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Engine Noise Radiation - Prediction and Test Comparison
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English
Abstract
This paper presents a validation project carried out by the Ford Motor Company and Numerical Integration Technologies (NIT) concerning the numerical prediction of engine noise radiation.
The importance and the difficulty of building a structural model (predicting accurate vibration data) are discussed. A new methodology has been developed. This method consists of a modal expansion of experimental data and allows to introduce experimental vibration measurements in the numerical approach to enhance the quality of the predictions.
Provided that the structural behavior is correctly assessed, the project has shown that the BEM-based acoustic predictions agree remarkably well with test data.
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Authors
Citation
Viersbach, U., Maurell, R., Guisset, P., and Rossion, J., "Engine Noise Radiation - Prediction and Test Comparison," SAE Technical Paper 951342, 1995, https://doi.org/10.4271/951342.Also In
References
- Numerical Integration Technologies NV, SYSNOISE Rev 5.1 User's Manual, Leuven August 1994
- Coyette, J.P. Fyfe, K.R. “Solution of Elasto-Acoustic Problems Using a Variational Finite Element/Boundary Element Technique” The Winter Annual Meeting of the ASME Int. Symposium on Numerical Techniques in Acoustic Radiation San Francisco 15 25 1989
- Guisset, P. Coyette, J.P. “A Global Acoustic Sensitivity Procedure for Structural Optimization” Proceedings of Inter-Noise 93, Leuven 189 192 1993
- The Macneal-Schwendler Corporation MSC/NASTRAN User's Manual V67 Los Angeles August 1991