Optimization of the Finite Hybrid Piezoelectric Phononic Crystal Beam for the Low-Frequency Vibration Attenuation

2020 ◽  
Author(s):  
Shuguang Zuo ◽  
Panxue Liu ◽  
Xudong Wu ◽  
Lingzhou Sun ◽  
Qi Zhang
Keyword(s):  
Phononic Crystal ◽  
Low Frequency ◽  
Low Frequency Vibration ◽  
Vibration Attenuation

scholarly journals Modal analysis and demonstration of metastructure combining local resonators and an autonomous synchronized switch damping circuit

2022 ◽  
pp. 146134842110682
Author(s):  
Haruhiko Asanuma ◽  
Sumito Yamauchi
Keyword(s):  
Modal Analysis ◽  
Low Frequency ◽  
Coupled Analysis ◽  
Resonant Vibration ◽  
Power Sources ◽  
Low Frequency Vibration ◽  
Vibration Attenuation ◽  
Signal Processors ◽  
Coupled Equation ◽  
Frequency Axis

A locally resonant metastructure is a promising approach for low-frequency vibration attenuation, whereas the attachment of many resonators results in unnecessary and multiple resonance outside the bandgap. To address this issue, we propose a damping metastructure combining local resonators and an autonomous synchronized switch damping circuit. On the basis of modal analysis, we derive an electromechanically coupled equation of the proposed metastructure. The piezo ceramics, which are attached on a small portion of the metastructure and connected to the circuit, remarkably decrease the magnitude of the resonant vibration with no extra sensors, signal processors, or power sources. The displacement at unnecessary resonance was decreased by approximately 75%. The results of the coupled analysis were similar to the experimentally observed results in terms of the location and width of the bandgap on the frequency axis and the decreased displacement for the circuit. The proposed technique can overcome the disadvantage of the metastructure.

Multifunctional Energy Harvesting Locally Resonant Metastructures

2017 ◽  
Author(s):  
Christopher Sugino ◽  
Vinciane Guillot ◽  
Alper Erturk
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Electrical Power ◽  
Flexible Structures ◽  
Low Frequency ◽  
Load Resistance ◽  
Modeling Framework ◽  
Energy Harvesters ◽  
Low Frequency Vibration ◽  
Vibration Attenuation

Vibration-based energy harvesting is a growing field for generating low-power electricity to use in wireless electronic devices, such as the sensor networks used in structural health monitoring applications. Locally resonant metastructures, which are structures that comprise locally resonant metamaterial components, enable bandgap formation at wavelengths much longer than the lattice size, for critical applications such as low-frequency vibration attenuation in flexible structures. This work aims to bridge the domains of energy harvesting and locally resonant metamaterials to form multifunctional structures that exhibit both low-power electricity generation and vibration attenuation capabilities. A fully coupled electromechanical modeling framework is developed for two characteristic systems and their modal analysis is presented. Simulations are performed to explore the vibration and electrical power frequency response maps for varying electrical load resistance, and optimal loading conditions are presented. Case studies are presented to understand the interaction of bandgap formation and energy harvesting capabilities of this new class of multifunctional energy-harvesting locally resonant metastructures. It is shown that useful energy can be harvested from the locally resonant metastructure without significantly diminishing their dramatic vibration attenuation in the locally resonant bandgap. Thus, by integrating energy harvesters into a locally resonant metastructure, there is new potential for multifunctional self-powering or self-sensing locally resonant metastructures.

Study on Mechanism of One-Dimensional Phononic Crystals with Locally Resonant Structures

2011 ◽  
Vol 287-290 ◽  
pp. 650-653
Author(s):  
Zhuo Fei Song ◽  
Qiang Song Wang ◽  
Zi Dong Wang
Keyword(s):  
Phononic Crystal ◽  
Low Frequency ◽  
Phononic Crystals ◽  
Bragg Scattering ◽  
Scattering Mechanism ◽  
One Dimensional ◽  
Resonant Structures ◽  
Low Frequency Vibration ◽  
Lower Frequency Band ◽  
The One

Comprehensive study is performed for the one-dimensional phononic crystals with locally resonant structures mechanism and Bragg scattering mechanism. Found locally resonant mechanism is same as Bragg scattering mechanism on one-dimension phononic crystal. The reasons of producing lower frequency band gap are still stiffness decrease and quality increase. So the theory that locally resonant structure is better than Bragg scattering in low frequency vibration reduction is inexact.

Evidence for complete low-frequency vibration band gaps in a thick elastic steel metamaterial plate

2019 ◽  
Vol 33 (04) ◽  
pp. 1950038 ◽  
Author(s):  
Suobin Li ◽  
Yihua Dou ◽  
Tianning Chen ◽  
Zhiguo Wan ◽  
Jingjing Huang ◽  
...  
Keyword(s):  
Band Gap ◽  
Steel Plate ◽  
Phononic Crystal ◽  
Low Frequency ◽  
Crystal Plate ◽  
Band Gaps ◽  
Formation Mechanisms ◽  
Vibration Band ◽  
Low Frequency Vibration ◽  
Thick Steel

