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A lightweight adaptive hybrid laminate metamaterial with higher design freedom for wave attenuation

机译：一种轻质自适应混合层压材料的超材料，具有更高的波浪衰减自由度

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摘要

In this paper, we design a lightweight adaptive hybrid laminate metamaterial with higher design freedom for wave attenuation. The adaptive hybrid laminate acoustic metamaterials are composed of carbon-fiber-reinforced polymer (CFRP) and a periodic array of piezoelectric shunting patches attached to the laminate. A comprehensive analytical model is first developed to reveal the tunable wave attenuation capability in regard to the equivalent bending stiffness of lightweight adaptive hybrid laminate metamaterial. The tunable wave attenuation behavior has been confirmed through finite element modeling (FEM). Numerical results demonstrate that the lightweight adaptive hybrid laminate metamaterial with the shunting circuits can remarkably suppress wave propagation compared to the un-shunted case. In addition, the effects of the laminate's parameters as well as the shunting circuits on the bandgap's location and bandwidth are discussed. By introducing the negative capacitance shunting circuit into the piezoelectric patches, the bandwidth can be enlarged significantly.
机译：在本文中，我们设计了一种轻质自适应杂交层压材料，具有更高的波浪衰减设计自由度。自适应混合层压材料超材料由碳纤维增强聚合物（CFRP）组成，以及连接到层压板的压电旋转贴片的周期性阵列。首先开发了一种综合分析模型，以揭示在轻质自适应混合层压材料的等效弯曲刚度方面的可调谐波衰减能力。通过有限元建模（FEM）确认了可调谐波衰减行为。数值结果表明，与未分流的情况相比，具有分流电路的轻质自适应混合层压材料的超材料可以显着抑制波传播。另外，讨论了层压板参数以及带隙位置和带宽的分流电路的影响。通过将负电容分流电路引入压电贴片，可以显着地放大带宽。

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  • 来源
    《Composite Structures》 |2020年第7期|112230.1-112230.15|共15页
  • 作者

    Xiao X.; He Z. C.; Li Eric; Zhou B.; Li X. K.;

  • 作者单位

    Hunan Univ State Key Lab Adv Design & Mfg Vehicle Body Changsha 410082 Hunan Peoples R China;

    Hunan Univ State Key Lab Adv Design & Mfg Vehicle Body Changsha 410082 Hunan Peoples R China|State Key Hunan Prov Key Lab Vehicle Power & Tran Xiangtan Peoples R China;

    Teesside Univ Sch Sci Engn & Design Middlesbrough Cleveland England;

    Hunan Univ State Key Lab Adv Design & Mfg Vehicle Body Changsha 410082 Hunan Peoples R China|State Key Hunan Prov Key Lab Vehicle Power & Tran Xiangtan Peoples R China;

    Hunan Univ State Key Lab Adv Design & Mfg Vehicle Body Changsha 410082 Hunan Peoples R 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

    Lightweight adaptive hybrid laminate metamaterials; Local resonant bandgap; Electro-mechanical coupling;

    机译：轻量级自适应混合体层压超材料;局部谐振带隙;机电联轴器;

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