穿孔管消声器声学特性的有限元分析

徐贝贝;季振林

振动与冲击 ›› 2009, Vol. 28 ›› Issue (9) : 112-115.

PDF(1179 KB)
PDF(1179 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (9) : 112-115.
论文

穿孔管消声器声学特性的有限元分析

  • 徐贝贝,季振林
作者信息 +

FINITE ELEMENT ANALYSIS OF ACOUSTIC ATTENUATION PERFORMENCE OF PERFORATED TUBE SILENCERS

  • XU Bei-bei, JI Zhen-lin
Author information +
文章历史 +

摘要

三维有限元法被发展用于预测和分析穿孔管消声器的声学性能。直通穿孔管消声器和三通穿孔管消声器传递损失的有限元计算结果与实验测量结果吻合良好,表明了三维有限元法预测穿孔管消声器声学性能的适用性和精度。进而有限元法被用于研究几何结构对三通穿孔管消声器声学性能的影响,结果表明,中间管插入端腔会使共振频率向低频偏移,在三通穿孔管消声器的右侧增加端部共振器能获得良好低频消声效果。

Abstract

Three-dimensional finite element method is developed to predict and analyze the acoustic attenua-tion characteristics of perforated tube silencers. Comparisons of transmission loss predictions with experimental results for straight-through perforated tube silencers and three-pass perforated tube silencer illustrated that the finite element method can predict acoustic attenuation characteristics of perforated tube silencers accurately. The finite element method is then used to investigate the effects of geometrical parameters on the transmission loss of three-pass perforated tube silencer. The duct extensions into the chambers lead to lower resonant frequencies. To improve the low frequency acoustic attenuation of typical three-pass perforated tube silencer, end-resonator may be added on the right side of three-pass perforated tube silencer.

关键词

噪声控制 / 消声器 / 穿孔管 / 有限元法 / 消声性能

Key words

noise control / silencer / perforated tube / finite element method / acoustic attenuation performance

引用本文

导出引用
徐贝贝;季振林. 穿孔管消声器声学特性的有限元分析[J]. 振动与冲击, 2009, 28(9): 112-115
XU Bei-bei;JI Zhen-lin. FINITE ELEMENT ANALYSIS OF ACOUSTIC ATTENUATION PERFORMENCE OF PERFORATED TUBE SILENCERS[J]. Journal of Vibration and Shock, 2009, 28(9): 112-115
中图分类号: TK421   

PDF(1179 KB)

Accesses

Citation

Detail

段落导航
相关文章

/