Elastic Waves Propagation in Thin Plate Metamaterials and Evidence of Low Frequency Pseudo and Local Resonance Bandgaps
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
| Original language | English |
|---|---|
| Pages (from-to) | 2789-2796 |
| Journal / Publication | Physics Letters A |
| Volume | 383 |
| Issue number | 23 |
| Online published | 3 Jun 2019 |
| Publication status | Published - 12 Aug 2019 |
Link(s)
Abstract
A comprehensive numerical simulation study on elastic wave propagation for a novel engineered thin plate metamaterial structural system is presented. To enhance the accuracy of model, a mesh convergence study is validated. The wave dispersion spectra with bandgaps for three types of structures are presented. Based on local resonance phenomena, the low frequency pseudo and local resonance bandgaps are reported. Highlights are also included for the Bragg scattering induced directional bandgaps. The effects of material and geometric parameters on bandgaps are discussed. The finite element based frequency response study further validates the reported bandgaps. The conclusions provide a new perspective for designs and applications of thin plate metamaterials for subwavelength wave manipulation including seismic shielding of civil infrastructures.
Research Area(s)
- Bragg scattering, Dispersion relation, Elastic waves, Local resonance, Low frequency bandgap, Pseudo bandgap, Seismic shielding
Citation Format(s)
Elastic Waves Propagation in Thin Plate Metamaterials and Evidence of Low Frequency Pseudo and Local Resonance Bandgaps. / Muhammad, ; Lim, C. W.
In: Physics Letters A, Vol. 383, No. 23, 12.08.2019, p. 2789-2796.
In: Physics Letters A, Vol. 383, No. 23, 12.08.2019, p. 2789-2796.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
