Computational simulation on wind-induced vibration of membrane structures

A computeraided simulation approach for windinduced response analysis of membrane structures is presented in this paper, which can be entitled "numerical wind tunnel method". The numerical simulation of the dynamic fluidstructure interaction is performed by a partitioned solution approach. A TaylorGalerkin method is adopted for finite element solution of the unsteady NavierStokes equations and using Large Eddy Simulation method for turbulence. It is adapted to moving grids by an Arbitrary LagrangianEulerian (ALE) formulation. The dynamic nonlinear structural response is described by Update Lagrangian formulation and an implicit timestepping procedure is adopted. The timedependent simulation process is controlled by an iteration procedure between the CFD and CSD simulation until convergence is reached within each timestep. Finally, the coupled algorithm is applied to some geometrically simple test case to validate the interaction scheme.