Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects
The probability of existence of defects, fatigue damage and crack growth in the offshore wind turbine support structures subjected to extreme waves and wind-induced loads is very high and may occur at a faster rate in a low cycle fatigue regime and crack growth, leading to a dramatic reduction in th...
Published in: | Volume 3: Structures, Safety and Reliability |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Society of Mechanical Engineers
2016
|
Subjects: | |
Online Access: | https://vbn.aau.dk/da/publications/199bfc5a-f236-4f51-bb8b-8995add9e249 https://doi.org/10.1115/OMAE2016-54240 http://www.scopus.com/inward/record.url?scp=84996508758&partnerID=8YFLogxK |
id |
ftalborgunivpubl:oai:pure.atira.dk:publications/199bfc5a-f236-4f51-bb8b-8995add9e249 |
---|---|
record_format |
openpolar |
spelling |
ftalborgunivpubl:oai:pure.atira.dk:publications/199bfc5a-f236-4f51-bb8b-8995add9e249 2024-10-13T14:03:44+00:00 Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects Yeter, Baran Garbatov, Yordan Guedes Soares, C. 2016 https://vbn.aau.dk/da/publications/199bfc5a-f236-4f51-bb8b-8995add9e249 https://doi.org/10.1115/OMAE2016-54240 http://www.scopus.com/inward/record.url?scp=84996508758&partnerID=8YFLogxK eng eng American Society of Mechanical Engineers https://vbn.aau.dk/da/publications/199bfc5a-f236-4f51-bb8b-8995add9e249 urn:ISBN:9780791849941 info:eu-repo/semantics/restrictedAccess Yeter , B , Garbatov , Y & Guedes Soares , C 2016 , Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects . in Structures, Safety and Reliability . , V003T02A060 , American Society of Mechanical Engineers , Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE , vol. 3 , ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2016 , Busan , Korea, Republic of , 19/06/2016 . https://doi.org/10.1115/OMAE2016-54240 contributionToPeriodical 2016 ftalborgunivpubl https://doi.org/10.1115/OMAE2016-54240 2024-09-19T00:52:40Z The probability of existence of defects, fatigue damage and crack growth in the offshore wind turbine support structures subjected to extreme waves and wind-induced loads is very high and may occur at a faster rate in a low cycle fatigue regime and crack growth, leading to a dramatic reduction in the service life of structures. It is therefore vital to assess the safety and reliability of offshore wind turbine support structures at sea. The aim of the present study is to carry out a low cycle fatigue and crack growth reliability analysis of an offshore wind turbine support structure during the service life. The analysis includes different loading scenarios and accounts for the uncertainties related to the structural geometrical characteristics, the size of the manufacturing and during the service life defects, crack growth, material properties, and model assumed in the numerical analyses. The probability of failure is defined as a serial system of two probabilistic events described by two limit state functions. The first one is related to a crack initiation based on the local strain approach and the second one on the crack growth applying the fracture mechanic approach. The first and second order reliability methods are used to estimate the reliability index and the effect of low cycle fatigue and crack growth on the reliability estimate of the offshore wind turbine support structure. The sensitivity analysis is performed in order to determine the degree of the significance of the random variables and several conclusions are derived. Article in Journal/Newspaper Arctic Aalborg University's Research Portal Volume 3: Structures, Safety and Reliability |
institution |
Open Polar |
collection |
Aalborg University's Research Portal |
op_collection_id |
ftalborgunivpubl |
language |
English |
description |
The probability of existence of defects, fatigue damage and crack growth in the offshore wind turbine support structures subjected to extreme waves and wind-induced loads is very high and may occur at a faster rate in a low cycle fatigue regime and crack growth, leading to a dramatic reduction in the service life of structures. It is therefore vital to assess the safety and reliability of offshore wind turbine support structures at sea. The aim of the present study is to carry out a low cycle fatigue and crack growth reliability analysis of an offshore wind turbine support structure during the service life. The analysis includes different loading scenarios and accounts for the uncertainties related to the structural geometrical characteristics, the size of the manufacturing and during the service life defects, crack growth, material properties, and model assumed in the numerical analyses. The probability of failure is defined as a serial system of two probabilistic events described by two limit state functions. The first one is related to a crack initiation based on the local strain approach and the second one on the crack growth applying the fracture mechanic approach. The first and second order reliability methods are used to estimate the reliability index and the effect of low cycle fatigue and crack growth on the reliability estimate of the offshore wind turbine support structure. The sensitivity analysis is performed in order to determine the degree of the significance of the random variables and several conclusions are derived. |
format |
Article in Journal/Newspaper |
author |
Yeter, Baran Garbatov, Yordan Guedes Soares, C. |
spellingShingle |
Yeter, Baran Garbatov, Yordan Guedes Soares, C. Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects |
author_facet |
Yeter, Baran Garbatov, Yordan Guedes Soares, C. |
author_sort |
Yeter, Baran |
title |
Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects |
title_short |
Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects |
title_full |
Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects |
title_fullStr |
Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects |
title_full_unstemmed |
Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects |
title_sort |
reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects |
publisher |
American Society of Mechanical Engineers |
publishDate |
2016 |
url |
https://vbn.aau.dk/da/publications/199bfc5a-f236-4f51-bb8b-8995add9e249 https://doi.org/10.1115/OMAE2016-54240 http://www.scopus.com/inward/record.url?scp=84996508758&partnerID=8YFLogxK |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Yeter , B , Garbatov , Y & Guedes Soares , C 2016 , Reliability of offshore wind turbine support structures subjected to extreme wave-induced loads and defects . in Structures, Safety and Reliability . , V003T02A060 , American Society of Mechanical Engineers , Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE , vol. 3 , ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2016 , Busan , Korea, Republic of , 19/06/2016 . https://doi.org/10.1115/OMAE2016-54240 |
op_relation |
https://vbn.aau.dk/da/publications/199bfc5a-f236-4f51-bb8b-8995add9e249 urn:ISBN:9780791849941 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1115/OMAE2016-54240 |
container_title |
Volume 3: Structures, Safety and Reliability |
_version_ |
1812808875998445568 |