Abstract:
Introduction Due to the time variability and randomness of load, the fatigue problem of grouted connections in offshore wind power is serious and it is necessary to research into the fatigue performance of grouted connections to ensure its safety operation.
Method Based on the finite element numerical model, the Markov load matrix was transformed into the stress at the key position of the grouted connections in this study, and combined with the S-N curve of materials and the linear cumulative damage rule, the fatigue performance of the grouted connections was evaluated.
Result The finite element model of grouted connections shows that the cumulative damage of steel materials under axial load is greater than that of grouting materials, but less than the limit of DNV specification.
Conclusion This study shows that fatigue failure will not occur in the two materials in the grouted connections under the specific load, the structure of turbine is safe, and the analysis method is effective.
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