Complete vibration band gap characteristics of two-dimensional periodic grid structures

2021 ◽  
pp. 114368
Author(s):  
Chuanlong Wang ◽  
Xiongliang Yao ◽  
Guoxun Wu ◽  
Li Tang
Keyword(s):  
Band Gap ◽  
Vibration Band ◽  
Two Dimensional ◽  
Gap Characteristics

scholarly journals Vibration Band Gap Characteristics of Two-Dimensional Periodic Double-Wall Grillages

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7174
Author(s):  
Chuanlong Wang ◽  
Xiongliang Yao ◽  
Guoxun Wu ◽  
Li Tang
Keyword(s):  
Finite Element ◽  
Band Gap ◽  
Transfer Functions ◽  
Finite Element Calculation ◽  
Vibration Band ◽  
Two Dimensional ◽  
Element Calculation ◽  
Band Theory ◽  
Gap Characteristics ◽  
Double Wall

In this article, the wave finite element method (WFEM) is used to calculate the band gap characteristics of two-dimensional (2D) periodic double-wall grillages (DwGs), which are verified by the grillage model vibration measurement experiment and finite element calculation. To obtain the band gap characteristics of periodic DwGs, the finite element calculation model is established according to the lattice and energy band theory and the characteristic equation of the periodic unit cell under the given wave vector condition is solved based on Bloch theorem. Then, the frequency transfer functions of finite-length manufactured and finite element models are obtained to verify the band gap characteristics of periodic DwGs. Finally, the effects of material parameters and structural forms on band gap characteristics and transfer functions are analyzed, which can provide a reference for engineering structure vibration and noise reduction design.

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

Active tuning of the vibration band gap characteristics of periodic laminated composite metamaterial beams

2020 ◽  
Vol 31 (6) ◽  
pp. 843-859 ◽  
Author(s):  
Tao Ren ◽  
Chunchuan Liu ◽  
Fengming Li ◽  
Chuanzeng Zhang
Keyword(s):  
Band Gap ◽  
Piezoelectric Actuator ◽  
Composite Beam ◽  
Laminated Composite ◽  
Dynamic Responses ◽  
Vibration Band ◽  
Gap Characteristics ◽  
Laminated Composite Beam ◽  
Gap Width ◽  
Band Gap Width

A novel strategy is proposed to investigate the vibration band-gap and active tuning characteristics of the laminated composite metamaterial beams. The piezoelectric actuator/sensor pairs are periodically placed along the laminated composite beam axis so that the vibration frequency band-gap and active tuning characteristics can be induced. The dynamic equations of the laminated composite metamaterial beams bonded by the piezoelectric actuator/sensor pairs are established based on the Euler–Bernoulli beam theory. The negative proportional feedback control strategy is employed to provide the positive active control stiffness for the piezoelectric actuator/sensor patches. The spectral element method is used to calculate the dynamic responses of the laminated composite metamaterial beams with the periodically placed piezoelectric patches, and the calculation accuracy for the dynamic responses is validated by the finite element method. The results demonstrating the high-performance vibration band-gap properties in the low-frequency ranges can be achieved by properly designing the sizes and the number of the piezoelectric patches. Moreover, the vibration band-gap characteristics, especially the band-gap width and the normalized band-gap width with respect to the considered excitation frequency range, can be significantly changed by tuning the structural parameters of the piezoelectric actuators and sensors. In addition, the cross-ply angle of the laminated composite metamaterial beams has significant influences on the band-gap characteristics and the vibration reduction performance of the laminated composite beam structures.

Study on Vibration Band Gap Characteristics of Phononic Crystal Consisted of Ti and Rubber

2009 ◽  
Vol 79-82 ◽  
pp. 3-6
Author(s):  
Yan Lin Wang ◽  
Zi Dong Wang ◽  
Zhuo Fei Song
Keyword(s):  
Band Gap ◽  
Volume Fraction ◽  
Phononic Crystal ◽  
Cutoff Frequency ◽  
Vibration Band ◽  
Lumped Mass ◽  
Vibration Effect ◽  
Initial Frequency ◽  
Lumped Mass Method ◽  
Gap Characteristics

The vibration band gaps of one dimensional phononic crystal of rod structure consisted of Ti and Rubber were studied using the lumped-mass method and finite element simulation, the influences of vibration band gap by the periodicity and volume fraction were discussed. The results show that the initial frequency and cutoff frequency have little influence by the periodicity, but the anti-vibration effect is more effective as the periodicity increases; the cutoff frequency gradually decreases, the initial frequency decreases first and then increases as the volume fraction increases.

scholarly journals Analysis of vertical vibration band gap characteristics of periodic discrete support rail

2020 ◽  
Vol 50 (12) ◽  
pp. 1563-1576
Author(s):  
JianFei LU ◽  
XiaoYan LEI ◽  
YuXiong LIANG ◽  
Zhou YANG ◽  
WenJie GUO ◽  
...  
Keyword(s):  
Band Gap ◽  
Vertical Vibration ◽  
Vibration Band ◽  
Gap Characteristics

A few-layer InSe-based sensitivity-enhanced photothermal fiber sensor

2020 ◽  
Vol 8 (1) ◽  
pp. 132-138 ◽  
Author(s):  
Rui Wang ◽  
Qing Wu ◽  
Xiantao Jiang ◽  
Taojian Fan ◽  
Jia Guo ◽  
...  
Keyword(s):  
Band Gap ◽  
Transport Property ◽  
Electrical Transport ◽  
Electrical Transport Property ◽  
Fiber Sensor ◽  
Two Dimensional ◽  
Direct Band Gap ◽  
Gap Characteristics ◽  
Direct Band ◽  
Photo Response

Two-dimensional (2D) InSe has recently attracted increasing attention due to its outstanding electrical transport property, excellent photo-response, and direct band gap characteristics.

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