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Journal of Zhejiang University SCIENCE A 2010 Vol.11 No.10 P.827-834


Propagation of flexural waves in phononic crystal thin plates with linear defects

Author(s):  Zong-jian Yao, Gui-lan Yu, Yue-sheng Wang, Zhi-fei Shi, Jian-bao Li

Affiliation(s):  School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

Corresponding email(s):   04121142@bjtu.edu.cn, glyu@bjtu.edu.cn

Key Words:  Phononic crystal, Thin plates, Linear defects, Flexural waves

Zong-jian Yao, Gui-lan Yu, Yue-sheng Wang, Zhi-fei Shi, Jian-bao Li. Propagation of flexural waves in phononic crystal thin plates with linear defects[J]. Journal of Zhejiang University Science A, 2010, 11(10): 827-834.

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journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Propagation of flexural waves in phononic crystal thin plates with linear defects
%A Zong-jian Yao
%A Gui-lan Yu
%A Yue-sheng Wang
%A Zhi-fei Shi
%A Jian-bao Li
%J Journal of Zhejiang University SCIENCE A
%V 11
%N 10
%P 827-834
%@ 1673-565X
%D 2010
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000123

T1 - Propagation of flexural waves in phononic crystal thin plates with linear defects
A1 - Zong-jian Yao
A1 - Gui-lan Yu
A1 - Yue-sheng Wang
A1 - Zhi-fei Shi
A1 - Jian-bao Li
J0 - Journal of Zhejiang University Science A
VL - 11
IS - 10
SP - 827
EP - 834
%@ 1673-565X
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1000123

The band structures of flexural waves in a phononic crystal thin plate with straight, bending or branching linear defects are theoretically investigated using the supercell technique based on the improved plane wave expansion method. We show the existence of an absolute band gap of the perfect phononic crystal and linear defect modes inside the gap caused by localization of flexural waves at or near the defects. The displacement distributions show that flexural waves can transmit well along the straight linear defect created by removing one row of cylinders from the perfect phononic crystals for almost all the frequencies falling in the band gap, which indicates that this structure can act as a high efficiency waveguide. However, for bending or branching linear defects, there exist both guided and localized modes, and therefore the phononic crystals could be served as waveguides or filters.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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