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http://dx.doi.org/10.5050/KSNVE.2013.23.7.624

Parametric Study for the Squeal Noise Reduction of an Automobile Water Pump  

Kim, Bohyeong (Hanyang University)
Jung, W. (Hanyang University)
Baek, H. (Hyundai Motor Company)
Kang, D. (Hyundai Motor Company)
Chung, Jintai (Hanyang University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.23, no.7, 2013 , pp. 624-630 More about this Journal
Abstract
In this study, a parametric study is performed to investigate the squeal noise of an automobile water pump. The squeal noise studied in this paper is generated by the self-excited torsional resonance of the rotating shaft, and this noise is related to the stick-slip phenomenon of the mechanical seal in the water pump. The mechanical seal friction has the characteristics of the negative velocity-gradient. The equations of motion of multiple-degree-of-freedom torsional vibration model is constructed by the Holzer's method and then the equation is transformed to an equivalent single-degree-of-freedom torsional resonance simulation model. A squeal noise criteria is determined by the simulation model to perform the parametric study. The design parameters(the mass moment of inertia of the pulley, the mass moment of inertia of the impeller, the length of the shafts, the radius of the shafts, spinning speed of the shafts, the position of the mechanical seal, radius of the mechanical seal, and normal load of the mechanical seal) are investigated to confirm the stability for the squeal noise.
Keywords
Squeal Noise; Water Pump;
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