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首页> 外文期刊>Composite Structures >Low-frequency sound radiation of infinite orthogonally rib-stiffened sandwich structure with periodic subwavelength arrays of shunted piezoelectric patches
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Low-frequency sound radiation of infinite orthogonally rib-stiffened sandwich structure with periodic subwavelength arrays of shunted piezoelectric patches

机译：带有分频压电贴片的周期亚波长阵列的无限正交肋加筋夹层结构的低频声辐射

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摘要

In order to minimize the low-frequency sound radiation of an infinite orthogonally rib-stiffened sandwich structure, the periodic subwavelength arrays of shunted piezoelectric patches are introduced. Based on the piezoelectric shunt technique and effective medium method, the panels and piezoelectric patches are equivalent to two homogeneous facesheets. Then, considering all the inertia terms of the rib-stiffeners, a complete theoretical model is built for harmonic point force excitation by using Kirchhoff's thin plate theory. The vibration displacements of the facesheets in wavenumber space are solved by Fourier transform technique to complete the prediction of vibroacoustic responses. Furthermore, the correctness and effectiveness of the present model are verified by sequentially using published analytical models, simulation results and theoretical predictions in strict accordance with two prerequisites. At last, the influence laws of key influencing parameters on the research structure are investigated. All the results demonstrate that the proposed structure can effectively attenuate the structural radiation.
机译：为了最小化无限正交肋加强的夹心结构的低频声辐射，引入了分流压电贴片的周期性亚波长阵列。基于压电分流技术和有效介质方法，面板和压电贴片相当于两个均质的面板。然后，考虑肋骨加劲肋的所有惯性项，利用基尔霍夫薄板理论建立了一个完整的谐波点力激励理论模型。利用傅立叶变换技术求解了面板在波数空间中的振动位移，从而完成了对振动响应的预测。此外，严格按照两个前提条件，依次使用已发布的分析模型，仿真结果和理论预测，验证了本模型的正确性和有效性。最后，研究了关键影响参数对研究结构的影响规律。所有结果表明，所提出的结构可以有效地衰减结构辐射。

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  • 来源
    《Composite Structures》 |2018年第3期|144-156|共13页
  • 作者

    Zhang Zhifu; Li Shande; Huang Qibai;

  • 作者单位

    Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Hubei, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, State Key Lab Digital Mfg Equipment & Technol, Wuhan 430074, Hubei, 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

    Sound radiation; Sandwich structure; Multimode resonances; Piezoelectric patch; Shunt circuit;

    机译：声辐射;夹心结构;多模共振;压电膜片;并联电路;

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