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局域共振型声子晶体板缺陷态带隙及其俘能特性研究

卢一铭 曹东兴 申永军 陈许敏

卢一铭, 曹东兴, 申永军, 陈许敏. 局域共振型声子晶体板缺陷态带隙及其俘能特性研究[J]. 力学学报, 2021, 53(4): 1114-1123. doi: 10.6052/0459-1879-20-436
引用本文: 卢一铭, 曹东兴, 申永军, 陈许敏. 局域共振型声子晶体板缺陷态带隙及其俘能特性研究[J]. 力学学报, 2021, 53(4): 1114-1123. doi: 10.6052/0459-1879-20-436
Lu Yiming, Cao Dongxing, Shen Yongjun, Chen Xumin. STUDY ON THE BANDGAPS OF DEFECT STATES AND APPLICATION OF ENERGY HARVESTING OF LOCAL RESONANT PHONONIC CRYSTAL PLATE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(4): 1114-1123. doi: 10.6052/0459-1879-20-436
Citation: Lu Yiming, Cao Dongxing, Shen Yongjun, Chen Xumin. STUDY ON THE BANDGAPS OF DEFECT STATES AND APPLICATION OF ENERGY HARVESTING OF LOCAL RESONANT PHONONIC CRYSTAL PLATE[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(4): 1114-1123. doi: 10.6052/0459-1879-20-436

局域共振型声子晶体板缺陷态带隙及其俘能特性研究

doi: 10.6052/0459-1879-20-436
基金项目: 1)国家自然科学基金(11972051);国家自然科学基金(11874011);石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室开放课题
详细信息
    作者简介:

    2)曹东兴, 教授, 主要研究方向: 振动能量采集. E-mail: caostar@bjut.edu.cn

    通讯作者:

    曹东兴

  • 中图分类号: O322

STUDY ON THE BANDGAPS OF DEFECT STATES AND APPLICATION OF ENERGY HARVESTING OF LOCAL RESONANT PHONONIC CRYSTAL PLATE

  • 摘要: 设计了一种由圆柱形散射体嵌入环氧树脂基体而组成的周期阵列局域共振型声子晶体板结构, 分析了其平直带区域以及缺陷态的能量集中特性, 并研究了其振动能量采集特性. 首先基于超元胞法结合有限元方法分析了5 $\times$ 5完美声子晶体结构和缺陷态声子晶体结构的能带曲线和能量传输特性; 考虑点缺陷局域共振声子晶体结构的能量集中特性, 利用压电材料代替超元胞中某点的散射体材料引入点缺陷, 分析其振动能量采集特性, 结果表明单个5 $\times$ 5点缺陷超胞结构共振频带较窄; 为提升俘能效率, 提出两种由3个具有不同缺陷态数量和构型的5 $\times$ 5超元胞结构并联而成的5 $\times$ 15声子晶体板结构, 机电耦合特性分析结果表明: 所提出的局域共振型声子晶体板结构克服了单个点缺陷超胞结构缺陷模过少、共振频带过窄的局限性, 拓宽了俘能器的工作频带, 提高了输出电压; 此外, 引入不同的缺陷态数量和构型, 可以进一步拓宽俘能带宽, 实现更好的俘能效果.

     

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出版历程
  • 收稿日期:  2020-04-25
  • 刊出日期:  2021-04-10

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