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Automobile Interior Noise Prediction Based on Energy Finite Element Method
Technical Paper
2011-01-0507
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
For the purpose of predicting the interior noise of a passenger automobile at middle and high frequency, an energy finite element analysis (EFEA) model of the automobile was created using EFEA method. The excitations including engine mount excitation and road excitation were measured by road experiment at a speed of 120 km/h. The sound excitation was measured in a semi-anechoic chamber. And the wind excitation was calculated utilizing numeric computation method of computational fluid dynamics (CFD). The sound pressure level (SPL) and energy density contours of the interior acoustic cavity of the automobile were presented at 2000 Hz. Meanwhile, the flexural energy density and flexural velocity of body plates were calculated. The SPL of interior noise was predicted and compared with the corresponding value of experiment. The comparison result between prediction and experiment results shows that the absolute error is 0.08 dB (A), and the prediction precision is satisfied with the EFEA model of the automobile.
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Authors
Citation
Chen, S., Wang, D., Li, W., and Zan, J., "Automobile Interior Noise Prediction Based on Energy Finite Element Method," SAE Technical Paper 2011-01-0507, 2011, https://doi.org/10.4271/2011-01-0507.Also In
References
- Deng-feng, Wang Shu-ming, Chen Wei, Qu et al. Car interior noise prediction and experimentation using statistical energy analysis Journal of Jilin University (Engineering and Technology Edition) 39 Sup. 1 2008 68 73
- Burroughs, Courtney B. et al. An introduction to statistical energy analysis Acoustical Society of America 101 4 1997 177 1789
- Misaji, K. Tada, H. Yamashita, T. Nakamura, M. et al. “Testing Uniqueness of a Hybrid SEA Modeling Solution for a Passenger Car,” SAE Technical Paper 2003-01-1408 2003 10.4271/2003-01-1408
- Dhulipudi, M. Sivakumar, J. Prakash, J. “Engine Front Cover Radiated Noise Estimation using Statistical Energy Analysis Approach,” SAE Technical Paper 2007-01-2301 2007 10.4271/2007-01-2301
- Bernhard, R. J. Huff, J. E. Jr. Structural-Acoustic Design at High Frequency Using the Energy Finite Element Method Journal of Vibration and Acoustics 121 7 1999 295 301
- Zhang, Weiguo Vlahopoulos, Nickolas Wu, Kuangcheng An energy finite element formulation for high-frequency vibration analysis of externally fluid-loaded cylindrical shells with periodic circumferential stiffeners subjected to axi-symmetric excitation Journal of Sound and Vibration 282 2005 679 700
- Choi, Kyung K. Dong, Jun Parametric Design Sensitivity Analysis of High Frequency Structural-Acoustic Problems Using Energy Finite Element Method ASME 2003 Design Engineering Technical Conferences and Computers and Information in Engineering Conference Chicago, Illinois, USA 2003
- Wang, A. Vlahopoulos, N. “Vehicle NVH Analysis Using EFEA & EBEA Methods,” SAE Int. J. Passeng. Cars - Mech. Syst. 2 1 814 821 2009 10.4271/2009-01-0766
- Vlahopoulos, N. Wang, A. “Combining Energy Boundary Element with Energy Finite Element Simulations for Vehicle Airborne Noise Predictions,” SAE Technical Paper 2008-01-0269 2008 10.4271/2008-01-0269
- Zhang, W. Raveendra, S. “High Frequency Vibro-Acoustic Analysis Using Energy Finite Element Method,” SAE Int. J. Passeng. Cars - Mech. Syst. 2 1 822 831 2009 10.4271/2009-01-0771
- Zhang, W. Raveendra, S. “Sound Package Analysis using Energy Finite Element Method,” SAE Technical Paper 2007-01-2309 2007 10.4271/2007-01-2309
- de Lima, W. Vlahopoulos, N. Sbragio, R. He, J. “Interior Aircraft Noise Computations due to TBL Excitation using the Energy Finite Element Analysis,” SAE Technical Paper 2009-01-2248 2009 10.4271/2009-01-2248
- Wang, A. Vlahopoulos, N. Buehrle, R. Klos, J. “Energy Finite Element Analysis of the NASA Aluminum Testbed Cylinder,” SAE Technical Paper 2005-01-2372 2005 10.4271/2005-01-2372