Abstract
The main failure modes of modern large wind turbines are fatigue failure of wings, hub, shaft and main tower, local buckling of main tower, and failure of the foundation. This paper considers reliability-based optimal design of wind turbines. Compared to onshore wind turbines and building structures, humans spent little time in the vicinity of offshore wind turbines and the probability of human injury during storm conditions is small. Further environmental pollution will also in general be small in case of failure. One could therefore argue that the reliability level of offshore wind turbines can be lower than for onshore wind turbines and other civil engineering structures and can be assessed by reliability-based cost-optimization. Specifically this paper considers the main tower and foundation. Both fatigue and ultimate strength failure modes are included. Different formulations of the objective function are considered.
Original language | English |
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Title of host publication | Safety and Reliability of Engineering Systems and Structures : Proceedings of the 9th International Conference on Structural Safety and Reliability |
Editors | G. Augusti, G.I. Schuëller, M. Ciampoli |
Number of pages | 8 |
Place of Publication | Holland |
Publisher | Millpress |
Publication date | 2005 |
Pages | 1423-1430 |
ISBN (Electronic) | 90 5966 040 4 |
Publication status | Published - 2005 |
Event | 9th International Conference on Structural Safety and Reliability, ICOSSAR 2005 - Rom, Italy Duration: 19 Jun 2005 → 23 Jun 2005 |
Conference
Conference | 9th International Conference on Structural Safety and Reliability, ICOSSAR 2005 |
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Country/Territory | Italy |
City | Rom |
Period | 19/06/2005 → 23/06/2005 |
Bibliographical note
Published on cdKeywords
- Offshore Wind Turbines
- Reliability Analysis
- Reliability-Based Optimization
- Reliability Level