Paper Title:
Flexural Vibration in a Ternary Locally Resonant Phononic Crystal Thin Plate with Defects
  Abstract

The improved supercell plane wave expansion method is applied to theoretically study the propagation of flexural waves in a ternary locally resonant phononic crystal thin plate with a point defect and linear defects. The thin concrete plate composed of a square array of steel cylinders hemmed around by rubber is considered here. Absolute band gaps in low frequency are obtained. For the point defect, the defect mode is localized around the defect, and the magnitude of the resonant defect mode is strongly dependent on the defect filling fraction, mass density and Young’s modulus of the defect cylinder. For the straight linear defects, several resonant linear defect bands appear inside the absolute band gap. And the displacement distributions show that the flexural waves could well propagate along the linear defects.

  Info
Periodical
Advanced Materials Research (Volumes 150-151)
Edited by
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
Pages
1282-1285
DOI
10.4028/www.scientific.net/AMR.150-151.1282
Citation
Z. J. Yao, G. L. Yu, Y. S. Wang, J. B. Li, "Flexural Vibration in a Ternary Locally Resonant Phononic Crystal Thin Plate with Defects", Advanced Materials Research, Vols. 150-151, pp. 1282-1285, 2011
Online since
October 2010
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$32.00
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