噪声与振动控制2016，Vol.36Issue(4)：58-62,5.DOI:10.3969/j.issn.1006-1335.2016.04.012
隔声材料排布顺序对复合板材隔声特性的影响
Influence of the Insulation Material Arrangement on Sound Insulation Properties of Composite Sheets
徐磊 1张学飞 1王瑞乾 1赵阳宇 2李晔1
作者信息
- 1. 常州大学 城市轨道交通学院，江苏 常州 213164
- 2. 常州西南交通大学 轨道交通研究院，江苏 常州 213164
- 折叠
摘要
Abstract
The insulation performance of the flat roof composite structure of a high-speed train is tested. It is found that when the positions of the two insulation pads in the structure are exchanged, the sound insulation performance of the composite structure will change significantly. To solve this problem, influences of the arrangement order of the insulation materials in a double-layer composite sheet and a triple-layer composite sheet on their sound insulation performances are studied respectively based on statistical energy method. Results show that for the double-layer composite sheet, the material layer with high insulation capacity should be arranged on the side close to the sound source and the layer with low insulation capacity should be arranged far from the sound source so as to raise the sound insulation of the overall structure significantly, especially in the low frequency range. For the triple-layer composite structure, the material layer with highest insulation capacity should be arranged on the side close to the sound source, the layer with secondary high insulation capacity should be arranged on the side far from the sound source, and the layer with lowest insulation capacity should be placed in the middle of the composite sheet so as to raise the sound insulation of the overall structure significantly, as well as to raise the sound insulation capacity in the medium and low frequency range. This work is of reference significance for further improvement of the sound insulation properties of composite sheets.关键词
声学/高速列车/隔声/统计能量法/复合板材/排布顺序Key words
acoustics/high-speed train/sound insulation/SEA/composite sheet/arrangement order分类
交通工程引用本文复制引用
徐磊,张学飞,王瑞乾,赵阳宇,李晔..隔声材料排布顺序对复合板材隔声特性的影响[J].噪声与振动控制,2016,36(4):58-62,5.
