Dynamic properties of metamaterials with different resonator connection methods

Han Meng, Dimitrios Chronopoulos

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper investigates the influences of resonator connection methods on the dynamic properties of the elastic metamaterials. A large number of metamaterials with multiple resonators were developed for the purpose of generating multiple bandgaps or broadening the bandwidth. The multiple resonators in a unit cell could be connected end to end in a line, i.e. in series connection, or connected individually to the substrate, i.e. in parallel connection. Resonator connection methods caused considerable differences to the dynamic properties of the metamaterials, it would hence be meaningful to investigate in depth the influences of connection methods, which could offer theoretical basis and foundation for the design of metamaterials with multiple resonators. An analytical model is first employed to calculate the dynamic properties of metamaterial beams with periodical single/in-series/in-parallel resonators respectively. After that, comparisons are made among the calculated frequency response functions of metamaterial beams with resonators of the same mass but different connections methods. It is found that in-series resonators lead to lower frequency bandgaps, while in-parallel resonators result in bandgaps with enlarged bandwidth compared with single resonators. An optimization strategy is also developed to search for the optimal resonator connection architectures and mass distributions that could minimize the maximal receptance functions in targeted frequency ranges. The metamaterial beams with optimal resonator connection methods and mass distributions demonstrate greatly enhanced vibration attenuation at frequencies of interest compared with other beams.

Original languageEnglish
Title of host publication"Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021
EditorsEleonora Carletti, Malcolm Crocker, Marek Pawelczyk, Jiri Tuma
PublisherSilesian University Press
ISBN (Electronic)9788378807995
Publication statusPublished - 2021
Event27th International Congress on Sound and Vibration, ICSV 2021 - Virtual, Online
Duration: 11 Jul 202116 Jul 2021

Publication series

Name"Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021

Conference

Conference27th International Congress on Sound and Vibration, ICSV 2021
CityVirtual, Online
Period11/07/2116/07/21

Fingerprint

Dive into the research topics of 'Dynamic properties of metamaterials with different resonator connection methods'. Together they form a unique fingerprint.

Cite this