噪声与振动控制

›› 2010, Vol. 30 ›› Issue (3): 67-70.DOI: 10.3969/j.issn.1006-1355.2010.03.018

• 振动理论与数值解法 • 上一篇    下一篇

《冰箱压缩机机壳实验模态分析》

郭维1，刘斌2，冯涛2，章艺3   

  1. （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）
  • 收稿日期:2009-12-10 修回日期:1900-01-01 出版日期:2010-06-18 发布日期:2010-06-18
  • 通讯作者: 郭维

《Experimental Modal Analysis of a Refrigeration Compressor’s Shell》

GUO Wei1,LIU Bin2，FENG Tao2，ZHANG Yi3   

  1. (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)
  • Received:2009-12-10 Revised:1900-01-01 Online:2010-06-18 Published:2010-06-18
  • Contact: GUO Wei1

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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。

关键词: 振动与波, 冰箱压缩机, 实验模态, 噪声

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.

Key words: vibration and wave, refrigeration compressor, experimental modal, noise

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