Abstract
According as introduction of wind power generation growth, the necessity of detail structural analyses of wind turbines is increasing in recent years. In addition, there are various wind turbine design codes that can be used to estimate wind turbine behavior. However, the number of degrees of freedom that can be modeled by many of the design codes is limited in order to execute efficient calculation. In this study, we developed an original code for wind turbine dynamic response simulations. The code is based on the finite element method which adopts a direct integration method and it can take geometrical nonlinearity including finite rotation into account for modeling turbine rotation. In this paper, an outline of developed code functions is shown and wind turbine behaviors are analyzed to verify the functions. The results calculated by the developed code are in fairly good agreements with the results obtained in terms of an existing design code FAST.
