不同参数对压缩机壳体噪声辐射的数值分析.pdf

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2007年 10月噪声与振动控制第 5期
文章编号: 1006 - 1355 (2007) 05 - 0128 - 04
不同参数对压缩机壳体噪声辐射的数值分析
季晓明 1 , 孟晓宏 2 , 金涛 1, 2
(1. 丽水学院机械工程系,浙江丽水 323000; 2. 浙江大学化工机械研究所,杭州 310027)
摘要:压缩机的噪声辐射是通过壳体的振动辐射出去,为了降低压缩机的噪声,并进一步优化壳体的声学特
性,利用数值模拟方法,在合理简化模型的基础上,进行了壳体模态分析。然后,研究不同的参数(泵体支撑方式,
集中力作用方向,壳体形状、厚度和阻尼)对壳体噪声辐射的影响,给出有效降低壳体噪声辐射的方法,其分析结果
给压缩机壳体的设计与优化提供重要的参考依据。
关键词:振动与波; 压缩机; 壳体; 噪声辐射; 数值分析
中图2分2类号: TH45; TB535 文献标识码: A
Num er ica l Ana lysis pressor Shell No ise Rad ia tion
w ith D ifferen t Param eters
J I X iao m ing1 , M EN G X iao hong2 , J IN Tao1, 2
(1. Department ofMechantronic Engineering, L ishui University, L ishui Zhejiang 323000, China;
(2. Chem icalMechanical Institute of Zhejiang University, Hangzhou 310027, China)
Abstract: p ressor noise radiated by shell vibration. Therefore, based on the reasonable
model, shell modes were extracted and app lied to numerical simulation method for noise reduction of
comp ressor and imp rovement of shell acoustic performance. Then, a number of effects were studied, in
cluding the support method between shell and pump, the direction of concentrated force, and the shape
and thickness and damp of shell. Some methods which can reduce the noise radiation of shell effectively
were given out.
Key words: vibration and wave; comp ressor; shell; noise radiation; numerical analysis
冰箱压缩机的噪声是衡量压缩机品质的主要指壳体的厚度,阻尼,形状,