Identification of Sound Source Model Using Inverse-Numerical Acoustic Analysis: Validation of Effectiveness and Applicability

Paper #:
  • 2014-01-2318

Published:
  • 2014-09-30
DOI:
  • 10.4271/2014-01-2318
Citation:
Akei, M., Koizumi, T., Tsujiuchi, N., and Yamauchi, T., "Identification of Sound Source Model Using Inverse-Numerical Acoustic Analysis: Validation of Effectiveness and Applicability," SAE Int. J. Commer. Veh. 7(2):392-398, 2014, doi:10.4271/2014-01-2318.
Pages:
7
Abstract:
This paper describes an identification of a sound source model for a diesel engine installed on an agricultural machine by Inverse-Numerical Acoustic analysis (INA), and the applicability of the identified sound source model. INA is a method to identify surface vibrations from surrounding sound pressures. This method is applicable for a complicated-shaped sound source like an engine. In order to confirm the accuracy of the identified sound source model, the surface vibrations of the engine are compared with the measured results. Moreover, in the condition of the simulated engine room, the surrounding sound pressure levels of the engine are predicted using the sound source model and the boundary element method (BEM). For the verification of the prediction accuracy, the surrounding sound pressures of the engine are measured using the testing device which simulated actual engine room, namely an enclosure. As a result, the sound source model of the diesel engine is identified accurately using the INA. In addition, the surrounding sound pressure levels of engine enclosure are predicted accurately using the sound source model. These results mean that a suitable engine room design for noise is possible, using sound source model obtained by INA.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Technical Paper / Journal Article
2011-04-12
Training / Education
2017-09-22
Training / Education
2010-07-07
Training / Education
2011-04-12