000022038 001__ 22038
000022038 005__ 20170622145953.0
000022038 04107 $$aeng
000022038 046__ $$k2015-05-25
000022038 100__ $$aBilionis, Dimitrios V.
000022038 24500 $$aPROPABILISTIC FATIGUE ANALYSIS OF OFFSHORE WIND TURBINES

000022038 24630 $$n5.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000022038 260__ $$bNational Technical University of Athens, 2015
000022038 506__ $$arestricted
000022038 520__ $$2eng$$aWind Turbines constitute a sustainable and effective solution for the production of energy using wind power. Offshore wind turbines especially are becoming of special interest. However, their design poses great challenges, since an offshore structure is subject to combined wind and wave dynamic loading that is characteristic of the site of installation. The purpose of this paper is to provide a case study of fatigue life assessment for the cross-section at mudline (foundation) of a standard offshore wind turbine with a monopile design, under a probabilistic framework and assuming the thickness of the examined cross-section as the design variable. Two potential sites of construction in the Aegean Sea of Greece were examined. A probabilistic approach was employed in order to determine the fatigue life based on anemological data at each of the two sites of interest. At its basis is an extensive Monte Carlo simulation of wind (velocity) and wave (height, period) characteristics. The results show the dependence of fatigue life on the local wind and wave conditions, the cross-section geometry (i.e. the thickness of the foundation’s pile) and the welded connection detail. All in all, the more benign conditions in the Aegean allow simpler connection details and smaller thickness of foundation pile’s cross-section to still have acceptable performance.

000022038 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000022038 653__ $$aOffshore Wind Turbine, Monopile Design, Fatigue, Aegean Sea

000022038 7112_ $$aCOMPDYN 2015 - 5th International Thematic Conference$$cCrete (GR)$$d2015-05-25 / 2015-05-27$$gCOMPDYN2015
000022038 720__ $$aBilionis, Dimitrios V.$$iVamvatsikos, Dimitrios
000022038 8560_ $$ffischerc@itam.cas.cz
000022038 8564_ $$s854491$$uhttps://invenio.itam.cas.cz/record/22038/files/C1049.pdf$$yOriginal version of the author's contribution as presented on CD, section: 
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000022038 962__ $$r22030
000022038 980__ $$aPAPER