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首页> 外文期刊>Applied Mathematical Modelling >Simultaneous energy harvesting and vibration isolation via quasi-zero-stiffness support and radially distributed piezoelectric cantilever beams
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Simultaneous energy harvesting and vibration isolation via quasi-zero-stiffness support and radially distributed piezoelectric cantilever beams

机译：通过准零刚性支撑和径向分布式压电悬臂梁同时能量收集和振动隔离

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摘要

Most of the existing energy harvesters are based on vibration amplification, which inevitably causes large disturbing force transmitted to the base. In this paper, a novel energy harvesting device is proposed based on vibration localization, through which the force transmitted to the base can be significantly reduced, thereby achieving simultaneous energy harvesting and vibration isolation. The proposed device is composed of a quasi-zero-stiffness (QZS) support which can greatly lower the beginning frequency of vibration isolation region, and several radially distributed piezoelectric cantilever beams by which the vibrational energy is localized and harvested. The electromechanical coupled equations are formulated starting from the most elementary mechanical and electrical knowledge. The harmonic balance method is employed to analyze the dynamic response and output voltage, accompanied by the verification through numerical simulations. The non-dimensional output power and the force transmissibility are comprehensively studied with tuning key parameters to investigate the crucial characteristics of the proposed system. The results indicate that the energy harvesting region does lie in the vibration isolation region and the former can be flexibly tuned within the latter by altering the mechanical parameters of the piezoelectric cantilever beam; the peak power and energy harvesting bandwidth can also be tuned by altering the electrical parameters; most importantly, the enhancement of the energy harvesting performance can be achieved with almost no sacrifice of the vibration isolation performance.
机译：大多数现有的能量收割机基于振动放大，这不可避免地导致传递到底座的大的令人不安的力。本文基于振动定位提出了一种新型能量收集装置，通过该振动定位，可以显着降低传递到底座的力，从而实现同时能量收集和振动隔离。该提出的装置由准零刚度（QZS）支撑件组成，其可以大大降低振动隔离区域的开始频率，以及几个径向分布的压电悬臂梁，振动能量是局部化和收获的。机电耦合方程从最基本的机械和电气知识开始。采用谐波平衡方法来分析动态响应和输出电压，通过数值模拟验证。通过调谐关键参数，综合研究了非尺寸输出功率和力传输性，以研究所提出的系统的关键特性。结果表明，通过改变压电悬臂梁的机械参数，能量收集区域可以位于隔振区域中，并且可以通过改变压电悬臂梁的机械参数在后者内灵活调谐;还可以通过改变电气参数来调整峰值功率和能量收集带宽;最重要的是，可以通过几乎没有牺牲振动隔离性能来实现能量收集性能的增强。

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  • 来源
    《Applied Mathematical Modelling》 |2021年第12期|152-169|共18页
  • 作者

    Chaoran Liu; Rui Zhao; Kaiping Yu; Heow Pueh Lee; Baopeng Liao;

  • 作者单位

    Department of Astronautic Science and Mechanics Harbin Institute of Technology Harbin 150001 PR China Department of Mechanical Engineering National University of Singapore Singapore 117575 Singapore;

    Department of Astronautic Science and Mechanics Harbin Institute of Technology Harbin 150001 PR China;

    Department of Astronautic Science and Mechanics Harbin Institute of Technology Harbin 150001 PR China;

    Department of Mechanical Engineering National University of Singapore Singapore 117575 Singapore;

    Department of Astronautic Science and Mechanics Harbin Institute of Technology Harbin 150001 PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Energy harvesting; Vibration isolation; Quasi-zero-stiffness; Energy localization;

    机译：能量收集;隔振;准零刚度;能源本地化;

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