基于统计能量法的铝板隔声量分析

发布时间：2018-05-04 16:53

本文选题：铝板 + 隔声量　；参考：《应用力学学报》2017年04期

【摘要】：为研究单双层铝板的隔声性能,基于VA-ONE平台建立了单双层铝板隔声计算模型,利用统计能量法对其进行高频段的隔声量仿真计算,并与实测值进行了对比,在125Hz~4000Hz频域内,统计能量法的隔声量计算值与实测数据基本吻合。进一步研究了板厚、材质、空气夹层厚度、吸声材料对单双层铝板隔声性能的影响。研究结果表明:不同厚度单层均质铝板隔声量基本符合均质板的隔声规律;在630Hz~4000Hz频域内,空气夹层厚度每增加50mm,隔声量提高约1dB;等厚度玻璃钢及铝蜂窝板比铝板具有更好的隔声性能;在对能量输入贡献较大的结构中铺设吸声性能较好的材料可以获得更好的隔声效果;玻璃纤维能够增强聚氨酯的吸声性能。实际工程中,需合理配置板厚、空气夹层厚度、隔板材料、吸声材料的关系,方可获得较好的隔声性能和经济性,研究结果对船舶舱室降噪设计提供了参考依据。
[Abstract]:In order to study the sound insulation performance of single and double aluminum plate, a sound insulation calculation model of single and double aluminum plate was established based on VA-ONE platform. The sound insulation of single and double aluminum plate was simulated by statistical energy method, and compared with the measured value in 125Hz~4000Hz frequency domain. The calculated results of the statistical energy method are in good agreement with the measured data. The effects of plate thickness, material, air sandwich thickness and sound absorption material on the sound insulation properties of single and double layer aluminum plate were further studied. The results show that the sound insulation of monolayer homogeneous aluminum plate with different thickness basically accords with the sound insulation law of homogeneous aluminum plate, and in 630Hz~4000Hz frequency domain, The sound insulation of FRP and Al honeycomb plate of equal thickness is better than that of aluminum plate, and the sound insulation of FRP and Al honeycomb plate is better than that of aluminum plate with an increase of 50 mm in thickness of air interlayer. The better sound insulation effect can be obtained by laying the materials with better sound absorption property in the structure which contributes more to the energy input, and the sound absorption property of polyurethane can be enhanced by glass fiber. In practical engineering, it is necessary to reasonably configure the thickness of plate, the thickness of air interlayer, the material of diaphragm and the material of sound absorption in order to obtain better sound insulation performance and economy. The research results provide a reference basis for the design of ship cabin noise reduction.
【作者单位】：武汉理工大学能源与动力工程学院;船舶动力系统运用技术交通行业重点实验室;
【基金】：国家自然科学基金(51079118;51279148) 武汉理工大学自主创新研究基金(175205008)
【分类号】：O42

【参考文献】