each mode. A variety of waveguides can be formed by a combination of the three modes and desired polarization can be further filtered out from hybrid elastic waves in a tunable manner. The underlying mechanism of these polarizer-like characteristics is investigated through a combination of theoretical analysis, numerical simulation, and experimental testing. This study provides a means of filtering out the desired wave from hybrid elastic waves, and offers promise for vibration control of particle distribution and flexible structure.

Original languageEnglish
Article number1900401
JournalAdvanced Science
Volume6
Issue number16
DOIs
Publication statusPublished - Aug 2019

Keywords

  • 3D digital metamaterials
  • elastic wave polarizers
  • local resonances
  • tunable
  • vibration control

Fingerprint

Dive into the research topics of 'Designing 3D Digital Metamaterial for Elastic Waves: From Elastic Wave Polarizer to Vibration Control'. Together they form a unique fingerprint.

Cite this