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10:35
Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Band gap structures in two-dimensional super porous phononic crystals
Ying Liu1, Xiu-zhan Sun, Shao-ting Chen
1Department of Mechanics, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, PR China. yliu5@bjtu.edu.cn
Ultrasonics
|October 24, 2012
Summary
This study analyzes elastic wave dispersion in Kagome honeycombs, a new type of linear cellular alloy (LCA). Findings guide the design of superporous phononic crystals for multi-functional applications.
Area of Science:
- Materials Science
- Acoustics
- Solid Mechanics
Background:
- Kagome honeycombs, composed of triangular and hexagonal cells, are advanced linear cellular alloys (LCAs).
- They exhibit superior performance over conventional structures.
- Existing research often focuses on mechanical properties, overlooking wave propagation.
Purpose of the Study:
- To analyze in-plane elastic wave dispersion in Kagome honeycomb structures.
- To explore their potential for multi-functional applications.
- To establish relationships between cell porosity and wave properties.
Main Methods:
- Analysis of band structures in common 2D phononic crystals (triangular and hexagonal honeycombs).
- Extension of analysis to Kagome honeycomb structures.
- Investigation of component cell porosity effects on overall structural response.
Main Results:
- Established the intrinsic relationship between component cell porosity and critical porosity in Kagome honeycombs.
- Demonstrated control over wave dispersion through porosity manipulation.
- Identified key parameters influencing elastic wave propagation.
Conclusions:
- The study provides guidance for designing superporous phononic crystals.
- Elastic wave dispersion analysis is crucial for multi-functional LCA applications.
- Kagome honeycombs offer tunable phononic properties via porosity control.
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