Analysis of band-gap characteristics of two-dimensional periodic structures using the source-model technique

2003 ◽  
Author(s):  
A. Ludwig ◽  
Y. Leviatan
Keyword(s):  
Band Gap ◽  
Periodic Structures ◽  
Source Model ◽  
Two Dimensional ◽  
Gap Characteristics ◽  
Model Technique

scholarly journals Low frequency band gap characteristics of double-split Helmholtz locally resonant periodic structures

2017 ◽  
Vol 66 (6) ◽  
pp. 064301
Author(s):  
Jiang Jiu-Long ◽  
Yao Hong ◽  
Du Jun ◽  
Zhao Jing-Bo ◽  
Deng Tao
Keyword(s):  
Band Gap ◽  
Frequency Band ◽  
Periodic Structures ◽  
Low Frequency ◽  
Gap Characteristics

Effects of Filling Ratio and Lattice Points Direction on Two-Dimensional Triangular-Lattice Photonic Crystal Band Gap Characteristics

2013 ◽  
Vol 33 (1) ◽  
pp. 0116003
Author(s):  
韩利红 Han Lihong ◽  
刘立明 Liu Liming ◽  
俞重远 Yu Zhongyuan ◽  
郭璇 Guo Xuan ◽  
袁桂芳 Yuan Guifang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Band Gap ◽  
Triangular Lattice ◽  
Filling Ratio ◽  
Lattice Points ◽  
Two Dimensional ◽  
Gap Characteristics

scholarly journals Band gap characteristics of radial wave in a two-dimensional cylindrical shell with radial and circumferential periodicities

AIP Advances ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 035110
Author(s):  
Shuowei An ◽  
Haisheng Shu ◽  
Shanjun Liang ◽  
Xiaona Shi ◽  
Lei Zhao
Keyword(s):  
Cylindrical Shell ◽  
Band Gap ◽  
Two Dimensional ◽  
Radial Wave ◽  
Gap Characteristics

scholarly journals Flexural band gaps and vibration control of a periodic railway track

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohd Iqbal ◽  
Anil Kumar ◽  
Mahesh Murugan Jaya ◽  
Oreste Salvatore Bursi
Keyword(s):  
Vibration Control ◽  
Band Gap ◽  
Periodic Structures ◽  
Control Strategies ◽  
Gaussian White Noise ◽  
Railway Track ◽  
Flexural Wave ◽  
Gap Characteristics ◽  
Flexural Wave Propagation ◽  
Pass Through

AbstractPeriodic structures exhibit unique band gap characteristics by virtue of which they behave as vibro-acoustic filters thereby allowing only waves within a certain frequency range to pass through. In this paper, lateral and vertical flexural wave propagation and vibration control of a railway track periodically supported on rigid sleepers using fastenings are studied in depth. The dispersion relations in both lateral and vertical directions are obtained using the Floquet-Bloch theorem and the resulting dispersion curves are verified using finite element models. Afterwards, tuned mass dampers (TMDs) with different mass ratios are designed to control vibrations of the examined rail in both the directions. Moreover, the influence of damping of rail and resonators on band gap characteristics is investigated. As a replacement to the conventional TMD, a novel possibility to control vibration relies on using another existing rail as a lateral distributed resonator (LDR). Although the effectiveness of LDR is lower than that of localized resonators, the former represents a simple and promising way to control vibrations. Efficacy of the proposed control methods is finally verified by applying a random Gaussian white noise input. The study presented here is useful to understand the propagation and attenuation behavior of flexural waves and to develop efficient and novel vibration control strategies for track structures.

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