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http://dx.doi.org/10.5050/KSNVN.2008.18.9.972

Structural Modification for Noise Reduction of the Blower Case in a Fuel Cell Passenger Car Based on the CAE Technology  

Song, Min-Keun (인하대학교 대학원 기계공학과)
Lee, Sang-Kwon (인하대학교 기계공학과)
Seo, Sang-Hoon (현대자동차)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.18, no.9, 2008 , pp. 972-981 More about this Journal
Abstract
The blower which is installed in a FCEV(fuel cell electric vehicle) may cause noise due to misalignment and unbalance of mechanical components that rotate at high speed. One of the key points in efforts to minimize the noise radiation from a blower is the knowledge of the main radiating component and the relation between the surface vibration of a blower and the sound pressure. In this research, the blower model is developed based on FEM(finite element method). FE(finite element) model is reliable by correlation of frequencies and MAC(modal assurance criterion) values between EMA(experimental modal analysis) and FEA(finite element analysis). This model is applied to predict the vibration of a blower by using inverse force identification method and predict the radiating noise by using BEM(boundary element method). Comparing the frequencies of resonance and those mode shapes between EMA and FEA, a structural modification of the FE model is evaluated for reducing the parameters of the blower noise.
Keywords
Modal Analysis; Finite Element Method; Boundary Element Method; Radiating Noise; Blower;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Blakely, K., 1991, 'Updating MSC/Nastran Models to Match Test Data', Proceedings MSC World Users Conference
2 Shung, H. S. and Donald, J. N., 1989, 'Engine Vibration and Noise Reduction Using a Crank-Block System Model', SAE paper 891129
3 Paras, M. M., 'Validation of a System of Finite Element Models Representing a Complex Transaxle', SAE 2003-01-1594
4 Seo, J. B., Yoon, H. W. and Kim, T. J., 1994, 'Study of Damping Material Characteristics', Journal of the KSAE, Vol. 16, No. 4, pp. 32-36   과학기술학회마을
5 Kim, S. J., Lee, J. Y. and Lee, S. K., 2007, 'Noise Refinement of a Vehicle by Reduction of the Axle Gear Whine Noise Based on Structural Modification Using FEM and BEM', International Journal of Automotive Technology, Vol. 8, No. 5, pp. 605-614   과학기술학회마을
6 SYSNOISE Revision 5.0 Theoretical Manual, 1993, Numerical Integration Technologies, Belgium
7 Jeong, J. H. and Ih, J. G., 1997, 'Acoustic Coupling Between Passenger and Luggage Compartments through Loudspeaker Holes Using Indirect BEM', Journal of the KSAE, Vol. 5, No. 3, pp. 66-75   과학기술학회마을
8 Lee, C. M. and Lee, J., 2001, 'A Study on the Evaluation of the Loss Factor and Young's Modulus of Damping materials on Temperature Condition', Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 11, No. 9, pp. 391-397