Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008 |
| Pages | I |
| Publication status | Published - 2008 |
| Event | 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008 - Vancouver, BC, Canada Duration: 6 Jul 2008 → 11 Jul 2008 |
Publication series
| Name | Proceedings of the International Offshore and Polar Engineering Conference |
|---|---|
| ISSN (Print) | 1098-6189 |
| ISSN (electronic) | 1555-1792 |
Abstract
The influence of local joint flexibilities on both structural behavior as well as fatigue loads was studied. Two different approaches to include the joint flexibilities in structural analyses were presented, i.e., the Buitrago approach, which uses parametric formulae depending on certain joint types and geometries, and the substructuring approach, which deals with arbitrary geometries. The effect on the dynamic structural behavior was negligible in the region of low global eigenfrequencies that were excited by wind and wave loads on offshore wind turbines. However, for higher local modes that could be excited by the operation of the turbines, the effect could be much more significant. Due to the change in distribution of member forces, especially of the bending moments, within the structures caused by the local joint flexibilities, this had a significant influence on the fatigue loading of the joints. At the example of the research platform FINO 1, the damage equivalent moments at the joints could be reduced by up to 40% if local joint flexibilities were incorporated in the structural model. This is an abstract of a paper presented at the Eighteenth International Offshore and Polar Engineering Conference (Vancouver, Canada 7/6-11/2008).
Keywords
- Fatigue, FE Analysis, Local Joint Flexibility, Wind Energy
ASJC Scopus subject areas
- Energy(all)
- Energy Engineering and Power Technology
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
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Proceedings of the 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008. 2008. p. I (Proceedings of the International Offshore and Polar Engineering Conference).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Numerical consideration of local joint flexibilities
AU - Schaumann, Peter
AU - Böker, Cord
PY - 2008
Y1 - 2008
N2 - The influence of local joint flexibilities on both structural behavior as well as fatigue loads was studied. Two different approaches to include the joint flexibilities in structural analyses were presented, i.e., the Buitrago approach, which uses parametric formulae depending on certain joint types and geometries, and the substructuring approach, which deals with arbitrary geometries. The effect on the dynamic structural behavior was negligible in the region of low global eigenfrequencies that were excited by wind and wave loads on offshore wind turbines. However, for higher local modes that could be excited by the operation of the turbines, the effect could be much more significant. Due to the change in distribution of member forces, especially of the bending moments, within the structures caused by the local joint flexibilities, this had a significant influence on the fatigue loading of the joints. At the example of the research platform FINO 1, the damage equivalent moments at the joints could be reduced by up to 40% if local joint flexibilities were incorporated in the structural model. This is an abstract of a paper presented at the Eighteenth International Offshore and Polar Engineering Conference (Vancouver, Canada 7/6-11/2008).
AB - The influence of local joint flexibilities on both structural behavior as well as fatigue loads was studied. Two different approaches to include the joint flexibilities in structural analyses were presented, i.e., the Buitrago approach, which uses parametric formulae depending on certain joint types and geometries, and the substructuring approach, which deals with arbitrary geometries. The effect on the dynamic structural behavior was negligible in the region of low global eigenfrequencies that were excited by wind and wave loads on offshore wind turbines. However, for higher local modes that could be excited by the operation of the turbines, the effect could be much more significant. Due to the change in distribution of member forces, especially of the bending moments, within the structures caused by the local joint flexibilities, this had a significant influence on the fatigue loading of the joints. At the example of the research platform FINO 1, the damage equivalent moments at the joints could be reduced by up to 40% if local joint flexibilities were incorporated in the structural model. This is an abstract of a paper presented at the Eighteenth International Offshore and Polar Engineering Conference (Vancouver, Canada 7/6-11/2008).
KW - Fatigue
KW - FE Analysis
KW - Local Joint Flexibility
KW - Wind Energy
UR - http://www.scopus.com/inward/record.url?scp=58649090689&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:58649090689
SN - 9781880653708
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - I
BT - Proceedings of the 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008
T2 - 18th 2008 International Offshore and Polar Engineering Conference, ISOPE 2008
Y2 - 6 July 2008 through 11 July 2008
ER -