A new periodic structure composite material with quasi-phononic crystals
PHYSICS LETTERS A(2020)
摘要
Phononic crystals (PCs) provide a new method for vibration insulation and noise reduction. PCs commonly have small bandgap width, and understanding how to expand this bandgap, including the ultra-low band gap, is crucial for applying PCs to vibration reduction in engineering structures. A new periodic structure composite material quasi-PCs is proposed and the high polymer concrete with quasi-PCs structure is conducted. Vibration measurements for the new periodic structure composite material demonstrate that quasi-PC behavior can open the ultra-low frequency band gap. The new periodic structure composite material can be used to reduce vibrations in engineering field. (C) 2020 Elsevier B.V. All rights reserved.
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关键词
Quasi-PCs,Reduction vibration,Band gap,Periodic structure,High polymer concrete
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