Optimization design and experimental verification of track nonlinear energy sink for vibration control under seismic excitation

2017 ◽  
Vol 24 (12) ◽  
Author(s):  
Xilin Lu ◽  
Zhongpo Liu ◽  
Zheng Lu
Keyword(s):  
Vibration Control ◽  
Experimental Verification ◽  
Optimization Design ◽  
Nonlinear Energy Sink ◽  
Seismic Excitation ◽  
Energy Sink ◽  
Nonlinear Energy

scholarly journals Optimal Design of Bistable Nonlinear Energy Sink Based on Global Vibration Control

2021 ◽  
Author(s):  
Guo-Xu Wang ◽  
Hu Ding ◽  
Li-Qun Chen
Keyword(s):  
Vibration Control ◽  
Optimization Design ◽  
Nonlinear Energy Sink ◽  
Mass Ratio ◽  
Multi Objective Optimization ◽  
Vibration Mitigation ◽  
Multi Objective ◽  
Main System ◽  
Energy Sink ◽  
Nonlinear Energy

Abstract Although a linear vibration absorber (LVA) or nonlinear energy sink (NES) can effectively mitigate the vibration of the main system in harmonic excitation, the amplitude of the absorber can be very large. Using the single-objective differential evolutionary (DE) algorithm, this paper pioneers the global control of the main system and a bistable NES to achieve decent vibration mitigation effects and decrease the global response of the system. Using the multi-objective DE algorithms and comparing the optimization results of the LVA, this paper proposes multi-objective and multi-parameter design criteria of a bistable NES. The mass ratio, the displacement amplitude, and the mechanical energy are optimization goals. The results show that the maximum amplitude of the main system and the absorber can be controlled at the same level, and the global control strategy does not change the resonance frequency of the main system. Compared with the LVA, the bistable NES has similar vibration mitigation effects with the variation of the mass ratio in the multi-objective optimization. However, the bistable NES can achieve better control over a larger spring stiffness range. Therefore, through single- and multi-objective optimization design, this paper proves the superiority of the bistable NES in the vibration mitigation. Meanwhile, this paper provides an optimization design method for global vibration control.

Nonlinear vibration control of a cantilevered fluid-conveying pipe using the idea of nonlinear energy sink

2018 ◽  
Vol 95 (2) ◽  
pp. 1435-1456 ◽  
Author(s):  
K. Zhou ◽  
F. R. Xiong ◽  
N. B. Jiang ◽  
H. L. Dai ◽  
H. Yan ◽  
...  
Keyword(s):  
Vibration Control ◽  
Nonlinear Vibration ◽  
Nonlinear Energy Sink ◽  
Nonlinear Vibration Control ◽  
Energy Sink ◽  
Nonlinear Energy

Vibration control of a nonlinear beam with a nonlinear energy sink

2015 ◽  
Vol 83 (1-2) ◽  
pp. 1-22 ◽  
Author(s):  
M. Kani ◽  
S. E. Khadem ◽  
M. H. Pashaei ◽  
M. Dardel
Keyword(s):  
Vibration Control ◽  
Nonlinear Energy Sink ◽  
Nonlinear Beam ◽  
Energy Sink ◽  
Nonlinear Energy

scholarly journals Integration of Geometrical and Material Nonlinear Energy Sink with Piezoelectric Material Energy Harvester

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Ye-Wei Zhang ◽  
Chuang Wang ◽  
Bin Yuan ◽  
Bo Fang
Keyword(s):  
Vibration Control ◽  
Energy Harvester ◽  
Mechanical Energy ◽  
Piezoelectric Element ◽  
Nonlinear Energy Sink ◽  
Primary System ◽  
Hysteresis Behavior ◽  
Energy Sink ◽  
Material Nonlinear ◽  
Nonlinear Energy

This paper presents a novel design by integrating geometrical and material nonlinear energy sink (NES) with a piezoelectric-based vibration energy harvester under shock excitation, which can realize vibration control and energy harvesting. The nonlinear spring and hysteresis behavior of the NES could reflect geometrical and material nonlinearity, respectively. Two configurations of the piezoelectric device, including the piezoelectric element embedded between the NES mass and the single-degree-of-freedom system or ground, are utilised to examine the energy dissipated by damper and hysteresis behavior of NES and the energy harvested by the piezoelectric element. Similar numerical research methods of Runge-Kutta algorithm are used to investigate the two configurations. The energy transaction measure (ETM) is adopted to examine the instantaneous energy transaction between the primary and the NES-piezoelectricity system. And it demonstrates that the dissipated and harvested energy transaction is transferred from the primary system to the NES-piezoelectricity system and the instantaneous transaction of mechanical energy occupies a major part of the energy of transaction. Both figurations could realize vibration control efficiently.

