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Abstract This paper proposes a multi-level system modeling for studying the structural behavior of an Offshore Wind Turbine (OWT) with a flexible monopile foundation considering the Pile-Soil Interaction (PSI). This analysis shows that the structural response is affected by a significant uncertainty due to the randomness of the geometric and mechanical properties of the tower and foundation and by the environmental loads and rotating blades. With a Monte Carlo simulation, the sources of uncertainty of the so-called “environmental” and “exchange” zones are generated for a Performance-Based Wind Engineering (PBWE) design of OWTs. Hence, the structural response, the stresses along the foundation, and the power production are evaluated in probabilistic terms assisting the optimal design process of a Pendulum Tuned Mass Damper (PTMD) used to mitigate the structural vibration of an OWT.
Colherinhas et al. (Sat,) studied this question.