Energy Harvesting for System of Coupled Oscillators Under External Excitation in the Vicinity of Resonance 1:1

2020 ◽  
Vol 15 (12) ◽  
Author(s):  
Leonardo Acho Zuppa ◽  
Jan Awrejcewicz ◽  
Nataliya Losyeva ◽  
Volodymyr Puzyrov ◽  
Nina Savchenko
Keyword(s):  
Energy Harvesting ◽  
Coupled Oscillators ◽  
Degrees Of Freedom ◽  
Vibration Energy ◽  
Vibration Absorber ◽  
External Excitation ◽  
Additional Element ◽  
Main Mass ◽  
Theoretical Results ◽  
Piezo Electric

Abstract Vibration energy is abundantly present in many natural and artificial systems and can be assembled by various devices, mainly employing the benefits of the piezo-electric and electromagnetic phenomena. In the present article, the electromechanical system with two degrees-of-freedom is considered. An additional element (dynamical vibration absorber or DVA) is attached to the main mass, whose vibrations are to be reduced. The DVA consists of a spring, damping, and piezo-electric elements for energy harvesting. The goal is to reduce the maximal possible responses of the main structure at the vicinity of external 1:1 resonance and at the same time collect energy from the vibration of the system. An analytical approach is proposed to find the solution of the problem. We show that the piezo-electric element allows effective energy harvesting and at the same has a very limited influence on reducing the amplitude of oscillations of the main mass. The theoretical results are confirmed by numerical experiments.

ENERGY HARVESTING USING A NONLINEAR VIBRATION ABSORBER

2016 ◽  
Vol 40 (2) ◽  
pp. 221-230
Author(s):  
Yu Zhang ◽  
Riccardo De Rosa ◽  
Jingyi Zhang ◽  
Mariam Alameri ◽  
Kefu Liu
Keyword(s):  
Energy Harvesting ◽  
Nonlinear Vibration ◽  
Vibration Suppression ◽  
System Modeling ◽  
Electric Energy ◽  
Harmonic Excitation ◽  
Vibration Energy ◽  
Vibration Absorber ◽  
Nonlinear Vibration Absorber

In this study, an energy harvesting device based on a nonlinear vibration absorber is developed to achieve two objectives: vibration suppression and energy harvesting in a wideband manner. First, the proposed design is described. Next, the system modeling is addressed. The parameter characterization is presented. Then, the performance of the nonlinear vibration absorber is tested by sweeping harmonic excitation. The testing results have shown that the device can suppress vibration and convert vibration energy into electric energy in a broadband manner.

scholarly journals Output Performance Analysis on a Two-degrees-of-Freedom Bistable Piezoelectric Vibration Generator

2015 ◽  
Vol 11 (6) ◽  
pp. 22
Author(s):  
Qing He ◽  
Xinhua Mao ◽  
Dongliang Chu
Keyword(s):  
Degrees Of Freedom ◽  
Low Frequency ◽  
Vibration Energy ◽  
External Excitation ◽  
Generator System ◽  
Two Degrees Of Freedom ◽  
Output Performance ◽  
Amplitude Vibration ◽  
Output Characteristics ◽  
Piezoelectric Vibration

For harvesting the low-frequency and weak-amplitude vibration energy in real environment, a two-degrees-of-freedom bistable piezoelectric vibration generator is designed. And the dynamic model of the piezoelectric vibration generator system is established. And the influence of the external excitation on the output characteristics of the two-degree-freedom piezoelectric vibration generator system is simulated and analyzed. The results show that the two-degrees-of-freedom bistable piezoelectric vibration generator would do better in harvesting and converting for the low-frequency and weak-amplitude vibration energy.

Experimental Investigation of Piezoelectric Bimorph Cantilever on Vibration Energy Harvesting Performance

2013 ◽  
Vol 655-657 ◽  
pp. 816-822
Author(s):  
Jun Jie Gong ◽  
Ying Ying Xu ◽  
Zhi Lin Ruan ◽  
Long Chao Dai
Keyword(s):  
Experimental Investigation ◽  
Energy Harvesting ◽  
Natural Frequency ◽  
Proof Mass ◽  
Structural Parameters ◽  
Vibration Energy ◽  
Equivalent Stiffness ◽  
Vibration Energy Harvesting ◽  
Piezoelectric Cantilever ◽  
Theoretical Results

The bimorph piezoelectric cantilever model for vibration energy harvesting was established to analyse its natural frequency and generating performance according to Euler-Bernoulli theory. The influence of the length and thickness of piezoelectric cantilever on natural frequency and generating voltage was discussed by computing the cantilever equivalent stiffness. Experimental investigation was performed to measure its natural frequency and output generating voltage of bimorph piezoelectric cantilever, and the effect of cantilever with different proof mass and structural parameters on generating performance was also analysed. Theoretical results of bimorph piezoelectric cantilever are compared with experimental results qualitatively, good correlations are observed.

