针对泡沫铝三明治板隔声性能较难评估的问题，提出简单可行的基于统计能量评估方法。以泡沫铝三明治板结构为研究对象，基于统计能量法对其隔声性能进行数值计算，并与实验结果进行比较分析，验证了数值计算方法的可行性。利用此方法研究泡沫铝三明治板结构的夹芯泡沫铝厚度、孔隙率以及增加空气层对其隔声性能的影响，发现当夹层泡沫铝厚度为10 mm、孔隙率为70%时三明治板隔声效果最佳，泡沫铝厚度平均每增加10 mm其隔声量增加2 dB，同时增加空气层可以增加其隔声量。
In view of the difficulty in evaluating the sound insulation performance of aluminum foam sandwich panels, a simple and feasible evaluation method based on statistical energy is proposed. Taking the aluminum foam sandwich plate structure as the research object, the sound insulation performance was numerically calculated based on the statistical energy method, and the results were compared with the experimental results to verify the feasibility of the numerical calculation method. Using this method, the influence of sandwich aluminum foam thickness, porosity and increasing air layer on the sound insulation performance of aluminum foam sandwich panel structure was studied. It was found that when the sandwich aluminum foam thickness was 10 mm and the porosity was 70 %, the sound insulation effect of sandwich panel was the best. The sound insulation increased by 2 dB per 10 mm increase in the thickness of aluminum foam on average, and the increase in air layer could increase the sound insulation.
2023,45(15): 65-70 收稿日期：2022-07-04
DOI：10.3404/j.issn.1672-7649.2023.15.012
分类号：U667
作者简介：代昌明(1998-),男,硕士研究生,研究方向为结构与噪声分析
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