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

机译:用压电材料能量收割机集成几何和材料非线性能量水槽

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摘要

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.
机译:本文通过将几何和材料非线性能量水槽(NES)与震动激励下的压电基振动能量收割机集成,介绍了一种新颖的设计,可以实现振动控制和能量收集。 NE的非线性弹簧和滞后行为可以分别反映几何和材料非线性。使用包括嵌入NES质量和自由度系统或地面之间的压电元件的压电器件的两种配置,用于检查由NE的阻尼器和NE的滞后行为散发的能量和由压电收获的能量元素。类似的runge-kutta算法的数值研究方法用于研究两种配置。采用能量交易措施(ETM)检查初级和NES压电系统之间的瞬时能量交易。并且它表明,消散和收获的能量交易从主要系统转移到NES-压电系统,并且机械能的瞬时交易占据交易能量的主要部分。这两者都可以有效地实现振动控制。

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