Meta-Structure Hull Design with Periodic Layered Phononic Crystals Theory for Wide-Band Low-Frequency Sound Insolation.
Meta-Structure Hull Design with Periodic Layered Phononic Crystals Theory for Wide-Band Low-Frequency Sound Insolation.
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DOI：
10.3390/ma16124429
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发表时间：
2023-06-16
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影响因子：
--
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中科院分区：
文献类型：
--
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海洋交通工具的船体通常在衰减由其动力系产生的空气传播声学噪声方面非常有效。然而，传统的船体设计在衰减宽带低频噪声方面通常不是非常有效。元结构的概念提供了一个机会，设计层压船体结构，以解决这一问题。本研究提出一种新的元结构层状船体概念，利用周期性层状声子晶体优化船体结构气固侧的声隔离性能。声传输性能的评估使用的传输矩阵，声透射率，和隧道频率。所提出的薄的固体-空气夹层超结构船体的理论和数值模型表明在50-800 Hz频带内的超低传输，并具有两个预测的尖锐隧穿峰。相应的3D打印样品通过实验验证了189 Hz和538 Hz处的隧穿峰值，分别具有0.38和0.56的传输幅度，这些值之间的频带显示出宽带缓解。这种元结构设计的简单性提供了一种方便的方式来实现海洋工程设备的低频声带滤波，因此，一种有效的低频声缓解技术。
The hulls of marine vehicles are generally very effective at attenuating airborne acoustic noise generated by their powertrains. However, conventional hull designs are generally not very effective at attenuating wide-band low-frequency noise. Meta-structure concepts offer an opportunity for the design of laminated hull structures tailored to address this concern. This research proposes a novel meta-structure laminar hull concept using periodic layered Phononic crystals to optimize the sound insolation performance on the air–solid side of the hull structure. The acoustic transmission performance is evaluated using the transfer matrix, the acoustic transmittance, and the tunneling frequencies. The theoretical and numerical models for a proposed thin solid-air sandwiched meta-structure hull indicate ultra-low transmission within a 50-to-800 Hz frequency band and with two predicted sharp tunneling peaks. The corresponding 3D-printed sample experimentally validates the tunneling peaks at 189 Hz and 538 Hz, with 0.38 and 0.56 transmission magnitudes, respectively, with the frequency band between those values showing wide-band mitigation. The simplicity of this meta-structure design provides a convenient way to achieve acoustic band filtering of low frequencies for marine engineering equipment and, accordingly, an effective technique for low-frequency acoustic mitigation.
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影响因子：
3.4
作者：
Almeida, V. F.;Lima, V. D.;Arruda, J. R. F.
通讯作者：
Arruda, J. R. F.
影响因子：
--
作者：
Cervenka, Milan;Bednarik, Michal
通讯作者：
Bednarik, Michal
影响因子：
4.7
作者：
Lee, Il Kyu;Seung, Hong Min;Kim, Yoon Young
通讯作者：
Kim, Yoon Young
影响因子：
4.1
作者：
Li, Yingli;Yan, Gengwang
通讯作者：
Yan, Gengwang
DOI：
10.1016/j.ijmecsci.2019.105330
发表时间：
2020-03-01
影响因子：
7.3
作者：
Liu, Yang;Du, Jingtao
通讯作者：
Du, Jingtao