Wind and soil model influences on the uncertainty in fatigue of monopile supported wind turbines

Several alternative engineering models are available for the use in analysis of offshore wind turbines. However, it is not always clear which will yield most accurate or sufficiently conservative results. This paper investigates effect using two soil-structure interaction and coherence models. The focus on assessing how these modelling choices influence predicted long-term fatigue damage support structure. soil a macro-element model p-y-curve with Rayleigh damping. gives differences both damping stiffness properties turbine model. between tend to decrease as size increases. considered Kaimal spectrum exponential Mann uniform shear turbulence predicts highest response at low frequencies, while predictions higher frequencies. Which then determined by natural rotor blade passing frequencies different