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Use of Statistical Energy Analysis Method to Predict Sound Transmission Loss of Sound Barrier Assemblies
Technical Paper
1999-01-1707
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Statistical Energy Analysis (SEA) method is used to predict Sound Transmission Loss (STL) of sound barrier assemblies (SBA) commonly used in automotive dashmat design. Tests are performed for dashmat plaques with and without design features, and SEA equations have been used for predicting transmission loss with acceptable accuracy below the interception (cavity resonance) frequency. For frequency range higher than interception point, the SEA software used overestimates STL. For dashmat tests with design features, test results and SEA predictions are generally agreeable.
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Citation
Liu, W., Tao, D., and Kathawate, G., "Use of Statistical Energy Analysis Method to Predict Sound Transmission Loss of Sound Barrier Assemblies," SAE Technical Paper 1999-01-1707, 1999, https://doi.org/10.4271/1999-01-1707.Also In
References
- Norton M. P. Fundamentals of Noise and Vibration Analysis for Engineers Cambridge University Press 1989
- Society of Automotive Engineers Recommended Practice J1400 “Laboratory Measurement of the Airborne Sound Barrier Performance of Automotive Materials and Assemblies.”
- Wentzel Richard E. Saha Pranab “Sound Transmission Loss Prediction of Double-Wall Barrier Assemblies” Sound and Vibration 18 27 July 1997
- AutoSEA Theory and Quality Assurance Manual Vibro-Acoustic Sciences Ltd. 1995