State space coupling of acoustic (boundary element) and structural (finite element) models for fluid‐structure interaction analysis

1993 ◽  
Vol 94 (6) ◽  
pp. 3520-3520 ◽  
Author(s):  
Jeffery Alan Giordano
Keyword(s):  
Finite Element ◽  
State Space ◽  
Boundary Element ◽  
Interaction Analysis ◽  
Fluid Structure Interaction ◽  
Finite Element Models ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Acoustic Boundary Element

Response of Submerged Structures by the Finite Element-Cum-Boundary Element Method

2001 ◽  
Author(s):  
C. W. S. To ◽  
M. A. O’Grady
Keyword(s):  
Finite Element ◽  
Boundary Element ◽  
Fluid Structure Interaction ◽  
Three Dimensional ◽  
Problem Size ◽  
Hybrid Strain ◽  
Fluid Structure ◽  
Structure Interaction ◽  
High Convergence Rate ◽  
Shell Finite Element

Abstract A double asymptotic approximation based finite element-cum-boundary element approach for fluid-structure interaction problems is being proposed. In particular a staggered solution scheme has been applied to the analysis of various coupled fluid-structure systems. A stabilization scheme by reformulation, proposed by DeRuntz et al. was employed to circumvent the instability problem. In addition, the singularity in the excitation term was eliminated through a variable transformation as suggested by Everstine. Another feature of the present work is its incorporation of the hybrid strain based lower order triangular shell finite element developed by To and Liu. The eigenvalue solution exhibits high convergence rate for the particular shell finite element employed. The responses calculated exhibit the effectiveness of the proposed approach with application of the aforementioned shell finite element in dealing with three dimensional fluid-structure interaction problems. The reduction in problem size that this approach affords allows these complex interaction problems to be dealt with in a desktop engineering workstation environment, as opposed to the mainframe and supercomputer arenas where they have been implemented in the past.

Quasi-Eulerian Finite Element Formulation for Fluid-Structure Interaction

1980 ◽  
Vol 102 (1) ◽  
pp. 62-69 ◽  
Author(s):  
T. Belytschko ◽  
J. M. Kennedy ◽  
D. F. Schoeberle
Keyword(s):  
Finite Element ◽  
Interaction Analysis ◽  
Fluid Structure Interaction ◽  
General Purpose ◽  
Element Formulation ◽  
Finite Element Program ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Eulerian Formulation ◽  
Element Program

A quasi-Eulerian formulation is developed for fluid-structure interaction analysis in which the fluid nodes are allowed to move independent of the material thus facilitating the treatment of problems with large structural motions. The governing equations are presented in general form and then specialized to two-dimensional plane and axisymmetric geometries. These elements have been incorporated in a general purpose transient finite element program and results are presented for two problems and compared to experimental results.

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