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Complete bandgaps in two-dimensional phononic crystal slabs with resonators
- Source :
- Journal of Applied Physics. 114:043509
- Publication Year :
- 2013
- Publisher :
- AIP Publishing, 2013.
-
Abstract
- The bandgap properties of an open or covered phononic crystal slab with resonators are studied by using the finite element method. The results show that complete bandgap comes up for the proposed slabs with resonators due to the local resonance. The effects of the topological geometry of the resonators on the bandgaps are discussed, and optimal geometry is suggested. The mechanism of the bandgap generation is analyzed by studying the eigen modes at the bandgap edges. Equivalent spring-mass/pendulum models are developed to predict the eigen frequencies at the lower bandgap edges. The evaluated results obtained by the equivalent models are in general agreement with the numerical ones. The work in this paper is indispensable to the optimal design of the bandgaps of phononic crystal slabs.
- Subjects :
- Optimal design
Materials science
Condensed matter physics
Condensed Matter::Other
Band gap
Physics::Optics
General Physics and Astronomy
Resonance
Finite element method
Crystal
Condensed Matter::Materials Science
Resonator
Slab
Pendulum (mathematics)
Nonlinear Sciences::Pattern Formation and Solitons
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 114
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........d5fc03de7987fbe3e405028b46f2197c