Effect of Ice Sheet on Stochastic Response of Offshore Wind Turbine-Seawater-Soil Interaction Systems Subjected to Random Seismic Excitation

• Published in: Journal of Cold Regions Engineering
• Main Authors: Haciefendioglu, Kemal, Bayraktar, Alemdar
• Other Authors: Ondokuz Mayıs Üniversitesi
• Format: Article in Journal/Newspaper
• Language: English
• Published: Asce-Amer Soc Civil Engineers 2011
• Subjects: Offshore wind turbine; Ice sheet; Fluid-structure interaction; Stochastic dynamic; Lagrangian approach; Random seismic excitation; Ice Sheet
• Online Access: https://hdl.handle.net/20.500.12712/17048; https://doi.org/10.1061/(ASCE)CR.1943-5495.0000027

Professor Alemdar BAYRAKTAR, BSc/0000-0002-8973-9228 WOS: 000294778800003 To investigate the effect of the presence of surrounding ice sheet on the stochastic response of offshore wind turbines subjected to random seismic excitation, this research uses a three-dimensional, numerical, finite-element model that includes viscous boundaries. The model of the ice-seawater-offshore wind turbine-soil interaction system uses the Lagrangian fluid (displacement-based) and solid-quadrilateral-isoparametric finite elements. Random seismic excitation from a filtered white-noise model and applied to each support point of the three-dimensional finite-element model of the coupled interaction system provides the experimental environment. A parametric study examines the effects of both the presence of and variation in mechanical and geometric properties of the surrounding ice sheet on the stochastic response of offshore wind turbines. The investigation also includes the effect of the wind turbine's wall thickness in relation to the ice sheet on the stochastic seismic response of the coupled interaction system. DOI:10.1061/(ASCE)CR.1943-5495.0000027. (C) 2011 American Society of Civil Engineers.