Third M.I.T. Conference on Computational Fluid and Solid Mechanics June 14–17, 2005  

Model-adaptive structural FEM computations for fluid-structure interaction

D. Scholz, A. Düster, E. Rank*
Lehrstuhl für Bauinformatik, Technische Universität München, Germany

  Full Text
A numerical approach to model thin-walled structures with anisotropic high-order finite hexahedral elements is presented. With an appropriate variation of the polynomial degrees an efficient discretization of a structural dynamic problem is found and then applied to a coupled fluid-structure interaction computation. Since a quasi-optimal choice of the polynomial degrees for every element as well as for every local direction of each element is highly desirable, an automatic p-adaptive method is presented and its effectivity is demonstrated with a numerical example.

Keywords:  Model-adaptivity; FEM; P-adaptivity; Structural dynamics; Thin-walled structures; Fluid-structure interaction

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