Tunable phononic crystals based on cylindrical Hertzian contact

Feng Li; Duc Ngo; Jinkyu Yang; Chiara Daraio

doi:10.1063/1.4762832

Tunable phononic crystals based on cylindrical Hertzian contact

Feng Li, Duc Ngo, Jinkyu Yang^*, Chiara Daraio

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

We investigate the tunability of phononic crystals consisting of arrays of cylindrical elements using theoretical, numerical, and experimental approaches. We show that when these systems are excited by a continuous dynamic signal under large static precompression, they support a characteristic band structure whose cutoff frequency can be controlled by changing the alignment angles or the static precompression. Furthermore, we report the formation of an additional pass band when there exists particles eccentricity, which is caused by the coupling mechanism between longitudinal and shear modes.

Original language	English
Article number	171903
Journal	Applied Physics Letters
Volume	101
Issue number	17
DOIs	https://doi.org/10.1063/1.4762832
Publication status	Published - 22 Oct 2012
Externally published	Yes

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abstract = "We investigate the tunability of phononic crystals consisting of arrays of cylindrical elements using theoretical, numerical, and experimental approaches. We show that when these systems are excited by a continuous dynamic signal under large static precompression, they support a characteristic band structure whose cutoff frequency can be controlled by changing the alignment angles or the static precompression. Furthermore, we report the formation of an additional pass band when there exists particles eccentricity, which is caused by the coupling mechanism between longitudinal and shear modes.",

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AU - Daraio, Chiara

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AB - We investigate the tunability of phononic crystals consisting of arrays of cylindrical elements using theoretical, numerical, and experimental approaches. We show that when these systems are excited by a continuous dynamic signal under large static precompression, they support a characteristic band structure whose cutoff frequency can be controlled by changing the alignment angles or the static precompression. Furthermore, we report the formation of an additional pass band when there exists particles eccentricity, which is caused by the coupling mechanism between longitudinal and shear modes.

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Tunable phononic crystals based on cylindrical Hertzian contact

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