Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.enganabound.2010.05.003
Title: A coupled ES-FEM/BEM method for fluidstructure interaction problems
Authors: He, Z.C.
Liu, G.R. 
Zhong, Z.H.
Zhang, G.Y.
Cheng, A.G.
Keywords: Boundary element method (BEM)
Edge-based smoothed finite element method (ES-FEM)
Finite element method (FEM)
Fluidstructure interaction
Meshfree methods
Numerical methods
Issue Date: Jan-2011
Source: He, Z.C., Liu, G.R., Zhong, Z.H., Zhang, G.Y., Cheng, A.G. (2011-01). A coupled ES-FEM/BEM method for fluidstructure interaction problems. Engineering Analysis with Boundary Elements 35 (1) : 140-147. ScholarBank@NUS Repository. https://doi.org/10.1016/j.enganabound.2010.05.003
Abstract: The edge-based smoothed finite element method (ES-FEM) developed recently shows some excellent features in solving solid mechanics problems using triangular mesh. In this paper, a coupled ES-FEM/BEM method is proposed to analyze acoustic fluidstructure interaction problems, where the ES-FEM is used to model the structure, while the acoustic fluid is represented by boundary element method (BEM). Three-node triangular elements are used to discretize the structural and acoustic fluid domains for the important adaptability to complicated geometries. The smoothed Galerkin weak form is adopted to formulate the discretized equations for the structure, and the gradient smoothing operation is applied over the edge-based smoothing domains. The global equations of acoustic fluidstructure interaction problems are then established by coupling the ES-FEM for the structure and the BEM for the fluid. The gradient smoothing technique applied in the structural domain can provide the important and right amount of softening effects to the "overly-stiff" FEM model and thus improve the accuracy of the solutions of coupled system. Numerical examples of acoustic fluidstructure interaction problems have been used to assess the present formulation, and the results show that the accuracy of present method is very good and even higher than those obtained using the coupled FEM/BEM with quadrilateral mesh. © 2010 Elsevier Ltd. All rights reserved.
Source Title: Engineering Analysis with Boundary Elements
URI: http://scholarbank.nus.edu.sg/handle/10635/54043
ISSN: 09557997
DOI: 10.1016/j.enganabound.2010.05.003
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