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EXPERIMENTAL IDENTIFICATION ON A GEAR WHINE NOISE IN THE AXLE SYSTEM OF A PASSENGER VAN  

Kim, S.J. (Department of Mechanical Engineering, Inha University)
Lee, S.K. (Department of Mechanical Engineering, Inha University)
Publication Information
International Journal of Automotive Technology / v.8, no.1, 2007 , pp. 75-82 More about this Journal
Abstract
This paper presents practical work on the reduction of gear whine noise. In order to identify the source of the gear whine noise, transfer paths are searched and analyzed by operational deflection shape analysis and experimental modal analysis. It was found that gear whine noise has an air-borne noise path instead of structure-borne noise path. The main sources of air-borne noise were the two global modes caused by the resonance of an axle system. These modes created a vibro-acoustic noise problem. Vibro-acoustic noise can be reduced by controlling the vibration of the noise source. The vibration of noise source is controlled by the modification of structure to avoid the resonance or to reduce the excitation force. In the study, the excitation force of the axle system is attenuated by changing the tooth profile of the hypoid gear. The modification of the tooth profile yields a reduction of transmission error, which is correlated to the gear whine noise. Finally, whine noise is reduced by 10 dBA.
Keywords
SUV car; Gear; Whine; Axle; Passenger van; Operational deflection shape analysis; Vibro-acoustic;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 3  (Related Records In Web of Science)
Times Cited By SCOPUS : 5
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1 Houser, R. and Harianto, J. (2001). Manufacturing robustness analysis of noise excitation and design of alternative gear sets. SAE Paper No. 2001-01-1417
2 Lee, S. K., Yeo, S. D. and Choi, B. U. (1993). Identification of the relation between crankshaft bending and interior noise of A/T vehicle in idle state. SAE Paper No. 930618
3 Tarutanl, I. and Maki, H. (2000). A new tooth flank form to reduce transmission error of helical gear. SAE Paper No. 2000-01-1153
4 Lee, S. K. (1995). Weight reduction and noise refinement of hyundai 1.5 liter powertrain. SAE Paper No. 940995
5 Sun, Z., Steyer, G., Meinhardt, G. and Ranek, R. (2003). NVH robustness design of axle System. SAE Paper No. 2003-01-1492
6 Athavale, S., Krishnaswami, R. and Kuo, E. (2001). Estimation of statistical distribution of composite manufactured transmission error, a precursor to gear whine for a helical planetary gear system. SAE Paper No. 2001-01-1507
7 Glover, R. and Rauen, D. (2003). Gear transmission error for use with ger inspection machine. SAE Paper No. 2003-01-1663
8 Becker, S. B. and Yu, S. (1999). Gear noise rating prediction based on objective measurement. SAE Paper No. 1999-01-1721
9 Donley, M. G., Lim T. C. and Steyer, G. C. (1992). Dynamic analysis of automotive gearing systems. J. Passenger Cars: Mechanical Systems 101, 6, 958–968
10 Lee, S. K. (2001). Vibrational power flow and its application to a passenger car for identification of vibration transmission path. SAE Paper No. 2001-01-1451
11 Wyckaert, K. and Van der Auweraer, H. (1995). Opernational analysis, transfer path analysis, modal analysis: Tools to understand road noise problems in cars. SAE Paper No. 951752
12 Lee, S. K., Chae, H. C, Park, D. C. and Jung, S. G. (2003). Booming index development for sound quality evaluation of a passenger car. SAE Paper No. 2003-01-1497
13 Becker, S. B. and Yu, S. (1999). Objective noise rating of gear whine. SAE Paper No. 1999-01-1720
14 Ko, K. H., Kook, H. H. and Heo, S. J. (2006). New technique in the use of vibro-acoustical reciprocity with application to the noise transfer function measurement. Int. J. Automotive Technology 7, 2, 173-177   과학기술학회마을
15 Sun, Z., Voight, M. and Steyer, G. (2004). Driveshaft design guidelines for optimized axle gear mesh NVH perfprmance. FISITA 2004, F20004V287, Seoul, Korea