Reduction of vibration forces transmitted from a radiator cooling fan to a vehicle body

This article presents methods for reducing transmitted vibration forces caused by mass unbalance of the radiator cooling fan during vehicle idling. To identify the effects of mass unbalance upon the vibration characteristics, vibration signals of the fan blades were experimentally measured both with...

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Bibliographic Details
Published in:Journal of sound and vibration 2018-04, Vol.419, p.183-199
Main Authors: Lim, Jonghyuk, Sim, Woojeong, Yun, Seen, Lee, Dongkon, Chung, Jintai
Format: Article
Language:English
Subjects:
Computer simulation
Cooling
Cooling effects
Design parameters
Dynamic simulation
Dynamical systems
Equivalence
Fan blades
Idling
Mass balance models
Radiator cooling fan module
Radiators
Rubber
Rubber mounting
Shroud stators
Sound waves
Stiffness
Transmitted vibration force
Unbalance
Vibration analysis
Vibration measurement
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Summary:This article presents methods for reducing transmitted vibration forces caused by mass unbalance of the radiator cooling fan during vehicle idling. To identify the effects of mass unbalance upon the vibration characteristics, vibration signals of the fan blades were experimentally measured both with and without an added mass. For analyzing the vibration forces transmitted to the vehicle body, a dynamic simulation model was established that reflected the vibration characteristics of the actual system. This process included a method described herein for calculating the equivalent stiffness and the equivalent damping of the shroud stators and rubber mountings. The dynamic simulation model was verified by comparing its results with experimental results of the radiator cooling fan. The dynamic simulation model was used to analyze the transmitted vibration forces at the rubber mountings. Also, a measure was established to evaluate the effects of varying the design parameters upon the transmitted vibration forces. We present design guidelines based on these analyses to reduce the transmitted vibration forces of the radiator cooling fan.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2018.01.016