Fatigue Testing of Support Structure for Offshore Wind Turbine

  Method  Static and fatigue tests of A1/5 scale simplified support structure model were carried out to obtain their hot spot stress and fatigue life. Finite element analysis for the test model was conducted with different element type according to DNV rules. Fatigue damage obtained from experimental tests was compared with that calculated by numerical simulations.

  Result  The results show that the main discrepancy between test results and specification methods is the selection of S-N curves.

  Conclusion  Finally， on the basis of experimental data and DNV rules， two different methods for evaluating the fatigue damage of transition piece are given. This work provides some guidance for further application.