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首页> 外文期刊>Archives of acoustics >CALCULATION OF THE ACOUSTIC RADIATION OF A PARALLELEPIPEDIC STRUCTURE BY USING ACCELERATION MEASUREMENTS: PART 2: Determination of the acoustic radiation contribution of each vibrating side
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CALCULATION OF THE ACOUSTIC RADIATION OF A PARALLELEPIPEDIC STRUCTURE BY USING ACCELERATION MEASUREMENTS: PART 2: Determination of the acoustic radiation contribution of each vibrating side

机译：通过使用加速度测量来计算平行电子结构的声辐射：第2部分：确定每个振动侧的声辐射贡献

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摘要

In the case of an existing machine, it is important to know the contribution of each part of the machine to the total acoustic radiation. One can thus identify main phenomena and estimate the gain earned by such or such way of noise reduction. A simple calculation software based on the vibrating measurements on the machine body is proposed to reply there. The theory has been presented in the first part of the article. The software has been used in the case of the radiation of a rectangular box, located on a rigid baffle, with two vibrating faces. The calculated and measured pressure at one point is similar in the [0-3000] Hz frequency range except in some narrow frequency ranges. The measured and calculated acoustic power does not present such zones, and the contribution of each plates to the total acoustic radiation can be obtained from the calculation of partial and total acoustic powers on the [0-4000] Hz frequency range. In the chosen experimental case, the calculation of total and partial acoustic powers based on the only vibrating data knowledge, can be a performant tool for vibroacoustic diagnostic.
机译：对于现有机器，重要的是要知道机器各部分对总声辐射的影响。因此，人们可以识别主要现象，并估计通过这种或多种降噪方法获得的增益。提出了一个简单的基于车身振动测量的计算软件来对此进行回答。该理论已在文章的第一部分中介绍过。该软件用于辐射位于刚性挡板上的带有两个振动面的矩形盒。在[0-3000] Hz频率范围内，一点处的计算和测量压力相似，但在某些较窄的频率范围内。测量和计算的声功率不存在此类区域，并且可以从[0-4000] Hz频率范围内的部分和总声功率的计算中获得每个板对总声辐射的贡献。在所选的实验情况下，基于唯一的振动数据知识来计算总声功率和部分声功率，可以成为进行振动声诊断的有效工具。

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