Seismic Transient Simulation of an Operating Wind Turbine Considering the Soil-Structure-Interaction

GUSTAVO A. RÍOS RODRIGUEZ; MARCO SCHAUER; FRANCESCA TADDEI

Lyon

Conferencia; International Conference on Recent Advances in Structural Dynamics (RASD 2019); 2019

Institute of Sound and Vibration Research - University of Southampton

In this contribution we present a strategy to investigate the vibrations of onshore wind turbines subjected to simultaneous aerodynamic loads and seismic loads. The latter result from the propagation of seismic waves through the underlying soil and are governed by the Lamé?s equations. The structure and its foundation as well as parts of the soil are modeled by Finite Element Method (FEM). The infinite half-space is discretized by Scaled Boundary Finite Element Method (SBFEM). Both methods are coupled at the common interface. The seismic excitation is expressed as a 3D seismic wave field and transformed into boundary tractions, which are then applied at the interface between the near and far fields. The aerodynamic actions are generated with an additional aerodynamic tool and are applied at the tower head.The proposed method can be used also to investigate the 3D nonlinear response of the nearfield, where nonlinear material properties can be assigned to any element of FEM part.