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Hybrid SEA for Mid-Frequencies
Technical Paper
2007-01-2305
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Statistical Energy Analysis is an accepted method for NVH model development at high frequencies. This paper explores hybrid methods to expand SEA to the mid and low frequency range where the assumption of high modal density is not valid. The newly developed hybrid method is particularly useful for structure-borne noise and vibration studies. The method is based on use of mobility functions to improve calculation of power input, modal densities and coupling factors. Comparison of the hybrid model predictions with measured data show good agreement down to 100 Hz.
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Manning, J., "Hybrid SEA for Mid-Frequencies," SAE Technical Paper 2007-01-2305, 2007, https://doi.org/10.4271/2007-01-2305.Also In
References
- Lyon R. H. “Statistical Analysis of Power Injection and Response in Structures and Rooms,” J. Acoust. Soc. Am. 45 545 565 1969
- Langley R. S. Cotoni V. “Response Variance Prediction in the Statistical Energy Analysis of Built- Up Systems,” J. Acoust. Soc. Am. 115 2 706 718 2004
- Manning Jerome E. “Variance and Confidence Intervals for SEA Predictions,” SAE 2005-01-2432
- Lyon, R. H. DeJong, R. G. Theory and Application of Statistical Energy Analysis 2nd Butterworth-Heinemann Boston 1994
- Bharj, Tej Musser, Chad Presentation 4 th Styrian Noise, Vibration & Harshness Congress 2006
- Manning J. E. “Use of Measured Mobility to Improve SEA Predictions in the Mid-Frequency Range,” Proceedings of DETC99: 17 th ASME Biennial Conference on Mechanical Vibration and Noise, DETC/VIB-8196 1999
- Bobrovnitskii Y. I. “Estimating the Vibrational Energy Characteristics of an Elastic Structure via the Input Impedance and Mobility.” J. Sound Vib. 217 2 351 386
- Manning Jerome “Formulation of SEA parameters using mobility functions,” Transactions of the Royal Society of London 346 1681 477 488 1994
- Manning Jerome E. “SEA Models to Predict Structureborne Noise in Vehicles,” SAE 2003-01-1552