Suppression of Limit Cycle Oscillations in a Van der Pol Oscillator by Means of a Passive Nonlinear Energy Sink

2005 ◽  
Author(s):  
Young S. Lee ◽  
Alexander F. Vakakis ◽  
Lawrence A. Bergman ◽  
D. Michael McFarland
Keyword(s):  
Vibration Control ◽  
Limit Cycle ◽  
Nonlinear Energy Sink ◽  
Van Der Pol Oscillator ◽  
Numerical Continuation ◽  
Parameter Study ◽  
Limit Cycle Oscillations ◽  
Van Der Pol ◽  
Energy Sink ◽  
Nonlinear Energy

We present a study of passive but efficient vibration control, wherein a so-called nonlinear energy sink (NES) completely eliminates the limit cycle oscillations (LCOs) of a van der Pol oscillator. We first perform a parameter study in order to get overall understanding of responses with respect to parameters. Then, we establish a slow flow dynamics model to perform analytical study of the suppression mechanism which corresponds to classical nonlinear energy pumping, i.e., passive, broadband, and targeted energy transfer through 1:1 resonance capture. Utilizing the method of numerical continuation of equilibrium, we also study the bifurcation of the steady state solutions. It turns out that the system may have either subcritical or supercritical LCOs, and that for some parameter domain the LCOs are completely eliminated. This suggests applicability of the NES to vibration control in self-excited systems.

scholarly journals Passive fluid-induced vibration control of viscoelastic cylinder using nonlinear energy sink

2022 ◽  
Vol 81 ◽  
pp. 103116
Author(s):  
Mohammadali Nasrabadi ◽  
Andrei Vladimirovich Sevbitov ◽  
Vahid Arab Maleki ◽  
Narges Akbar ◽  
Ilghar Javanshir
Keyword(s):  
Vibration Control ◽  
Nonlinear Energy Sink ◽  
Viscoelastic Cylinder ◽  
Energy Sink ◽  
Nonlinear Energy

scholarly journals Variable pitch spring for nonlinear energy sink: Application to passive vibration control

2018 ◽  
Vol 233 (2) ◽  
pp. 611-622 ◽  
Author(s):  
Donghai Qiu ◽  
Manuel Paredes ◽  
Sébastien Seguy
Keyword(s):  
Vibration Control ◽  
Nonlinear Energy Sink ◽  
Displacement Function ◽  
Generic Model ◽  
Primary System ◽  
Passive Vibration Control ◽  
Variable Pitch ◽  
Energy Sink ◽  
Force Displacement ◽  
Nonlinear Energy

This paper aims to propose a generalized methodology for designing a novel nonlinear energy sink with variable pitch springs. To this end, a generic model of the nonlinear energy sink system providing the nonlinearity of pure cubic stiffness is introduced. Key features of the model include: (i) specifically sizing two variable pitch springs to provide the force polynomial components with only linear and cubic terms; (ii) pre-compressing two springs at the transition point to produce smooth nonlinear force characteristics; (iii) adding a negative stiffness mechanism to counterbalance the linear term. To generate the variable pitch spring, design parametrization is implemented. The type of shape and the pitch distribution adopted for the spring are shown to fit the objective force–displacement function well. To validate the concept, a special sized nonlinear energy sink system is developed. Identification of the force–displacement relation and experiments for the whole system embedded on an electrodynamic shaker are studied. The results show that this nonlinear energy sink can not only output the anticipated nonlinearity, but can also produce energy pumping to protect the primary system in a large band of frequencies, thus making it practical for the application of passive vibration control.

Sign in / Sign up

Export Citation Format

Share Document