Computational simulation on wind-induced vibration of membrane structures
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A computeraided simulation approach for windinduced response analysis of membrane structures is presented in this paper, which can be entitled "numerical wind tunnel method". The numerical simulation of the dynamic fluidstructure interaction is performed by a partitioned solution approach. A TaylorGalerkin method is adopted for finite element solution of the unsteady NavierStokes equations and using Large Eddy Simulation method for turbulence. It is adapted to moving grids by an Arbitrary LagrangianEulerian (ALE) formulation. The dynamic nonlinear structural response is described by Update Lagrangian formulation and an implicit timestepping procedure is adopted. The timedependent simulation process is controlled by an iteration procedure between the CFD and CSD simulation until convergence is reached within each timestep. Finally, the coupled algorithm is applied to some geometrically simple test case to validate the interaction scheme.