Linear Defect States of Phononic Crystal Thin Plates – An Application of Finite Element Method

Zong Jian Yao; Gui Lan Yu; Yue Sheng Wang; Wenjun Hu

doi:10.4028/www.scientific.net/AMR.652-654.48

Paper Titles

The Static Mechanical Properties of Carbon/Epoxy Composite Laminates with Voids
p.29

Compressive Behavior of Spark Plasma Sintered CNT Reinforced Al2124 and Al6061 Nanocomposites
p.33

Bentonite Composite and Fibre
p.38

Exploration of Al Matrix Composites Reinforced with Al-Ti Intermetallics/Ti Metal Compound Spherical Agents
p.43

Linear Defect States of Phononic Crystal Thin Plates – An Application of Finite Element Method
p.48

Effects of Delaminations on Vibration Characteristic for HT3/5224 Carbon Fiber Reinforced Laminated Plate
p.52

Electrical Property of Carbon Nanotubes/Epoxy Resin/Polyetherimide Composites with Inverted-Phase Structure
p.56

Fabrication and Microstructures of WC-Based Composites by Plasma Jet Metallurgy
p.60

Microstructure and Wear Properties of In Situ Production of (Fe,Cr)₇C₃ Particulate Bundles Reinforced Iron Matrix Composites
p.64

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Linear Defect States of Phononic Crystal Thin Plates – An Application of Finite Element Method

Abstract:

In this paper, propagation of flexural vibration in phononic crystal thin plates with straight, bending or branching linear defects are explored using finite element method. The plate is composed of an array of circular crystalline Al₂O₃ cylinders embedded periodically in the epoxy matrix with a square lattice. The numerical results showed that accurate band structures and transmission response curves could be obtained by finite element method compared with that of improved plane wave expansion method. The exploration indicated that finite element method is efficient and suitable in dealing with the wave propagation in phononic crystal, and displays potential abilities in dealing with complex structures.