Boundary element method applied to certain structural-acoustic coupling problems

For acoustic radiation of open thin-walled structure, it was difficult to analyze directly by analytical method. The problem could be solved by several numerical methods. This paper had studied the basic theory of the numerical methods as FEM (Finite Element Method), BEM (Boundary Element Method) and IFEM (Infinite Element Method), and the numerical methods to solve open structure radiation problem. Under the premise of structure-acoustic coupling, this paper analyzed the theory and flow of the methods on acoustic radiation of open structure, including IBEM (Indirect Boundary Element Method), DBEM (Direct Boundary Element Method) coupling method of interior field and exterior field, FEM and BEM coupling method, FEM and IFEM coupling method. This paper took the open structure as practical example, and applied the several methods to analyze it, and analyzed and compared the several results to get relevant conclusions.

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Technical memorandum: Efficient analysis of finline structures by the boundary-element method

IEE Proceedings H Microwaves Antennas and Propagation ◽

10.1049/ip-h-2.1992.0020 ◽

1992 ◽

Vol 139 (1) ◽

pp. 116 ◽

Cited By ~ 1

Author(s):

B. Song ◽

J. Fu

Keyword(s):

Boundary Element Method ◽

Boundary Element ◽

Element Method

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Solution of the resonant frequencies of a cavity resonator by boundary element method (BEM)

IEE Proceedings H Microwaves Antennas and Propagation ◽

10.1049/ip-h-2.1988.0076 ◽

1988 ◽

Vol 135 (6) ◽

pp. 361 ◽

Cited By ~ 5

Author(s):

W. Geyi ◽

W. Hongshi

Keyword(s):

Boundary Element Method ◽

Boundary Element ◽

Cavity Resonator ◽

Resonant Frequencies ◽

Element Method

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A BOUNDARY-ELEMENT METHOD FOR ATOMIZATION OF A FINITE LIQUID JET

Atomization and Sprays ◽

10.1615/atomizspr.v5.i6.60 ◽

1995 ◽

Vol 5 (6) ◽

pp. 621-638 ◽

Cited By ~ 21

Author(s):

J. H. Hilbing ◽

Stephen D. Heister ◽

C. A. Spangler

Keyword(s):

Boundary Element Method ◽

Boundary Element ◽

Liquid Jet ◽

Element Method

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

Tire Science and Technology ◽

10.2346/1.2139524 ◽

1993 ◽

Vol 21 (2) ◽

pp. 66-90 ◽

Cited By ~ 10

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.

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