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http://dx.doi.org/10.5000/EESK.2013.17.6.257

Earthquake Response Analysis of an Offshore Wind Turbine Considering Effects of Geometric Nonlinearity of a Structure and Drag Force of Sea Water  

Lee, Jin Ho (Korea Railroad Research Institute, Super Speed Maglev Train Research Team)
Bae, Kyung Tae (Daewoo E&C, Institute of Construction Technology, Civil Engineering Research Team)
Jin, Byeong Moo (Daewoo E&C, Institute of Construction Technology, Civil Engineering Research Team)
Kim, Jae Kwan (Seoul National University, Department of Civil and Environmental Engineering)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.17, no.6, 2013 , pp. 257-269 More about this Journal
Abstract
In this study, the capability of an existing analysis method for the fluid-structure-soil interaction of an offshore wind turbine is expanded to account for the geometric nonlinearity and sea water drag force. The geometric stiffness is derived to take care of the large displacement due to the deformation of the tower structure and the rotation of the footing foundation utilizing linearized stability analysis theory. Linearizing the term in Morison's equation concerning the drag force, its effects are considered. The developed analysis method is applied to the earthquake response analysis of a 5 MW offshore wind turbine. Parameters which can influence dynamic behaviors of the system are identified and their significance are examined.
Keywords
Offshore wind turbine; Earthquake response; Geometric nonlinearity; Drag force; Fluid-structure interaction; Soil-structure interaction;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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