Accurate lifetime predictions are needed for support structures of offshore wind turbines to optimize operation and maintenance and to decide about lifetime extension of aging wind farms. A comparison of a facture mechanics model to the SN-curve approach for jacket supported offshore wind turbines shows that it is attractive for lifetime extension decisions; however major challenges are calibration of material parameters and assumptions for initial crack size. Crack growths on a Y-joint connecting brace and jacket leg was analysed with simulations of structural response to aero- and hydrodynamic loading and Paris’ law for crack propagation. The model was calibrated to yield an identical fatigue life as obtained from the SN-curve analysis. The effect of weather seasonality on crack growth was evaluated with a Markov weather model and Monte Carlo simulations. Results show that crack growth is sensitive to parameter calibration and follows seasonal weather trends.
Skip Nav Destination
Close
Sign In or Register for Account
ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2016
Busan, South Korea
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4997-2
PROCEEDINGS PAPER
Comparing a Fracture Mechanics Model to the SN-Curve Approach for Jacket-Supported Offshore Wind Turbines: Challenges and Opportunities for Lifetime Prediction
Michael Muskulus
Michael Muskulus
Norwegian University of Science and Technology, Trondheim, Norway
Search for other works by this author on:
Lisa Ziegler
Ramboll Wind, Hamburg, Germany
Michael Muskulus
Norwegian University of Science and Technology, Trondheim, Norway
Paper No:
OMAE2016-54915, V006T09A054; 10 pages
Published Online:
October 18, 2016
Citation
Ziegler, L, & Muskulus, M. "Comparing a Fracture Mechanics Model to the SN-Curve Approach for Jacket-Supported Offshore Wind Turbines: Challenges and Opportunities for Lifetime Prediction." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 6: Ocean Space Utilization; Ocean Renewable Energy. Busan, South Korea. June 19–24, 2016. V006T09A054. ASME. https://doi.org/10.1115/OMAE2016-54915
Download citation file:
- Ris (Zotero)
- Reference Manager
- EasyBib
- Bookends
- Mendeley
- Papers
- EndNote
- RefWorks
- BibTex
- ProCite
- Medlars
Close
Sign In
26
Views
0
Citations
Related Proceedings Papers
Related Articles
Dynamic Structural Integrity Assessment for Offshore Structures
J. Offshore Mech. Arct. Eng (November,2004)
Research of Underfill Delamination in Flip Chip by the J -Integral Method
J. Electron. Packag (March,2004)
Fatigue Crack Growth Analyses of Offshore Structural Tubular Joint
J. Offshore Mech. Arct. Eng (February,1989)
Related Chapters
On the Exact Analysis of Non-Coherent Fault Trees: The ASTRA Package (PSAM-0285)
Proceedings of the Eighth International Conference on Probabilistic Safety Assessment & Management (PSAM)
Design and Application of Prestress Drill-Grouted Diaphragm Wall in the Foundation Pit Bracing
Geological Engineering: Proceedings of the 1 st International Conference (ICGE 2007)
Numerical Simulation of Spatial Synergic Interaction in the Double-Row Anti-Sliding Piles
Geological Engineering: Proceedings of the 1 st International Conference (ICGE 2007)