Abstract
This paper describe a probabilistic approach to reliability assessment of fatigue critical welded details in jacket support structures for offshore wind turbines. The analysis of the jacket response to the operational loads is performed using Finites Element Method (FEM) simulations in SIMULIA Abaqus. Fatigue stress cycles are computed on the jacket members by applying tower top loads from an aeroelastic simulation with superimposed marine loads and in accordance to the IEC-61400-3 guidelines for operational conditions. The combined effect of the hydrodynamic loads and the rotor loads on the jacket structure is analyzed in a de-coupled scheme, but including the structural dynamicsw of the support structure. The failure prediction of the welded joints, connecting the individual members of the support structure is based on SN-curves and Miners rule according to ISO 19902 and DNV-RP-C203/DNV-OS-J101. Probabilistic SN-Curves and a stochastic model for Miners rule is used to estimate the reliability of selected critical welded details in the jacket structure taken into account the uncertainty in the fatigue stresses.
| Original language | English |
|---|---|
| Title of host publication | ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering : Structures, Safety and Reliability |
| Number of pages | 9 |
| Volume | 2B |
| Publisher | American Society of Mechanical Engineers |
| Publication date | 2013 |
| ISBN (Print) | 978-0-7918-5533-1 |
| DOIs | |
| Publication status | Published - 2013 |
| Event | ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering - Nantes, France Duration: 9 Jun 2013 → 14 Jun 2013 Conference number: 32 |
Conference
| Conference | ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering |
|---|---|
| Number | 32 |
| Country/Territory | France |
| City | Nantes |
| Period | 09/06/2013 → 14/06/2013 |
Keywords
- Reliability Assessment
- Welded Details
- Wind Turbine
- Support Structures
- Jacket Structure