This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Applications of the Statistical Energy Analysis to Vibro-Acoustic Modeling of Vehicles
Technical Paper
2004-01-3352
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
In recent years, SEA has been recognized as an important tool to model the vibro-acoustic behavior of vehicles in mid and high frequencies. Through SEA it is possible to develop vehicle models early in the design stage, reducing the risk of future noise problems and allowing the optimization of noise control treatments. Moreover, at the final design stages, a SEA model can be use to evaluate changes at the project, reducing costs with experiments. In a SEA model, the structure under study is divided in subsystems. The capacity of each subsystem of storekeeping, dissipating and transmitting energy is described by three parameters: modal density, loss factor and coupling loss factor. The noise and vibration sources are include in the model as power inputs to subsystem and, based on an equilibrium power balance, it is possible to calculate the energy of each subsystem. The results obtained by SEA models should be interpreted as average values in time, in the frequency band, in space and at an ensemble of random structures. In this work, the applications of SEA at the vibro-acoustic modeling of vehicles are discussed. The details that should be observed when defining the structural and acoustic subsystem are pointed out. The main methods for the determinations of the SEA parameters are introduced. Special emphasis is given to the calculation of the power inputs of the main noise and vibration sources in a vehicle. Finally, some practical applications of SEA at the automotive industry are presented and discussed.
Recommended Content
Authors
Citation
Cordioli, J., Trichês, M., and Gerges, S., "Applications of the Statistical Energy Analysis to Vibro-Acoustic Modeling of Vehicles," SAE Technical Paper 2004-01-3352, 2004, https://doi.org/10.4271/2004-01-3352.Also In
References
- Lyon R. H. Maidanik G. “Power flow between linearly couple oscillators.” Journal of the Acoustical Society of America 34 623 639 1962
- Smith P. W. JR. “Response and radiation of structural modes excited by sound.” Journal of the Acoustical society of America 34 640 647 1962
- Lyon R. H. DeJong R. G. “Theory and application of Statistical Energy Analysis.” Butterworth-Heinemann Boston - USA 1995
- Burrough C. R. Fischer R. W. Rern F. R. “An introduction to Statistical Energy Analysis.” Journal of the Acoustical Society of America 101 4 1779 1789 1997
- Woodhouse J. “An introduction to Statistical Energy Analysis of structural vibration.” Applied Acoustics 14 455 469 1981
- Fahy F. J. “Statistical Energy Analysis: a critical overview.” Philosophical Transaction of Royal Society of London A346 431 447 1994
- Gerges S. N. Y. 2000
- DeJong R. G. “A study of vehicle interior noise using Statistical Energy Analysis” SAE Technical Paper, 850960 1985
- Fahy F. J. “A note on the subdivision of a volume of air in a vehicle enclosure into SEA subsystems.” Journal of Sound and Vibration 271 3-5 1170 1174 2004
- “AutoSEA2 User Guide” Vibro-Acoustic Sciences, Inc. 1999
- “AutoSEA2 Theory and Quality Assurance Manual” Vibro-Acoustic Sciences, Inc. 1999
- Bremner P. G. Burton T. E. Cunningham A. “AUTOSEA2 - A new design evaluation tool for noise and vibration engineering.” Proceedings of the 1999 ASME Design Engineering Technology Conferences Las Vegas, USA 1999
- Clarkson B. L. “Experimental determination of modal density.” Elishakoff Lyon Random Vibration 59 85 1986
- Keswick P. R. Norton M. P. “A comparison of modal density measurement techniques.” Applied Acoustics 20 137 153 1987
- Yan H. H. Parrett A. “Calculation of Statistical Energy Analysis parameters using Finite Element Analysis.” Internoise2002 Dearborn, USA 2002
- Brown K. T. Norton M. P. “Some comments on the experimental determination of modal densities and loss factors for statistical energy analysis applications.” Journal of Sound and Vibration, 102 4 588 594 1985
- Ranky M. F. Clarkson B. L. “Frequency average loss factors of plates and shells.” Journal of Sound and Vibration 89 3 309 323 1983
- Fahy F. J. Ruivo H. M. “Determination of Statistical Energy Analysis loss factors by means of an input power modulation technique.” Journal of Sound and Vibration 203 5 763 779 1997
