Techno Press

Wind and Structures   Volume 3, Number 4, December 2000, pages 291-302
A new ALE finite element techniques for wind-structure interactions
Chang-Koon Choi and Won-Jin Yu(Korea)

Abstract     [Full Text]
    A new finite element technique to solve the problem of wind and structure interactions isrnpresented. Conventionally, wind analysis is performed on the Eulerian description in which the finiternelement mesh would not move in accordance with the wind flow. However, it is not the case in wind-structurerninteraction problems because nodes attached to the surface of structure should move with therndisplacement of structure. The arbitrary Lagrangian-Eulerian (ALE) method treats the mesh and flowrnindependently, and allow the mesh to move. In this study, the analysis domain is divided into regions ofrnthe structure, air around the structure and the interface of two regions. To satisfy the compatibility andrnequilibrium conditions between separated regions and to carry out the efficient analysis, the rigid link isrnused. Also the equation of wind and that of structure are arranged in a single matrix equation.
Key Words
Chang-Koon Choi and Won-Jin Yu, Department of Civil Engineering, KAIST, Taejon 305-701, Korea

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