scholarly journals A comparison between the boundary element method and the superposition method for the analysis of the scattered acoustic fields from rigid bodies and elastic shells

1989 ◽  
Vol 85 (S1) ◽  
pp. S42-S42
Author(s):  
Russel D. Miller ◽  
Hansen Huang ◽  
E. Thomas Moyer ◽  
Herbert Überall
Keyword(s):  
Boundary Element Method ◽  
Boundary Element ◽  
Rigid Bodies ◽  
Superposition Method ◽  
Acoustic Fields ◽  
Elastic Shells ◽  
Element Method

A Study on Contact Stress Analysis in Boundary Element Method

2000 ◽  
Author(s):  
Mehmet Çelik
Keyword(s):  
Boundary Element Method ◽  
Boundary Element ◽  
Engineering Design ◽  
Contact Stress ◽  
Load Distribution ◽  
Roller Bearing ◽  
Contact Problems ◽  
Numerical Approach ◽  
Superposition Method ◽  
Element Method

Abstract A numerical approach for the solution of the contact mechanics problems has been presented using the Boundary Element Method. An automatic load distribution technique is implemented in a contacting element using isoparametric quadratic elements. This type of element is shown to be excellent in modeling regions of rapidly varying stresses in the contact areas. The superposition method is applied to interference contact problems mostly used in engineering design of the systems. The work is focused on the analysis of the loading in a roller bearing housing.

A third-order boundary element method for scattering of elastic shells

1997 ◽  
Author(s):  
M. Gennaretti ◽  
A. Giordani ◽  
L. Morino ◽  
M. Gennaretti ◽  
A. Giordani ◽  
...  
Keyword(s):  
Boundary Element Method ◽  
Boundary Element ◽  
Third Order ◽  
Elastic Shells ◽  
Element Method

On the treatment of hydroelastic slamming by coupling boundary element method and modal superposition method

2021 ◽  
Vol 112 ◽  
pp. 102595
Author(s):  
Song Feng ◽  
Guiyong Zhang ◽  
Decheng Wan ◽  
Shengchao Jiang ◽  
Zhe Sun ◽  
...  
Keyword(s):  
Boundary Element Method ◽  
Boundary Element ◽  
Superposition Method ◽  
Modal Superposition ◽  
Modal Superposition Method ◽  
Element Method

scholarly journals Efficient isogeometric boundary element method for analysis of acoustic scattering from rigid bodies

2020 ◽  
Vol 147 (5) ◽  
pp. 3275-3284
Author(s):  
A. M. A. Alsnayyan ◽  
J. Li ◽  
S. Hughey ◽  
A. Diaz ◽  
B. Shanker
Keyword(s):  
Boundary Element Method ◽  
Boundary Element ◽  
Acoustic Scattering ◽  
Rigid Bodies ◽  
Element Method

An Indirect Boundary Element Method for Computing Sound Field

2012 ◽  
Vol 476-478 ◽  
pp. 1173-1177
Author(s):  
Sheng Yao Gao ◽  
De Shi Wang
Keyword(s):  
Integral Equation ◽  
Boundary Element Method ◽  
Boundary Element ◽  
Acoustic Field ◽  
Boundary Surface ◽  
Sound Field ◽  
Boundary Integral ◽  
Superposition Method ◽  
Wave Superposition ◽  
Element Method

Computing sound field from an arbitrary radiator is of interest in acoustics, with many significant applications, one that includes the design of classical projectors and the noise prediction of underwater vehicle. To overcome the non-uniqueness of solution at eigenfrequencies in the boundary integral equation method for structural acoustic radiation, wave superposition method is introduced to study the acoustics. In this paper, the theoretical backgrounds to the direct boundary element method and the wave superposition method are presented. The wave superposition method does not solve the Kirchoff-Helmholtz integral equation directly. In the approach a lumped parameter model is estabiled from spatially averaged quantities, and the numerical method is implemented by using the acoustic field from a series of virtual sources which are collocated near the boundary surface to replace the acoustic field of the radiator. Then the sound field over the of a pulsating sphere is calculated. Finally, comparison between the analytical and numerical results is given, and the speed of solution is investigated. The results show that the agreement between the results from the above numerical methods is excellent. The wave superposition method requires fewer elements and hence is faster, which do not need as high a mesh density as traditionally associated with BEM.

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