- Langley R. S. Heron K. H. “Elastic wave transmission through plate/beam junctions.” Journal of Sound and Vibration 143 2 241 253 1990
- Langley R. S. “Elastic wave transmission coefficients and coupling loss factor for structural junctions between curved panels.” Journal of Sound and Vibration 169 3 297 317 1994
- Heron K. H. “Predictive SEA using line wave impedances.” IUTAM Symposium on Statistical Energy Analysis Southampton, England 1997
- Bies D. A. Hamid S. “In situ determination of loss and coupling loss factors by the power injection method.” Journal of Sound and Vibration 70 2 187 204 1980
- Chen H. O'KEEFE M. BREMNER P. “A comparison of tested-based and analytic SEA models for vibro-acoustics of light truck.” SAE Technical Paper, 951329 1995
- Bharj T. Cimerman B. “Application of Statistical Energy Analysis to a passenger vehicle: combining analytical and test-based prediction in a hybrid model.” INTERNOISE-96 1996
- Hermans L. De Langhe K. Demaestere L. “Methods to estimate the confidence level of teh experimentally derived Statistical Energy Analysis model: application to vehicle.” SAE Technical Paper, 971969 1997
- Onsay T. Akanda A. Goetchius G. “Vibro-acoustic behavior of bead-stiffened flat panels: FEA, SEA and experimental analysis.” SAE Technical Paper, 1999-01-1698 1999
- De Langhe K. “High frequency vibrations: Contribution to experimental and computational SEA parameter identification techniques.” Katholieke Universiteit Leuven Leuven, Belgium 1996
- Cimerman B. Bremner P. Qian Y. Buskirk J. V. “Incorporating layered acoustic trim materials in body structural-acoustic models.” Proceeding of SAE Noise and Vibration Conference 1995
- Tracey B. H. Huang L. M. “Transmission loss for vehicle sound packages with foam layers.” SAE Technical Paper, 1999-01-1670 1999
- Powell R. E. Zhu J. Manning J. E. “SEA modeling and testing for airborne transmission through vehicle sound package.” SAE Technical Paper, 971973 1997
- Nelisse H. Onsay T. “Modeling strategies in SEA: study of a car door.” Internoise2002 Dearboran, USA 2002
- Moeller M. J. Powell R. E. “Review of Statistical Energy Analysis (SEA) applied to the automotive industry 1985 to 1997.” NOISE-CON98 Ypsilanti, USA 1998
- Guan J. “Practical Applications of SEA CAE Analysis in vehicle sound package development.” SAE Technical Paper, 1999-01-1702 1999
- Chen H. O'Keefe M. Bremner P. “A comparison of test-based and analytic SEA models for vibro-acoustics of a light truck.” SAE Technical Paper 951329 1995
- Parrett A. V. Hicks J. K. Burton T. E. Hermans L. “Statistical Energy Analysis of airborne and structure-borne automobile interior noise SAE Technical Paper 971970 1997
- Dong B. Green M. Voutyras M. Bremner P. Kasper P. “Road noise modeling using Statistical Energy Analysis.” Proceeding of SAE Noise and Vibration Conference 1995
- Moeller M. J. Pan J. “Statistical Energy Analysis for road noise simulation.” SAE Technical Paper, 971972 1997
- Onsay T. Wang D. Goetchius G. M. “Statistical Energy Analysis (SEA) of air-borne tire/road noise in a minivan.” NOISE-CON98 Ypsilanti, USA 1998
- Onsay T. Akanda A. Goetchius G. M. “Transmission of structure-borne tire/road noise in a midsize car: Statistical Energy Analysis (SEA).” NOISE-CON98 Ypsilanti, USA 1998
- Hermans L. Iadevaia M. “Guidelines on the use of the experimental SEA for modeling and understanding road noise in cars.” SAE Technical Paper, 1999-01-1704 1999
- Lee J. J. Powell R. E. Ni A. E. Tsou P. “Integration of SEA tire model with vehicle model.” SAE Technical Paper, 1999-01-1700 1999
- Bremner P. Huff J. Bolton J. S. “A model study of how tire construction and material affect vibration-radiated noise.” SAE Technical Paper, 972049 1997
- DeJong R. G. Bharj T. S. Lee J. J. “Vehicle wind noise analysis using a SEA model with measured source levels SAE Technical Paper, 2001-01-1629 2001
- Strumolo G. S. “The wind noise modelller.” SAE Technical Paper, 971921 1997
- Cockburn J. Robertson J. “Vibration response of spacecraft shrouds to in-flight fluctuating pressures.” Journal of Sound and Vibration 33 4 399 425 1974
- Corcos G. M. “Resolution of pressure boundary layer.” Journal of Acoustic Society of America 35 192 199 1963
- Bremner P. G. Wilby J. F. “Aero-vibro-acoustics: problem statement and methods for simulation-based design solution.” AIAA 2002 2551 2002
- Guan J. Huang J. “Analysis of vehicle pillar cavity foam block effect on interior noise using SEA SAE Technical Paper, 1999-01-1701 1999