Wind Induced Response Analysis Of Membrane-cable Structures In Fluid-structure Interaction

In this paper, the basic unit of cable-membrane structure and membrane cable element formula was derived by using nonlinear finite element method and updated Lagrange equation, the initial equilibrium shape of saddle-shaped cable-membrane structure was determined, the impact of different structural parameters on the saddle-shaped cable-membrane vibration characteristics was studied.Based on the basic theory and calculation method of wind engineering, wind loads was numerically simulated, this paper introduces an arbitrary Lagrange-Euler (ALE) description, the turbulence model for incompressible turbulent flow equations and the corresponding the boundary conditions, structural dynamics equations and corresponding boundary conditions and interface coupling conditions were described.In the case of saddle-shaped cable-membrane structure, considering coupling with the dynamic response of wind load, using ANSYS software, considering the undeformed structure as the calculation of fluid borders, fluid flow field was solved and the structure surface pressure was derived.The pressure acted on the structure, so that the structure deformed.According to the deformed structure, the calculation of fluid borders and grid was changed, fluid was calculated again.The result of coupling analysis was getting accurate by the way of repeat iteration.