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首页> 外文会议>Congress of the International Council of the Aeronautical Sciences; 20060903-08; Hamburg(DE) >IMPROVEMENT OF THE SOUND TRANSMISSION LOSS OF PANELS BY MEANS OF ACOUSTICALLY TUNED RESONATORS
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IMPROVEMENT OF THE SOUND TRANSMISSION LOSS OF PANELS BY MEANS OF ACOUSTICALLY TUNED RESONATORS

机译：通过声调谐谐振器改善面板的声音传输损失

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摘要

When a panel is excited, either structurally or acoustically, sound is radiated from the panel. Previous research by the author has shown that tuned acoustic tube resonators can be used to reduce the radiated sound. A one-dimensional analytical model model was validated by experiments in an impedance tube and good agreement was found between model and measurements. In this paper, the model is extended to describe the, sound transmitted through a panel with acoustic resonators. Two different configurations are examined: panels with tubes and perforated sandwich panels. To verify whether the one-dimensional analytical models give a good prediction of the sound transmission loss, panels of both configurations were tested. Sound transmission loss measurements were performed by means of the sound intensity method (ISO 15186-1). The measurements showed that the resonators indeed increased the transmission loss compared with the mass law, in the frequency range for which the resonators were tuned. However, the increase was not as large as predicted by the one-dimensional model. Resonators can be applied for various structural parts of an aircraft through which the transmission of sound has to be reduced. The research is performed as part of the EU project FACE (Friendly Aircraft Cabin Environment).
机译：当面板在结构上或声学上被激发时，声音就会从面板上辐射出来。作者先前的研究表明，可使用调谐声管谐振器来减少辐射声。在阻抗管中通过实验验证了一维分析模型模型，并在模型和测量值之间找到了很好的一致性。在本文中，扩展了该模型以描述通过带有声谐振器的面板传输的声音。检查了两种不同的配置：带管的面板和多孔夹心面板。为了验证一维分析模型是否能够很好地预测声传输损耗，对两种配置的面板进行了测试。借助声强法（ISO 15186-1）进行声音传输损耗的测量。测量表明，与质量定律相比，在调谐谐振器的频率范围内，谐振器确实增加了传输损耗。但是，增加的幅度没有一维模型所预测的那么大。谐振器可用于飞机的各种结构部件，通过这些部件必须减少声音的传播。该研究是欧盟项目FACE（友好机舱环境）的一部分。

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