Skip to main content

A Rainbow Metamaterial For Broadband Multi-frequency Vibration Suppression

Buy Article:

$15.00 + tax (Refund Policy)

In this study, we propose a rainbow metamaterial to achieve multi-frequency broadband vibration suppression. A U-shaped beam is partitioned into subspace by parallel baffle plates. Cantilever-mass microstructures are then attached to the each subspace of the composite beam to tune its vibration. Instead of being uniform, these vibration absorbers are rainbow-shaped for the purpose of suppressing vibration within broad frequency band. An analytical model is first developed to estimate the frequency response function of the composite beam. The interaction forces between cantilevers and the beam are calculated by solving the displacement of the mass absorbers. The baffle plates are considered as attached mass with both vibration and rotation considered. Subsequently, the analytical model is validated by comparison with finite element models and experimental results. On the basis of the analytical model, numerical study is conducted to explore the influences of mass distributions on the frequency response property of the composite beam. Results show that composite beam with rainbow-shaped mass posses broad stopband than that with uniform mass. Multi-frequency range vibration suppression can be also achieved for beams with rainbow-shaped mass on both the left and right sides.

Document Type: Research Article

Affiliations: 1: Institute for Aerospace Technology & The Composites Group, University of Nottingham. UK 2: Department of Mechanical Engineering, University of Brasilia. Brazil

Publication date: September 30, 2019

More about this publication?
  • The INTER-NOISE and NOISE-CON congress and conference proceedings is a collection of the presented papers. The papers are not peer reviewed and usually represent a synopsis of the material presented at the congress or conference.

  • Membership Information
  • INCE Subject Classification
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content