Wave propagation and band-gap characteristics of chiral lattices

Plane wave propagation in a chiral lattice is investigated through the application of Bloch's theorem. Two-dimensional dispersion relations are estimated and analyzed to illustrate peculiar properties of chiral or non-centrosymmetric configurations and investigate the directional behavior of wave propagation for varying geometric parameters. Special attention is devoted to the determination of phase and group wave velocities. Considerations based upon the analysis of velocity plots are compared with results obtained from dispersion curves to further validate the directional behavior of the proposed lattice. Finally, The relation of directionality with frequency of the traveling waves is discussed.


Published in:
Proceedings Of The Asme International Design Engineering Technical Conference And Information In Engineering Conference, Vol 1, Pts A-C, 505-515
Presented at:
ASME International Design Engineering Technical Conferences/Computers and Information in Engineering Conference, Las Vegas, NV, Sep 04-07, 2007
Year:
2008
Publisher:
American Soc Mechanical Engineers, Three Park Avenue, New York, Ny 10016-5990 Usa
Keywords:
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 Record created 2011-05-02, last modified 2018-03-17

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