This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Improving SEA Predictions with Experimental Data
Technical Paper
2011-01-1701
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Statistical Energy Analysis (SEA) has been used widely by industry and academia for more than 20 years to predict the mid-to-high frequency range behavior of complex acoustic systems. At Gulfstream Aerospace Corporation (GAC), SEA models have been developed to predict the interior cabin noise levels of completed Gulfstream aircraft. These models are also used for acoustic evaluations of design changes prior to implementation as well as a diagnostic tool for investigating noise and vibration issues. Throughout the development of the SEA models, extensive experimental testing in GAC's Acoustic Test Facility (ATF) was conducted on numerous aircraft components represented in the models. This paper demonstrates the importance of using experimental data to improve the accuracy of the SEA predictions by accurately adjusting the material properties and acoustic parameters of the SEA model to better match the ATF experimental data. This is particularly important for complicated SEA models with thousands of subsystems and junctions.
Recommended Content
Authors
Citation
Wang, T. and Maxon, J., "Improving SEA Predictions with Experimental Data," SAE Technical Paper 2011-01-1701, 2011, https://doi.org/10.4271/2011-01-1701.Also In
References
- Maxon, J and Malluck, A, Application of Statistical Energy Analysis and Optimization in the Design of Gulfstream's G150 Interior Thermal/Acoustic Package, Inter-Noise2006, Hawaii,U. S., Dec 2006.
- Wang, T and Maxon, J, Application of Statistical Energy Analysis and Optimization in the Design of Gulfstream Large-Cabin Aircraft Interior Thermal/Acoustic Package, Inter-Noise2008, Shanghai, China, Oct 26-29, 2008.
- SEAM® Reference Manual, Cambridge Collaborative Inc., Copyright 2010.
- Musser, C, Rodrigues, A and Takaki, D, Use of Statistical Energy Analysis in Vehicle NVH Design Cycle, Brazil SAE NVH conference, Florianopolis, Brazil, Oct 2010.
- ASTM E2249, Standard Test Method for Laboratory Measurement of Airborne Transmission Loss of Buildup Partitions and Elements Using Sound Intensity, ASTM International, 2008.
- Lynch, K. and Maxon, J., “Gulfstream Acoustic Test Facility Capabilities,” SAE Technical Paper 2011-01-1647, 2011, doi:10.4271/2011-01-1647.
- Ver, I and Beranek, L, Noise and Vibration Control Engineering - Principles and Applications, 2nd Edition, John Wiley & Sons, 2006.
- Lyon, R and Dejong, R, Theory and Application of Statistical Energy Analysis, 2nd Edition, Butterworth-Heinemann, 1995.
- Wang, T and Maxon, J, Modeling Isolators in SEA, Inter-Noise2010, Lisbon, Portugal, June 2010.