Coupling analysis of wind-induced responses of cylindrical structure based on beam-rigid element model.

An approximate model of wind-induced responses of the cylindrical structure is proposed based on the beam-rigid element method, and the weak fluid-structure interaction analysis is executed by using the FLUENT code of computational fluid dynamics (CFD) technology combined with dynamic meshing method, and the precise integration method is employed to improve the computational efficiency. The top displacement and acceleration of a 3-D cylindrical structure under different wind speeds are compared based on the proposed beam-rigid element approximate model, rigid model and elastic model. The experimental results show that the increment of wind speed nonlinearly increases the amplitude of across-wind vibration. For the rigid model, the neglect of coupling between fluid and structure may lead to bigger errors. [ABSTRACT FROM AUTHOR]