Haslinger, Stewart G 
ORCID: 0000-0003-0790-1701, Movchan, Natasha V, Movchan, Alexander B, Jones, Ian S ORCID: 0000-0002-5226-0053 and Craster, Richard V
(2016)
Controlling flexural waves in semi-infinite platonic crystals.
Abstract
We address the problem of scattering and transmission of a plane flexural wave through a semi-infinite array of point scatterers/resonators, which take a variety of physically interesting forms. The mathematical model accounts for several classes of point defects, including mass-spring resonators attached to the top surface of the flexural plate and their limiting case of concentrated point masses. We also analyse the special case of resonators attached to opposite faces of the plate. The problem is reduced to a functional equation of the Wiener-Hopf type, whose kernel varies with the type of scatterer considered. A novel approach, which stems from the direct connection between the kernel function of the semi-infinite system and the quasi-periodic Green's functions for corresponding infinite systems, is used to identify special frequency regimes. We thereby demonstrate dynamically anisotropic wave effects in semi-infinite platonic crystals, with particular attention paid to designing systems to exhibit dynamic neutrality (perfect transmission) and localisation close to the structured interface.
| Item Type: | Article |
|---|---|
| Additional Information: | 33 pages, 15 figures |
| Uncontrolled Keywords: | physics.class-ph, physics.class-ph, math.AP |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 05 Nov 2018 09:10 |
| Last Modified: | 19 Jan 2023 01:13 |
| Open Access URL: | https://academic.oup.com/qjmam/article/70/3/216/38... |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3028370 |
Share
Share
