On a Mode Superposition Method for Fluid-structure Interaction Problems
نویسنده
چکیده
In this paper, we present a mode superposition method for uid-structure interaction problems based on velocity potential and pressure formulation for acoustic uids and displacement formulation for solids. The eeectiveness of the proposed numerical procedure is demonstrated in a test example with seismic ground motion eeects. 1 INTRODUCTION Fluid-structure interaction systems are widely used in various industrial applications (1) (2). A number of nite element formulations have been proposed to model an acoustic uid for the analysis of uid-structure interaction problems , namely, the displacement formulation (see Bathe and Hahn (3), Hamdi, et al. (4), Olson and Bathe (5), Bathe et al. (6), Wang and Bathe (7) (8)), the displacement potential and pressure formulation, and the velocity potential and pressure formulation (Morand and Ohayon (9), Evers-tine (10), Olson and Bathe (11), Felippa and Ohayon (12), MacNeal et al. (13)). A recent review of various approaches for uid-structure interaction problems is available in Ref. (14).
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