Abstract
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.
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