Study on the influence of fiber reinforced composite impeller on the vibration characteristics of fan

doi:10.19936/j.cnki.2096-8000.20230328.008

Abstract

Abstract: In order to understand the influence of impeller of different materials on the vibration characteristics of axial flow fan, the impeller layup scheme was determined by studying the effects of different layup angles on the natural frequency and damping ratio of fiber reinforced composite impellers. The safety margins of impellers of different materials under rated conditions are calculated, and the results show that the fiber-reinforced composite impellers have sufficient safety margins during operation. The harmonic response analysis method was used to compare and analyze the vibration response of the fan with aluminum alloy impeller and fiber reinforced composite impeller at rated speed, and the vibration test was carried out for the same fan with only different impeller. The simulation and test results show that compared with the fan equipped with aluminum alloy impeller, the vibration acceleration of the fan equipped with carbon fiber reinforced plastic impeller decreases significantly in the low frequency range, and the amplitude of vibration acceleration of the fan equipped with carbon fiber reinforced composite impeller is larger in the high frequency range. The structural vibration acceleration of the fan equipped with glass fiber reinforced plastic impeller decreases greatly in the whole frequency band, and the vibration reduction effect is remarkable.

Key words: axial fan, fiber reinforced composite, vibration experiment, finite element analysis

CLC Number:

TB332

ZHANG Jinguang, DENG Wei, YANG Zhen, QIU Hao, WEN Xianglong. Study on the influence of fiber reinforced composite impeller on the vibration characteristics of fan[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(3): 53-58.

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