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Published October 22, 2012 | Published
Journal Article Open

Tunable phononic crystals based on cylindrical Hertzian contact


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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© 2012 American Institute of Physics. Received 10 August 2012; accepted 9 October 2012; published online 23 October 2012.

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Published - ApplPhysLett_101_171903.pdf


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