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Wave propagation in viscoelastic phononic crystal rods with internal resonators Lou, J, He, L, Yang, J, Kitipornchai, S and Wu, H 2018, 'Wave propagation in viscoelastic phononic crystal rods with internal resonators', Applied Acoustics, vol. 141, pp. 382-392. Document type: Journal Article Collection: Journal Articles Title Wave propagation in viscoelastic phononic crystal rods with internal resonators Author(s) Lou, J He, L Yang, J Kitipornchai, S Wu, H Year 2018 Journal name Applied Acoustics Volume number 141 Start page 382 End page 392 Total pages 11 Publisher Pergamon Press Abstract In the present work, the wave propagation in a viscoelastic phononic crystal rod with internal periodic dissipative resonators is investigated. The Kelvin-Voigt model is utilized to describe the viscoelastic behavior of host materials. The Bloch theorem is adopted to analyze the band structure of the rod. The effect of the free oscillation frequency of the resonators on the band structure is firstly studied. It is found that by tailoring the dynamic characteristics of the resonators, the coupling of the Bragg scattering (BS) and local resonance (LR) mechanisms can be harnessed to effectively widen the band gaps and enhance the wave attenuation. Then, the effects of the viscosity of the host materials and the damping of the resonators on the band structure, especially the two nearly coalescent band gaps (the first Bragg and LR ones), are investigated respectively. Furthermore, the combined effect of the two dissipative sources is also discussed. The present work is expected to be helpful to the design and applications of phononic crystals and metamaterials. Subject Dynamics, Vibration and Vibration Control Keyword(s) Band gap Bragg scattering Local resonance Viscoelasticity DOI - identifier 10.1016/j.apacoust.2018.07.029 Copyright notice © 2018 Elsevier Ltd. All rights reserved. ISSN 0003-682X Related Links Link Description http://dx.doi.org/10.1016/j.apacoust.2018.07.029 Link to Published Version   Versions Version Filter Type Thu, 31 Jan 2019, 14:10:21 EST Filtered Full Citation counts:   Cited 0 times in Thomson Reuters Web of Science Article Cited 0 times in Scopus Article Altmetric details: Access Statistics: 11 Abstract Views  -  Detailed Statistics Created: Thu, 31 Jan 2019, 11:26:00 EST by Catalyst Administrator