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钢轨吸振器振动能量的多模态压电式俘能研究

钱韦吉 雍胜杰

钱韦吉,雍胜杰. 钢轨吸振器振动能量的多模态压电式俘能研究[J]. 机械科学与技术,2021,40(11):1657-1663 doi: 10.13433/j.cnki.1003-8728.20200274
引用本文: 钱韦吉,雍胜杰. 钢轨吸振器振动能量的多模态压电式俘能研究[J]. 机械科学与技术,2021,40(11):1657-1663 doi: 10.13433/j.cnki.1003-8728.20200274
QIAN Weiji, YONG Shengjie. Research on Multi-modal Piezoelectric Energy Harvesting Technology of Rail Vibration Absorber[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(11): 1657-1663. doi: 10.13433/j.cnki.1003-8728.20200274
Citation: QIAN Weiji, YONG Shengjie. Research on Multi-modal Piezoelectric Energy Harvesting Technology of Rail Vibration Absorber[J]. Mechanical Science and Technology for Aerospace Engineering, 2021, 40(11): 1657-1663. doi: 10.13433/j.cnki.1003-8728.20200274

钢轨吸振器振动能量的多模态压电式俘能研究

doi: 10.13433/j.cnki.1003-8728.20200274
基金项目: 国家自然科学基金项目(51505396)与中国博士后科学基金项目(2016M602711)
详细信息
    作者简介:

    钱韦吉,副教授,博士,研究方向为轨道交通的振动能量回收,qwjst@163.com

  • 中图分类号: TN384

Research on Multi-modal Piezoelectric Energy Harvesting Technology of Rail Vibration Absorber

  • 摘要: 提出一种结合钢轨吸振器与多模态压电式俘能器的新型振动能量回收技术,在有效减轻轨道振动的条件下,回收钢轨吸振器的振动能量为各类轨道监测设备供能。通过建立车轮-轨道-吸振器系统的振动分析模型,研究了能量回收模块对吸振器减振性能的影响规律,并使用谐响应分析研究了能量回收模块的发电能力。分析结果显示,当多模态能量回收装置安装在钢轨吸振器上时,不会对钢轨吸振器的减振性能产生明显影响。并且,多模态结构能有效拓宽0~600 Hz频率范围内的振动能量回收频带,提高振动能量的回收效率。
  • 图  1  轮轨模型

    图  2  细化网格

    图  3  添加能量回收模块的钢轨吸振器

    图  4  螺旋型悬臂梁结构

    图  5  简化的悬臂梁结构

    图  6  压电陶瓷等效电路

    图  7  轮轨系统复模态分析

    图  8  瞬时动态分析结果

    图  9  功率谱密度分析结果

    图  10  振动位移随时间变化曲线

    图  11  能量回收模块分别耦合在钢轨吸振器端面和居中面时承受的最大应力

    图  12  压电陶瓷输出功率随频率变化曲线

    图  13  共振频率分析结果

    表  1  轮轨模型的连接参数

    连接参数X(轴向)Y(竖向)Z(纵向)
    道床支撑刚度/(N·m−1) 5.0 × 107 5.0 × 107 8.9 × 107
    道床支撑阻尼/(N·s·m−1) 4.0 × 104 4.0 × 104 8.9 × 104
    钢轨扣件刚度/(N·m−1) 8.9 × 106 8.9 × 106 4.1 × 107
    钢轨扣件阻尼/(N·s·m−1) 2.1 × 103 2.1 × 103 2.1 × 103
    吸振器刚度/(N·m−1) 1.5 × 107 1.5 × 107 3.0 × 107
    吸振器阻尼/(N·s·m−1) 2.0 × 104 2.0 × 104 2.0 × 104
    下载: 导出CSV

    表  2  轮轨模型的材料参数

    部件 材料密度/(kg·m−3) 弹性模量/GPa 泊松比
    枕木 2400 32.5 0.3
    车轮和钢轨 7800 210 0.3
    下载: 导出CSV

    表  3  轨道振动能量采集模型的材料参数

    名称密度/
    (kg·m−3)
    弹性模
    量/GPa
    长×宽×高/
    mm
    泊松比
    吸振器 7850 210 425 × 45 × 90 0.29
    悬臂梁 8600 134 20 × 5 × 0.8 0.30
    压电片 7600 80 24 × 5 × 0.3 0.36
    质量块 7400 160 20 × 5 × 20 0.24
    注:悬臂梁为螺旋型悬臂梁的末端梁,梁臂间隙为2 mm
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-05-28
  • 网络出版日期:  2021-11-24
  • 刊出日期:  2021-11-05

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