Abstract
Current UN ECE vehicle noise regulation requires a demanding reduction of the overall noise level emitted to the outside to the benefit of the health of citizens and road users. New limits have been implemented in the UN R51 Regulation to reduce noise. To achieve these goals, car manufacturers need to refine their vehicle set-up, and a purely experimental approach may come too late. This article shows a method for simulating pass-by noise that exploits numerical transfer functions and a library of experimentally characterized sources with the aim of reducing noise and finding a better compromise between costs and effectiveness of the modifications. In addition, a simple software tool was created for data processing and to facilitate the workflow, used for the evaluation of the rank of the different paths.
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Notes
- 1.
This vehicle category includes M1, N1 and M2 having a technically permissible maximum laden mass not exceeding 3500 kg.
- 2.
PMR: Power to mass ratio index.
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Acknowledgments
The authors wish to thank the support of public funded project DINAMO that has focused the attention on virtual simulation technique, moreover, the authors wish to thank FFT support for the continuous and very effective help during the setup of the numerical phase.
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© 2023 Der/die Autor(en), exklusiv lizenziert an Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature
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Di Nenno, G., Danti, M., Biasiolo, M., Celiberti, L., Amodeo, D., Voglino, R. (2023). A Hybrid (Numerical/experimental) Approach for the Assessment of Sound Sources Paths in Pass-by Noise Testing. In: Heintzel, A. (eds) Automotive Acoustics Conference 2021. AUAC 2021. Proceedings. Springer Vieweg, Wiesbaden. https://doi.org/10.1007/978-3-658-41475-7_5
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DOI: https://doi.org/10.1007/978-3-658-41475-7_5
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