An eXtended Finite Element Method/Lagrange multiplier based approach for fluid-structure interaction

被引：217
|
作者：
Gerstenberger, Axel [1 ]
Wall, Wolfgang A. [1 ]
机构：
[1] Tech Univ Munich, Chair Computat Mech, D-85747 Garching, Germany
来源：
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2008年 / 197卷 / 19-20期
关键词：
fluid-structure interaction; eXtended finite element method; fixed grid; domain decomposition; mortar method; Lagrange multiplier;
D O I：
10.1016/j.cma.2007.07.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents a new fixed grid fluid-structure interaction scheme that can be applied to the interaction of most general structures with incompressible flow. It is based on an eXtended Finite Element Method (XFEM) based strategy. The extended Eulerian fluid field and the Lagrangian structural field are partitioned and iteratively coupled using Lagrange multiplier techniques for non-matching grids. The approach allows the simulation of the interaction of thin and bulky structures exhibiting large deformations. Finally, qualitative examples and a benchmark computation demonstrate key features and accuracy of the method. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1699 / 1714
页数：16
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