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Design of cylindrical honeycomb sandwich meta-structures for vibration suppression

机译：圆柱形蜂窝夹层结构振动抑制设计

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摘要

In this study, a lightweight cylindrical honeycomb sandwich structure with low-frequency vibration attenuation ability is designed. An analytical model based on Love shell theory is established to investigate the dispersion relations of an orthotropic cylindrical shell with local resonators. The low-frequency band gaps and the presence of negative effective mass density are confirmed analytically. Subsequently, the influences of curvature and orthotropy on wave propagation behavior are discussed and the prediction formula for band gaps is defined for engineering design. To verify the feasibility of the design method, a real cylindrical honeycomb sandwich meta-structure is first designed and fabricated by introducing local resonators into a square honeycomb structure. The forced vibration response of the proposed cylindrical meta-structure is studied using both numerical simulations and experimental validation. Furthermore, a cylindrical meta-structure with a plate inside is studied numerically and experimentally, which confirms its excellent vibration suppression performance in actual applications. This study is of great significance in promoting the application of local resonance meta-structures in engineering field.
机译：在本研究中，设计了具有低频振动衰减能力的轻质圆柱蜂窝夹层结构。建立了一种基于爱壳理论的分析模型，以研究局部谐振器的正交圆柱壳的分散关系。分析地确认低频带间隙和负有效质量密度的存在。随后，讨论了曲率和正交性对波传播行为的影响，并且为工程设计定义了带空隙的预测公式。为了验证设计方法的可行性，首先通过将局部谐振器引入方形蜂窝结构中设计和制造真正的圆柱形蜂窝夹层结构。使用数值模拟和实验验证研究所提出的圆柱形元结构的强制振动响应。此外，数值和实验研究了具有板内部的圆柱形元结构，这在实际应用中确认其优异的振动抑制性​​能。该研究对促进局部谐振元结构在工程领域的应用方面具有重要意义。

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  • 来源
    《Mechanical systems and signal processing》 |2022年第1期|108075.1-108075.21|共21页
  • 作者

    Yang Jin; Xin-Yu Jia; Qian-Qian Wu; Guo-Cai Yu; Xiao-Lei Zhang; Shuai Chen; Lin-Zhi Wu;

  • 作者单位

    Center for Composite Materials Harbin Institute of Technology Harbin 150001 China;

    Key Laboratory of Advanced Ship Materials and Mechanics Harbin Engineering University Harbin 150001 China;

    Center for Composite Materials Harbin Institute of Technology Harbin 150001 China;

    Key Laboratory of Advanced Ship Materials and Mechanics Harbin Engineering University Harbin 150001 China;

    Beijing Institute of Electronic System Engineering Beijing 100854 China;

    Center for Composite Materials Harbin Institute of Technology Harbin 150001 China;

    Center for Composite Materials Harbin Institute of Technology Harbin 150001 China Key Laboratory of Advanced Ship Materials and Mechanics Harbin Engineering University Harbin 150001 China;

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  • 正文语种 eng
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  • 关键词

    Cylindrical mem-structure; Local resonance; Square honeycomb; Band gap; Vibration attenuation;

    机译：圆柱形模拟;局部共振;方蜂窝;乐队差距;振动衰减;

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