Elastic steel metamaterial plates can be used for noise- and vibration-reduction due to unique physical properties related to their vibration band gap. However, obtaining a complete low-frequency vibration band gap in a thick elastic steel metamaterial plate is difficult. In this paper, we simulate a complete low-frequency vibration band gap in a thick elastic steel metamaterial plate. The structure consists of periodic, double-sided, composite stepped resonators, which were deposited on a 2D locally resonant phononic crystal plate. The phononic crystal plate consists of an array of rubber fillers embedded in a thick steel plate. The dispersion relations, power-transmission spectra, and the displacement fields of the eigenmodes are calculated using the finite-element method. The results show that, for the proposed structure, the opening of the first complete vibration band gap is reduced by a factor of 9.5 compared to a conventional thick elastic steel metamaterial plate. This causes attenuation of low-frequency elastic waves. The formation mechanisms for the vibration band gap are also explored numerically. The results indicate that the formation mechanism for the new low-frequency vibration band gap can be attributed to coupling between a local resonance mode of the composite stepped resonators and the Lamb wave mode of the thick steel-plate. The location of the vibration band gap is determined by the resonator mode of the composite stepped resonators. The vibration band gap effects of the composite stepped resonators are also investigated in this paper. We find that the location of the complete vibration band gaps can be modulated with a relatively low frequency using different composite stepped resonators. Such an elastic steel metamaterial plate with a complete low-frequency vibration band gap can be used to reduce both vibration and noise in various commercial and research applications.

scholarly journals Application of Particle Dampers on a Scaled Wind Turbine Generator to Improve Low-Frequency Vibro-Acoustic Behavior

2022 ◽  
Vol 12 (2) ◽  
pp. 671
Author(s):  
Braj Bhushan Prasad ◽  
Fabian Duvigneau ◽  
Daniel Juhre ◽  
Elmar Woschke
Keyword(s):  
Wind Turbine ◽  
Granular Materials ◽  
Laser Scanning ◽  
Low Frequency ◽  
Small Scale ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Low Frequency Vibration ◽  
Vibration Attenuation ◽  
Particle Damping

The purpose of this paper is to introduce a honeycomb damping plate (HCDP) concept based on the particle damping technique to reduce the low-frequency vibration response of wind turbine generators. The HCDP cells contain granular materials and are mounted at different positions on the generator to reduce the transmission of vibrations from stator ring to stator arm. To investigate the efficiency of the HCDP concept in the laboratory, a small-scale replica inspired by the original wind turbine generator is used as reference geometry. The efficiency of the vibration attenuation by using the HCDP concept is experimentally investigated with the help of a laser scanning vibrometer device. In this contribution, the influence of four different granular materials on the vibration attenuation is experimentally investigated. Furthermore, the influence of HCDP positioning on the transmission path damping is analyzed. Apart from this, the effect of single-unit (SU) and multi-unit (MU) HCDP on the frequency response of the generator is also studied. The experimental approach in this paper shows good damping properties of the HCDP concept for reducing the vibration amplitude.

scholarly journals Three-dimensional resonating metamaterials for low-frequency vibration attenuation

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
W. Elmadih ◽  
D. Chronopoulos ◽  
W. P. Syam ◽  
I. Maskery ◽  
H. Meng ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Low Frequency ◽  
Low Frequency Vibration ◽  
Vibration Attenuation

Low-frequency vibration energy harvesting using a locally resonant phononic crystal plate with spiral beams

2015 ◽  
Vol 29 (01) ◽  
pp. 1450259 ◽  
Author(s):  
Li Shen ◽  
Jiu Hui Wu ◽  
Siwen Zhang ◽  
Zhangyi Liu ◽  
Jing Li
Keyword(s):  
Energy Harvesting ◽  
Phononic Crystal ◽  
Low Frequency ◽  
Crystal Plate ◽  
Vibration Energy ◽  
Flat Band ◽  
Vibration Energy Harvesting ◽  
Band Frequency ◽  
Channel Output ◽  
Low Frequency Vibration

A low-frequency vibration energy generator has been proposed by using a locally resonant phononic crystal plate which has spiral beams connecting the scatterers and the matrix. Finite element analysis shows that at the flat bands frequencies of the phononic crystal, locally resonant leads to the spiral beams having strong deformations which are perpendicular to the plate. A designed structure with three PC cells arranged in the same direction was adopted for the experiments. Piezoelectric patches were adhered on the end of the spiral beams and then the collected vibration energy could be converted into electric energy. The maximum single-channel output voltage which reached as much as 13 V was obtained at the first flat band frequency 29.2 Hz in the experiment. Meanwhile, in the low-frequency range of 0–500 Hz, it showed that the piezoelectric transformation could be conducted at a dozen of resonant frequencies. Furthermore, through modulating the structure parameters, this phononic crystal has the potential to realize broad-distributed vibration energy harvesting.

Modal Analysis of Bandgap Formation for Vibration Attenuation in Locally Resonant Finite Beams

2016 ◽  
Author(s):  
Christopher Sugino ◽  
Stephen Leadenham ◽  
Massimo Ruzzene ◽  
Alper Erturk
Keyword(s):  
Boundary Conditions ◽  
Modal Analysis ◽  
Low Frequency ◽  
Optimal Number ◽  
Frequency Range ◽  
Design Guideline ◽  
Arbitrary Boundary ◽  
Low Frequency Vibration ◽  
Vibration Attenuation ◽  
Unit Cells

Metamaterials made from locally resonating arrays can exhibit attenuation bandgaps at wavelengths much longer than the lattice size, enabling low-frequency vibration attenuation. For an effective use of such locally resonant metamaterial concepts, it is required to bridge the gap between the dispersion characteristics and modal behavior of the host structure with its resonators. To this end, we develop a novel argument for bandgap formation in finite-length beams, relying on modal analysis and the assumption of infinitely many resonators. This assumption is analogous to the wave assumption of an infinitely long beam composed of unit cells, but gives additional analytical insight into the bandgap, and yields a simple formula for the frequency range of the bandgap. We present a design guideline to place the bandgap for a finite beam with arbitrary boundary conditions in a desired frequency range that depends only on the total mass ratio and natural frequency of the resonators. For a beam with a finite number of resonators and specified boundary conditions, we suggest a method for choosing the optimal number of resonators. We validate the model with both finite-element simulations and a simple experiment, and draw conclusions.

Sign in / Sign up

Export Citation Format

Share Document