Experimental and numerical study on ice-induced vibration control of jacket-type offshore wind turbine using tuned mass damper

Cold sea regions possess abundant wind energy resources. To ensure the smooth development of wind energy in cold regions, vibration control of offshore wind turbines (OWTs) under ice loading is particularly important. The tuned mass damper (TMD) has demonstrated outstanding performance in reducing the vibrations of OWT caused by earthquakes and wind loads, but there have been no experimental studies on its effectiveness in mitigating vibrations caused by ice loads. Consequently, this study investigates the application of TMD for vibration control of OWTs subjected to ice loads. The TMD's efficacy was first assessed using ABAQUS software simulations combined with harmonic displacement loading experiments. The tests showed that the peak displacement and acceleration were reduced by 26.32 % and 29.31 %, respectively. The finite element simulations indicated that the peak displacement and acceleration decreased by 30.44 % and 34.43 %. Subsequently, six OWT tests under natural ice loads were conducted to analyse displacement, acceleration, and strain. The TMD achieved maximum vibration reduction effects of 49.8 %, 58.66 %, and 61.7 % for peak displacement, acceleration, and strain, respectively. This study provides experimental evidence for the application of TMD in mitigating ice-induced vibrations in OWTs, contributing to the advancement of offshore wind energy development in cold sea regions.