Fatigue Design bei Offshore-Windenergieanlagen

This paper compares concepts for the fatigue design of offshore wind energy conversion systems (OWECS). After a description of several types of support structures for OWECS, different methods for the fatigue design of these structures under wave loading are described. Possible concepts are the deterministic approach, the calculation in the time domain or in the frequency domain. As the nominal stress approach can hardly be applied to the joints of braced or lattice structures, local approaches to the fatigue assessment of welded joints have to be used.