空腔体积分数对水声材料隔声性能影响的研究

详细信息

Effect of Cavity Volume Porosity on Sound Insulation Performance of Acoustic Material

1. Luoyang Ship Material Research Institute, Luoyang 471023, China;
2. School of Material Science and Engineering, Zhengzhou University, Zhengzhou 450001, China

摘要: 探讨了空气腔体积分数对水声材料隔声性能的影响。结果表明,空气腔体积分数相同,球型空气腔的样品在压力下隔声性能的下降幅度低于圆台型空气腔样品的;对于球型空气腔,增加样品的空气腔体积分数,可提高低压下样品的隔声性能,空气腔体积分数为19.92%的样品,高压下隔声性能较为优异。
- 空气腔体积分数 /
- 水声材料 /
- 隔声性能
Abstract: Effect of the cavity volume porosity on sound insulation performance of acoustic material was researched. The results showed that when the spherical cavity sample and the truncated cone sample were of the same cavity volume,the decrease amplitude of the sound insulation performance in the spherical cavity sample was lower than that of the truncated cone one. The sound insulation performance could be improved by applying higher cavity volume porosity under low hydraulic-pressure for the spherical cavity; for the high water pressure,the acoustic material with a 19. 92% cavity volume porosity performed better in sound insulation.
- cavity volume porosity /
- acoustic material /
- sound insulation performance