Vibrations in centrifugal fans due to v-belt excitation

被引：0
作者：
Fujii T. [1 ]
Ikeda T. [1 ]
Matsushita R. [1 ]
机构：
[1] Teral Inc., Miyuki-cho, Fukuyama-shi, Hiroshima, 720-0003
来源：
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C | 2010年 / 76卷 / 763期
关键词：
Belt seam; Belt tension; Centrifugal fan; Forced vibration; Higher harmonics; Modal analysis; Periodic pulse; Rotary machinery; V-Belt exicitation;
D O I：
10.1299/kikaic.76.516
中图分类号：
学科分类号：
摘要：
For satisfactory prediction and reduction of the vibrations in centrifugal fans, it is necessary to consider the forced vibration with not only unbalance due to rotary machinery but also V-belt excitation. The object of this paper is to show the mechanism of the vibration caused by the V-belt and present an analysis method that is applicable to predict this vibration. The fluctuation of the belt tension takes place when the belt seams pass through the pulleys during operation. While operating, it is considered that the excitation force due to the fluctuation of the belt tension should be a periodic pulse. Hence, the amplitudes of the higher harmonics are predicted by Fourier series and the amplitudes of the frequency response are calculated by using the modal analysis result. As a result, it was concluded that the analyzed data were consistent with the measured data. In addition, it was shown that there is a higher harmonic resonance between the fourth order component of the belt rotation and the natural frequency of the tested fan.
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页码：516 / 524
页数：8
相关论文
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