A vibratory energy harvesting absorber using integration of a lever-enhanced nonlinear energy sink and a levitation magnetoelectric energy harvester

Zang, Jian; Cao, Runqing; Fang, Bo; Zhang, Yewei

doi:10.1016/j.jsv.2020.115534

Cited by 43 publications

(7 citation statements)

References 42 publications

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“…Results confirm that the integration of vibration suppression and piezoelectric energy harvesting can be enhanced by adjusting cubic nonlinearity. Zang et al (2020) proposed a promising novel device by integrating a lever-type nonlinear energy sink (LNES) and a levitation magnetoelectric energy harvester (LMEH), to discover the effects of closed detached response, primary response, closed detached voltage, and primary voltage on the vibration isolation and energy harvesting. Zou et al (2021) developed a device capable of customizing nonlinear forces.…”

Section: Introductionmentioning

confidence: 99%

Analysis of vibration suppression performance of parallel nonlinear energy sink

Song

Liu

et al. 2022

Journal of Vibration and Control

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With the increase of excitation, the nonlinear energy sink (NES) will cause the controlled system to produce high branch response and lead to sudden failure. Increasing the mass of the NES can prevent the generation of high branch within a certain range, but high-precision instruments such as aerospace have strict requirements for additional mass. A parallel NES (PNES) is proposed to improve the robustness without increasing the mass. The slow flow equations of the system are derived by using complexification-averaging (CX-A) method, and the vibration suppression performance of the PNES is analyzed from the frequency domain. Compared with purely cubic stiffness NES (CNES), it is found that PNES has better performance near the main resonance. And it is not easy to produce high branch response under the same excitation intensity. Finally, the performance of PNES and CNES is compared by numerical method from time domain and energy spectrum. The results show that when PNES is attached, the attenuation time of the controlled system is shorter under impact excitation, much more, the controlled system has a smaller energy amplitude near the main resonance under harmonic excitation.

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Section: Introductionmentioning

confidence: 99%

Analysis of vibration suppression performance of parallel nonlinear energy sink

Song

Liu

et al. 2022

Journal of Vibration and Control

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“…Xiong et al 18 proposed a piezoelectric vibration energy harvester (PVEH), the equivalent circuit model of electromechanical system was deduced, numerical simulation results showed that the PVEH can absorb the vibration of the main structure effectively, and can also collect electricity in a wider frequency range. Zang et al 19 proposed a device by integrating a lever-type nonlinear energy sink (LNES) and a levitation magnetoelectric energy harvester (LNES-LMEH). According to the mathematical model of the 3-DOF system, the influence of different parts of the system on the vibration control effect and energy conversion efficiency of LNES-LMEH was analyzed.…”

Section: Introductionmentioning

confidence: 99%

Study on vibration energy harvesting of offshore platform by energy harvester based on nonlinear energy sink

Chang

Yao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part M:

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Under the impacts of waves and other marine environment, the jacket offshore platform has an obvious vibration and generates lots of energy. Meanwhile, the platform may suffer fatigue damage. The vibration energy harvesting of a jacket offshore platform under random waves with a nonlinear energy sink (NES) was investigated, and a NES-Energy harvester (NES-EH) was then designed by combining an electromagnetic linear generator with the NES. Moreover, the dynamic model of the NES-EH-offshore platform was built, and the electromagnetic damping and stiffness of the energy harvester were optimized by analyzing the energy capture efficiency and root mean square reduction of the platform displacement. The effects of NES nonlinear stiffness and damping, peak period and effective wave height of irregular waves on the capture power and width of the NES-EH were also analyzed. The results show that nonlinear stiffness and damping of the NES impact the energy capturing efficiency of the NES-EH; the smaller the damping and nonlinear stiffness, the higher the power captured by electromagnetic damping in the NES-EH. Compared with NES, the NES-EH system has a better effect on the vibration control of the platform and can better capture considerable vibration energy.

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“…Owing to its broadband energy transfer properties, the NES is suitable for use in energy harvesting and has also exhibited various other useful properties. Different kinds of piezoelectric and magnetoelectric energy harvesters combined with NES have been proposed [18][19][20][21]. The NES was also used in a viscoelastic vibration isolation system, achieving favorable results [22].…”

Section: Introductionmentioning

confidence: 99%

Study on Crack Identification with Responses Modulated by Nonlinear Energy Sink

2022

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Owing to its vibration reduction and indirect signal amplification characteristics, a nonlinear energy sink (NES) is used for crack identification of structures. The equation of a cracked simply supported beam with an NES is derived and the influences of the crack properties on the dynamics of the system are investigated. A pixel method is applied to estimate phase diagram areas and crack parameters are identified based on the geometric features of the phase diagram. It is shown that the phase diagram of the NES varies significantly with crack parameters. This is because of the higher amplitudes generated by the absorbing NES with respect to the primary structure. In addition, the NES can reduce the amplitude of the cracked beam without hindering crack identification. Moreover, through introducing the NES, the system can produce a strongly modulated response, which can be utilized for convenient crack detection. Two sets of crack identification indices are defined for the system, generating a single-period response and a strongly modulated response. Contour maps of identification indices based on the area of phase diagrams are obtained by varying crack location and depth. The crack parameters are identified through the intersection of contour lines.

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A vibratory energy harvesting absorber using integration of a lever-enhanced nonlinear energy sink and a levitation magnetoelectric energy harvester

Cited by 43 publications

References 42 publications

Analysis of vibration suppression performance of parallel nonlinear energy sink

Analysis of vibration suppression performance of parallel nonlinear energy sink

Study on vibration energy harvesting of offshore platform by energy harvester based on nonlinear energy sink

Study on Crack Identification with Responses Modulated by Nonlinear Energy Sink

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