混合型空腔结构覆盖层吸声性能研究及其优化设计

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (8) : 217-220.

论文

混合型空腔结构覆盖层吸声性能研究及其优化设计

商超; 张嘉钟; 曹伟; 于开平

作者信息 +

The Absorption Characteristics of Anechoic Coating with Cavity Structure and Optimization of Its Design

SHANG Chao; ZHANG Jia-zhong; Cao Wei; Yu Kai-ping

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文章历史 +

摘要

基于有限元法研究了以空气为背衬的混合型空腔结构覆盖层的吸声特性。建立了具有混合型空腔结构的覆盖层有限元模型，对其进行吸声特性数值仿真分析。结果表明，该空腔结构的吸声特性明显优于相同穿孔率的单腔结构。通过优化设计，进一步提升了混合型空腔结构覆盖层在全频段的吸声性能，并得到了若干覆盖层结构参数影响其吸声性能的规律。

Abstract

The absorption characteristics of the mixed-cavity structure anechoic coating with air backings is studied based on the finite element method. The absorption characteristics of anechoic coating with mixed-cavity structure were studied. The calculation result indicates that the absorption characteristics of this kind of cavity structure are superior to single-cavity structure under the same perforated percentage. Then, the absorption properties of anechoic coating with mixed-cavity structure at full-frequency range were further improved by optimization design. The influence of coating structure parameters on absorption characteristics is studied.

导出引用

商超;张嘉钟;曹伟;于开平. 混合型空腔结构覆盖层吸声性能研究及其优化设计[J]. 振动与冲击, 2011, 30(8): 217-220

SHANG Chao;ZHANG Jia-zhong;Cao Wei;Yu Kai-ping. The Absorption Characteristics of Anechoic Coating with Cavity Structure and Optimization of Its Design[J]. Journal of Vibration and Shock, 2011, 30(8): 217-220