NDLI: Tunable Band Gaps of Acoustic Waves in Two-Dimensional Phononic Crystals With Reticular Band Structures

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Huang, Zi-Gui Hwang, Yunn-Lin Wang, Pei-Yu Mao, Yen-Chieh
Copyright Year	2009
Abstract	The excellent applications and researches of so-called photonic crystals raise the exciting researches of phononic crystals. By the analogy between photon and phonon, repetitive composite structures that are made up of different elastic materials can also prevent elastic waves of some certain frequencies from passing by, i.e., the frequency band gap features also exist in acoustic waves. In this paper, we present the results of the tunable band gaps of acoustic waves in two-dimensional phononic crystals with reticular band structures using the finite element method. Band gaps variations of the bulk modes due to different thickness and angles of reticular band structures are calculated and discussed. The results show that the total elastic band gaps for mixed polarization modes can be enlarged or reduced by adjusting the orientation of the reticular band structures. The phenomena of band gaps of elastic or acoustic waves can potentially be utilized for vibration-free, high-precision mechanical systems, and sound insulation.
Starting Page	159
Ending Page	162
Page Count	4
File Format	PDF
ISBN	9780791843888
DOI	10.1115/IMECE2009-13102
e-ISBN	9780791838631
Volume Number	Volume 15: Sound, Vibration and Design
Conference Proceedings	ASME 2009 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2009-11-13
Publisher Place	Lake Buena Vista, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Phononic crystals Vibration Crystals Phonons Acoustics Photons Elastic waves Finite element methods Waves Polarization (waves) Polarization (electricity) Energy gap Composite materials Polarization (light) Electromagnetic spectrum Acoustical materials
Content Type	Text
Resource Type	Article

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