scholarly journals Dynamic response analysis of ground using a coupled finite element and boundary element method in time domain.

1989 ◽  
pp. 395-404
Author(s):  
Terumi TOUHEI ◽  
Nozomu YOSHIDA
Keyword(s):  
Finite Element ◽  
Boundary Element Method ◽  
Dynamic Response ◽  
Boundary Element ◽  
Time Domain ◽  
Response Analysis ◽  
Dynamic Response Analysis ◽  
Element Method

scholarly journals A Coupled Smoothed Finite Element-Boundary Element Method for Structural-Acoustic Analysis of Shell

2017 ◽  
Vol 42 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Wanyi Tian ◽  
Lingyun Yao ◽  
Li Li
Keyword(s):  
Finite Element ◽  
Boundary Element Method ◽  
Frequency Response ◽  
Boundary Element ◽  
Acoustic Analysis ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Acoustic Problem ◽  
Element Boundary ◽  
Element Method

Abstract Nowadays, the finite element method (FEM) - boundary element method (BEM) is used to predict the performance of structural-acoustic problem, i.e. the frequency response analysis, modal analysis. The accuracy of conventional FEM/BEM for structural-acoustic problems strongly depends on the size of the mesh, element quality, etc. As element size gets greater and distortion gets severer, the deviation of high frequency problem is also clear. In order to improve the accuracy of structural-acoustic problem, a smoothed finite-element/boundary-element coupling procedure (SFEM/BEM) is extended to analyze the structural-acoustic problem consisting of a shell structure interacting with the cavity in this paper, in which the SFEM and boundary element method (BEM) models are used to simulate the structure and the fluid, respectively. The governing equations of the structural-acoustic problems are established by coupling the SFEM for the structure and the BEM for the fluid. The solutions of SFEM are often found to be much more accurate than those of the FEM model. Based on its attractive features, it was decided in the present work to extend SFEM further for use in structural-acoustic analysis by coupling it with BEM, the present SFEM/BEM is implemented to predict the vehicle structure-acoustic frequency response analysis, and two numerical experiments results show that the present method can provide more accurate results compared with the standard FEM/BEM using the same mesh. It indicates that the present SFEM/BEM can be widely applied to solving many engineering noise, vibration and harshness (NVH) problems with more accurate solutions.

Dynamic Response analysis of Long Span Transmission Tower under Tornado

2012 ◽  
Vol 450-451 ◽  
pp. 1257-1260
Author(s):  
Qiang Gao ◽  
Chao Ren ◽  
Yang Xu ◽  
Zhen Yao Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Dynamic Analysis ◽  
Wind Direction ◽  
Response Analysis ◽  
Transmission Tower ◽  
Dynamic Response Analysis ◽  
Long Span ◽  
Element Method

To study the effects of tornado on long span transmission tower, a model of the tower is built and the features of the tornado are considered. Three different wind cases are discussed in dynamic analysis with finite element method. The analysis results show that dynamic response is more significant at 45° wind direction.

Dynamic Response Analysis of Shear-Type Compact MR Brake Using Finite Element Method

2009 ◽  
Vol 45 (3) ◽  
pp. 1728-1731 ◽  
Author(s):  
S. Suzuki ◽  
Y. Kawase ◽  
T. Yamaguchi ◽  
K. Hirata ◽  
Yu. Okaue
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Response ◽  
Response Analysis ◽  
Dynamic Response Analysis ◽  
Shear Type ◽  
Element Method

Analysis of Hydroelasticity of Floating Shiplike Structure in Time Domain Using a Fully Coupled Hybrid BEM-FEM

2009 ◽  
Vol 53 (01) ◽  
pp. 31-47
Author(s):  
Yooil Kim ◽  
Kyong-Hwan Kim ◽  
Yonghwan Kim
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Boundary Element Method ◽  
Boundary Element ◽  
Time Domain ◽  
Integration Scheme ◽  
Structural Domain ◽  
Structural Problems ◽  
Fully Coupled ◽  
Element Method

A fully coupled time-domain ship hydroelasticity problem focusing on a springing phenomenon is considered in this study using a hybrid boundary element method (BEM) finite element method (FEM) scheme. The fluid domain surrounding a flexible vessel is handled with a boundary element method adopting a higher-order B-spline Rankine panel method. The structural domain is modeled by a finite element method relying on the one-dimensional beam element, which is able to capture the coupling effect between torsion and bending as well as warping distortion. Coupling between the two subdomains is realized by the Newton method in which an exact Jacobian matrix is derived by solving both fluid and structure tangent problems. The calculation is repeated until the solution reaches convergence. Thanks to the positive aspects of this implicit scheme, numerical instability related to the time integration can be avoided without relying on infinite frequency added mass, which is inevitable when an explicit scheme is used. Moreover, a direct integration scheme, such as the Newmark-β method, for structural problems can be used, and this formulation can be easily extended to the case with structural nonlinear effect, such as large deformation. The developed computer program is validated through comparison with published experimental data, ending up with good correspondence between the two results. Validation is also achieved through a comparative study on rigid body motion with an existing six degrees of freedom (6-DOF) ship motion program.

Dynamic Response Analysis of Column-Supported Silos

2011 ◽  
Vol 255-260 ◽  
pp. 304-308
Author(s):  
Yong Gang Ding ◽  
Jian Qiang Wang ◽  
Yu Cheng ◽  
Ling Fan
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Dynamic Response ◽  
Response Analysis ◽  
Grain Storage ◽  
Dynamic Response Analysis ◽  
Single Column ◽  
Element Method ◽  
At Home

In consideration of the deficient study on dynamic response of reinforced concrete silos, especially group silos at home and abroad, taking the silos of one grain storage for instance, the dynamic response analysis of a single column-supported silo and that of group silos are carried out and contrasted through finite element method. Then the analysis results are contrasted with corresponding standards as well as academic studies.

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