Publicações

Yeter, B., Garbatov, Y. e Guedes Soares, C. (2016), “Evaluation of fatigue damage model predictions for fixed offshore wind turbine support structures”, International Journal of Fatigue, Vol. 87, pp. 71-80

This work deals with the spectral fatigue damage assessment of a tripod offshore wind turbine supporting structure analysed under combined wave and wind induced loading. Sea states are defined based on a wave scatter diagram and the stress spectrum is defined accordingly. The structure is subjected to random stresses and fatigue damage assessment is performed several fatigue damage models including the Rayleigh, Wirsching-Light, Tunna, á0.75, Tovo and Benasciutti, Zhao-Baker, Rice and Dirlik models. Critical hotspot locations, which experience the most cumulative fatigue damage, are analysed based on the finite element method and the S-N fatigue damage approach. The time domain solution based on the rain flow cycle counting method is assumed to be the “real” data and the model that best fits the fatigue damage of the wind turbine supporting structure is identified with the Akaike’s Information Criterion.

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