META Conference, META'12

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Functionally graded laminated phononic crystals with damages
Mikhail Vladimirovich Golub, Chuanzeng Zhang, Sergey Ivanovich Fomenko, Tinh Quoc Bui

Last modified: 2011-12-30

Abstract


Elastic wave propagation in functionally graded periodically layered and damaged composites is investigated using the extended transfer matrix method and the boundary integral equation method.  Two different models are developed to approximate the damaged layer, namely, a periodic array of cracks and continuously distributed springs in the layer. The focus of this analysis is on the wave transmission and reflection, band gaps, localization and resonance phenomena due to the influences of functionally graded properties and crack-like damages.

Keywords


metamaterials; phononic crystals; damages; band gaps; localization; resonance;