| 冰箱压缩机机壳实验模态分析 |
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| 引用本文： | 郭维,刘斌,冯涛,章艺.冰箱压缩机机壳实验模态分析[J].噪声与振动控制,2010,30(3):67-70. |
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| 作者姓名： | 郭维 刘斌 冯涛 章艺 |
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| 作者单位： | （1.海军991工程办公室，北京100841；2. 北京工商大学机械工程学院，北京100048；3. 中船重工704研究所，上海200031） |
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| 基金项目： | 北京市教委科技发展面上项目 |
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| 摘 要： | 采用锤击脉冲激励法,对某型号冰箱压缩机机壳进行了实验模态分析,识别了整机壳体的各阶固有频率(1 KHz-4 KHz)、阻尼和模态振型等参数,获得整机壳体的固有振动特性。并以实验模态分析为基础,研究整机壳体的结构动态特性,实验模态分析结果表明:压缩机壳体模态振型以内外扩张振动为主,封闭壳体的固有振动特性是压缩机噪声辐射的主要原因。实验模态分析的结果可为压缩机减振和降噪设计提供参考依据。
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| 关 键 词： | 振动与波 冰箱压缩机 实验模态 噪声 |
| 收稿时间： | 2009-12-10 |
Experimental Modal Analysis of a Refrigeration Compressor's Shell |
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| GUO Wei,LIU Bin,FENG Tao,ZHANG Yi.Experimental Modal Analysis of a Refrigeration Compressor's Shell[J].Noise and Vibration Control,2010,30(3):67-70. |
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| Authors: | GUO Wei LIU Bin FENG Tao ZHANG Yi |
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| Affiliation: | (1. Naval 991 Engineering Office, Beijing 100841, China;2. College of Mechanical Engineering, Beijing Technology and Business University, Beijing 100048, China；3. Shanghai Marine Equipment Research Institute, Shanghai 200031, China) |
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| Abstract: | By using hammering pulse-inspirit method,the experimental modal analysis of a refrigeration compressor＇s shell is carried out.The fundamental modal parameters,including natural frequencies（1kHz-4kHz）,damping and mode shapes,are estimated and identified.The intrinsic vibration characteristic of the compressor＇s shell is obtained.Based on the experimental modal analysis,the dynamic characteristic of the shell structure is investigated.The results show that the main modal shapes of the compressor＇s shell are essentially the outward-expanding and inward-contracting vibrations.The main cause of noise radiation is the intrinsic vibration of the shell.The results of the experimental modal analysis can provide a useful reference for vibration and noise reduction of the compressors. |
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| Keywords: | vibration and wave refrigeration compressor experimental modal noise |
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