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On The evaluation of radiated sound field of Engine covers
Technical Paper
2001-01-1412
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Acoustical performance of many NVH systems is evaluated by computing the radiated noise of such systems. Although the computation of relevant acoustical quantities such as the radiation efficiency and sound power can be performed by using approximate method such as the Rayleigh integral method, in most instances rigorous methods such as the boundary element method is preferred. Unfortunately the boundary element method for radiation problems fails at the eigenfrequencies associated with the interior cavity. Additionally, in most instances the acoustical performance is needed to be evaluated over a range of frequencies and in a traditional boundary element system this evaluation is performed independently at each discrete frequency. In this presentation, issues associated with the accuracy and efficiency of these solutions are addressed by investigating the solution of progressively more complex industrial problems.
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Hong, K., Tathavadekar, P., and Raveendra, S., "On The evaluation of radiated sound field of Engine covers," SAE Technical Paper 2001-01-1412, 2001, https://doi.org/10.4271/2001-01-1412.Also In
SAE 2001 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V110-6; Published: 2002-09-15
Number: V110-6; Published: 2002-09-15
References
- Blakely Ken MSC/NASTRAN Basic Dynamic Analysis The Macneal-Schwendler Corporation
- COMET/Acoustics User Guide Collins & Aikman
- Raveendra S. T. Gardner B. K. Stark R. “An Indirect Boundary Element Technique for Exterior Periodic Acoustic Analysis” Proceedings of the Noise and Vibration Conference 1997
- Seybert A.F Hamilton D.A. Hayes, P.A. “Prediction of Radiated Noise from Engine Components using the BEM and the Rayleigh Integral” Proceedings of the Noise and Vibration Conference 1997