摘要
根据某型涡旋压缩机振动情况,对其进行振动测试,获得压缩机各主要零部件的高频振动频谱,采用有限元分析软件ANSYS对涡旋压缩机进行结构模态分析,获得压缩机各主要零部件前六阶固有频率,通过对振动频谱的分析和固有频率与试验振动频谱的对比分析,发现顶盖存在共振现象,支撑架处外壳是疲劳损伤易发部位,为此提出增加顶盖厚度、增加顶盖弧度和增加支撑架处外壳厚度三种改进方案;利用ANSYS对三种改进方案进行有限元分析,对比优化前后顶盖和支撑架处外壳应力应变变化情况,结果表明增加顶盖弧度和增加支撑架处外壳厚度能很好地降低压缩机振动。
Vibration test of a certain type of scroll compressor was conducted. The high-frequency vibration spectrum of the major components of the compressor was derived. Modal analysis of the scroll compressor was carried out through the finite element analysis software ANSYS and the first six natural frequencies were obtained. Comparing the results of vibration spectrum analysis with those from the test, it was found that resonance occurs on the upper shell, and junction of the shell and the housing is prone to appear fatigue damage. Three improvement schemes, increasing the thickness of the upper shell, increasing the radian of the upper shell and increasing the thickness of the shell at the junction, were put forward. These schemes were verified through the finite element analysis by ANSYS. Comparison of the results shows that among these schemes the latter two schemes were effective for vibration reduction of the compressor.
出处
《噪声与振动控制》
CSCD
2013年第3期50-54,共5页
Noise and Vibration Control
关键词
振动与波
涡旋压缩机
振动测试
ANSYS
减振
vibration and wave
scroll compressor
vibration test
ANSYS
reducing vibration
