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Study on band structures and localization phenomenon of twodimensional phononic crystals with one-dimensional quasi-periodicity

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2 Author(s)
A-Li Chen ; Institute of Engineering Mechanics, Beijing Jiaotong University, 100044, China ; Yue-Sheng Wang

By viewing the quasi-periodicity as the deviation from the periodicity in a particular way, the quasi phononic crystal that has quasi-periodicity (Fibonacci sequence) in one direction and translational symmetry in the other direction is considered. The band structures are characterized by localization factors which are calculated by using the plane-wave-based transfer-matrix method. The results show that the localization factor is an effective parameter in characterizing the band gaps of two-dimensional phononic crystals with one-dimensional quasi-periodicity. The quasi phononic crystals exhibit more band gaps with narrower width than the ordered and randomly disordered systems.

Published in:

2008 IEEE Ultrasonics Symposium

Date of Conference:

2-5 Nov. 2008