Acoustic radiation and scattering from shells of revolution using finite element and boundary element methods.

1991 ◽  
Vol 90 (4) ◽  
pp. 2251-2251
Author(s):  
Peter R. Stepanishen
Keyword(s):  
Finite Element ◽  
Boundary Element ◽  
Acoustic Radiation ◽  
Boundary Element Methods ◽  
Shells Of Revolution

Application of the Boundary Element Method and Modal Analysis to Tire Acoustics Problems

1993 ◽  
Vol 21 (2) ◽  
pp. 66-90 ◽  
Author(s):  
Y. Nakajima ◽  
Y. Inoue ◽  
H. Ogawa
Keyword(s):  
Finite Element ◽  
Boundary Element Method ◽  
Boundary Element ◽  
Acoustic Radiation ◽  
Traffic Noise ◽  
Noise Prediction ◽  
Prediction System ◽  
Tire Noise ◽  
Acoustic Contribution ◽  
Element Method

Abstract Road traffic noise needs to be reduced, because traffic volume is increasing every year. The noise generated from a tire is becoming one of the dominant sources in the total traffic noise because the engine noise is constantly being reduced by the vehicle manufacturers. Although the acoustic intensity measurement technology has been enhanced by the recent developments in digital measurement techniques, repetitive measurements are necessary to find effective ways for noise control. Hence, a simulation method to predict generated noise is required to replace the time-consuming experiments. The boundary element method (BEM) is applied to predict the acoustic radiation caused by the vibration of a tire sidewall and a tire noise prediction system is developed. The BEM requires the geometry and the modal characteristics of a tire which are provided by an experiment or the finite element method (FEM). Since the finite element procedure is applied to the prediction of modal characteristics in a tire noise prediction system, the acoustic pressure can be predicted without any measurements. Furthermore, the acoustic contribution analysis obtained from the post-processing of the predicted results is very helpful to know where and how the design change affects the acoustic radiation. The predictability of this system is verified by measurements and the acoustic contribution analysis is applied to tire noise control.

scholarly journals Coupled finite element/boundary element approach for acoustic radiation and scattering

1988 ◽  
Vol 84 (S1) ◽  
pp. S58-S58
Author(s):  
Gordon C. Everstine ◽  
Francis M. Henderson ◽  
Luise S. Schuetz
Keyword(s):  
Finite Element ◽  
Boundary Element ◽  
Acoustic Radiation ◽  
Element Approach ◽  
Element Boundary
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