Abstract
Offshore wind turbines are slender structures with sensitive dynamics, strongly influenced by soil-structure interaction. The structure is subjected to cyclic and dynamic loads with frequencies close to the first natural frequency of the offshore wind turbine. To avoid resonance phenomenon due to external excitations, it is essential to precisely evaluate the initial first natural frequency of the wind turbine and its long term evolution. The present work deals with the design and analysis of a scaled model of an offshore wind turbine with monopile foundation. This study is aimed at experimental evaluation of the initial first natural frequency of this scaled model, followed by the comparison of experimental results with those obtained from the existing analytical models.
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