Prediction of Radiated Noise from Engine Components Using the BEM and the Rayleigh Integral

971954

05/20/1997

Event
SAE Noise and Vibration Conference and Exposition
Authors Abstract
Content
This paper examines the feasibility of using the boundary element method (BEM) and the Rayleigh integral to assess the sound radiation from engine components such as oil pans. Two oil pans, one cast aluminum and the other stamped steel, are used in the study. All numerical results are compared to running engine data obtained for each of these oil pans on a Cummins engine. Measured running-engine surface velocity data are used as input to the BEM calculations. The BEM models of the oil pains are baffled in various ways to determine the feasibility of analyzing the sound radiated from the oil pan in isolation of the engine. Two baffling conditions are considered: an infinite baffle in which the edge of the oil pan are attached to an infinite, flat surface; and a closed baffle in which the edge of the oil pan is sealed with a rigid structure. It is shown that either of these methods gives satisfactory results when compared to experiment. It is also demonstrated that the Rayleigh integral gives results comparable to the BEM.
Meta TagsDetails
DOI
https://doi.org/10.4271/971954
Pages
5
Citation
Seybert, A., Hamilton, D., and Hayes, P., "Prediction of Radiated Noise from Engine Components Using the BEM and the Rayleigh Integral," SAE Technical Paper 971954, 1997, https://doi.org/10.4271/971954.
Additional Details
Publisher
Published
May 20, 1997
Product Code
971954
Content Type
Technical Paper
Language
English