Numerical Simulation of a Model Monopile Test for LargeOffshore Wind Turbine Subjected to Cyclic Loading
Bildiriler > Tam Metin Bildiri · 2025
Yazarlar: MEHMET FAHRETTİN ERENER, CİHAN TAYLAN AKDAĞ, Devrim Şüfa ERDOĞAN, Tuğçe TUFAN ERENER
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG), Fransa, Nantes, Uluslararası, Sözlü Sunum, Tam Metin Bildiri, 2025-2025, ss 1801-1807
Özet
<p>Experimental and numerical studies play a crucial role in the studies of understanding the long-term behavior of offshore wind turbines (OWTs) with monopile foundation under cyclic loading conditions. In this study, numerical simulations of a model test, which corresponded to a 9-meter-diameter prototype monopile foundation for an OWT with an 8 MW capacity, were performed using OpenSeesPL. Pressure Dependent Multi-Yield Surface Plasticity Model (PDMY) was used to represent undrained soil behavior of sand. The effects of mesh size and the soil backbone curve on the pile response were assessed under cyclic loading conditions. It was observed that soil elements with backbone curves at low mean effective stress levels showed better agreement with test results in terms of pile displacements and rotations around pile head level due to lower effective stresses in this region. The study showed that mesh size and backbone curve characteristics were interrelated in determining the lateral pile response. </p>