基于模态展开法的二维消声器传递损失分析

林力;张旭;李云;程光旭

振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 161-164,.

PDF(1169 KB)
PDF(1169 KB)
振动与冲击 ›› 2011, Vol. 30 ›› Issue (11) : 161-164,.
论文

基于模态展开法的二维消声器传递损失分析

  • 林力; 张旭; 李云; 程光旭
作者信息 +

Transmission loss analysis of two-dimensional mufflers base on modal expansion method

  • Lin Li; Zhang Xu; Li Yun; Cheng Guang-xu
Author information +
文章历史 +

摘要

运用模态展开法通过求解矩形和圆柱形二维消声器的压力响应函数以及其相应的四极参数,推导了这些消声器模型的传递损失计算模型。采用此模型计算了二维圆柱形消声器的传递损失,并建立了三维有限元模型验证了该模型的正确性。通过与格林函数法比较传递损失能量计算结果,表明在面源尺寸相对较大时,采用该模型具有更高的计算精度。

Abstract

The pressure response functions and the corresponding four-pole parameters of two-dimensional rectangular and cylindrical mufflers have been obtained by modal expansion methods. Thus, transmission loss (TL) calculation model of different shape mufflers has been derived. In order to verify the present calculation model, the TL results of a two-dimensional cylindrical muffler obtained by the proposed model has been verified by comparing with that obtained by the three-dimensional finite element method. It is demonstrated that the proposed model is more computationally efficient than the finite element method with adequate computational accuracy. This model is more accurate if the area of the surface source is comparatively large, compared with the TL results by Green’s function method.

关键词

传递损失 / 四极参数 / 二维消声器 / 模态展开法

Key words

transmission loss / four pole parameters / two-dimensional muffler / modal expansion method

引用本文

导出引用
林力;张旭;李云;程光旭. 基于模态展开法的二维消声器传递损失分析[J]. 振动与冲击, 2011, 30(11): 161-164,
Lin Li;Zhang Xu;Li Yun;Cheng Guang-xu. Transmission loss analysis of two-dimensional mufflers base on modal expansion method[J]. Journal of Vibration and Shock, 2011, 30(11): 161-164,

PDF(1169 KB)

Accesses

Citation

Detail

段落导航
相关文章

/