Nonlinear Vibration Absorber for Mitigation of Torsional Vibrations

2012 ◽  
Author(s):  
Ammaar Bin Tahir ◽  
Oleg Shiryayev ◽  
Hamad Karki ◽  
Nader Vahdati
Keyword(s):  
Nonlinear Vibration ◽  
Degrees Of Freedom ◽  
Vibration Energy ◽  
Vibration Absorber ◽  
Torsional Vibrations ◽  
Energy Absorber ◽  
Nonlinear Vibration Absorber ◽  
Stiffness Characteristic ◽  
Nonlinear Energy ◽  
Cubic Stiffness

This work discusses the effects of utilizing a nonlinear energy absorber with linear and cubic stiffness characteristic in mitigating torsional vibrations in a 5 degrees-of-freedom (5-DOF) rotational system. Results comparing the effects of adding a linear TMD in the system with those obtained by adding an NES are presented which demonstrate the usefulness of an NES over a conventional TMD. Subsequently, a simpler translational system comprising of an NES is considered and an optimization-based tuning methodology is used in order to tune the NES for maximum dissipation of vibration energy. The results are compared with those obtained for the system with a linear absorber.

Simply supported FPEDs connected by springs for broadband energy harvesting

2020 ◽  
Vol 64 (1-4) ◽  
pp. 201-210
Author(s):  
Yoshikazu Tanaka ◽  
Satoru Odake ◽  
Jun Miyake ◽  
Hidemi Mutsuda ◽  
Atanas A. Popov ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Evaluation Method ◽  
Energy Harvester ◽  
Vibrational Energy ◽  
Functional Materials ◽  
Vibration Energy ◽  
Theoretical Evaluation ◽  
Vibration Energy Harvester ◽  
Polyvinylidene Difluoride ◽  
Simply Supported

Energy harvesting methods that use functional materials have attracted interest because they can take advantage of an abundant but underutilized energy source. Most vibration energy harvester designs operate most effectively around their resonant frequency. However, in practice, the frequency band for ambient vibrational energy is typically broad. The development of technologies for broadband energy harvesting is therefore desirable. The authors previously proposed an energy harvester, called a flexible piezoelectric device (FPED), that consists of a piezoelectric film (polyvinylidene difluoride) and a soft material, such as silicon rubber or polyethylene terephthalate. The authors also proposed a system based on FPEDs for broadband energy harvesting. The system consisted of cantilevered FPEDs, with each FPED connected via a spring. Simply supported FPEDs also have potential for broadband energy harvesting, and here, a theoretical evaluation method is proposed for such a system. Experiments are conducted to validate the derived model.

Suppressing Chaos in a Nonideal Double-Well Oscillator Using an Based Electromechanical Damped Device

2014 ◽  
Vol 706 ◽  
pp. 25-34 ◽  
Author(s):  
G. Füsun Alişverişçi ◽  
Hüseyin Bayiroğlu ◽  
José Manoel Balthazar ◽  
Jorge Luiz Palacios Felix
Keyword(s):  
Numerical Simulations ◽  
Chaotic Dynamics ◽  
Duffing Oscillator ◽  
Vibration Energy ◽  
Vibration Absorber ◽  
Electrical System ◽  
Chaotic Vibration ◽  
System A ◽  
Ideal System ◽  
Double Well Potential

In this paper, we analyzed chaotic dynamics of an electromechanical damped Duffing oscillator coupled to a rotor. The electromechanical damped device or electromechanical vibration absorber consists of an electrical system coupled magnetically to a mechanical structure (represented by the Duffing oscillator), and that works by transferring the vibration energy of the mechanical system to the electrical system. A Duffing oscillator with double-well potential is considered. Numerical simulations results are presented to demonstrate the effectiveness of the electromechanical vibration absorber. Lyapunov exponents are numerically calculated to prove the occurrence of a chaotic vibration in the non-ideal system and the suppressing of chaotic vibration in the system using the electromechanical damped device.

scholarly journals Experiment Investigation of Bistable Vibration Energy Harvesting with Random Wave Environment

2021 ◽  
Vol 11 (9) ◽  
pp. 3868
Author(s):  
Qiong Wu ◽  
Hairui Zhang ◽  
Jie Lian ◽  
Wei Zhao ◽  
Shijie Zhou ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Harvesting ◽  
Cantilever Beam ◽  
Large Scale ◽  
Low Frequency ◽  
Vibration Energy ◽  
Random Wave ◽  
Periodic Signal ◽  
Vibration Energy Harvesting ◽  
Motion Activity

The energy harvested from the renewable energy has been attracting a great potential as a source of electricity for many years; however, several challenges still exist limiting output performance, such as the package and low frequency of the wave. Here, this paper proposed a bistable vibration system for harvesting low-frequency renewable energy, the bistable vibration model consisting of an inverted cantilever beam with a mass block at the tip in a random wave environment and also develop a vibration energy harvesting system with a piezoelectric element attached to the surface of a cantilever beam. The experiment was carried out by simulating the random wave environment using the experimental equipment. The experiment result showed a mass block’s response vibration was indeed changed from a single stable vibration to a bistable oscillation when a random wave signal and a periodic signal were co-excited. It was shown that stochastic resonance phenomena can be activated reliably using the proposed bistable motion system, and, correspondingly, large-scale bistable responses can be generated to realize effective amplitude enlargement after input signals are received. Furthermore, as an important design factor, the influence of periodic excitation signals on the large-scale bistable motion activity was carefully discussed, and a solid foundation was laid for further practical energy harvesting applications.

Sign in / Sign up

Export Citation Format

Share Document