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http://dx.doi.org/10.7736/KSPE.2012.29.11.1236

Study on Application of Equivalent Stiffness Modeling Method for Static Aeroelastic Analysis of Large Scale Wind Turbine Rotor System  

Cha, Jin-Hyun (Department of Aerospace Engineering, Pusan National Univ.)
Ku, Tae-Wan (Industrial Liaison Innovation Center, Pusan National Univ.)
Kim, Jeong (Department of Aerospace Engineering, Pusan National Univ.)
Kang, Beom-Soo (Department of Aerospace Engineering, Pusan National Univ.)
Song, Woo-Jin (Industrial Liaison Innovation Center, Pusan National Univ.)
Publication Information
Journal of the Korean Society for Precision Engineering / v.29, no.11, 2012 , pp. 1236-1244 More about this Journal
Abstract
A equivalent stiffness modeling has been performed for extracting the equivalent stiffness properties which are orthotropic elastic model from a large scale wind turbine rotor blade so that structure model can be constructed more simply for the three dimensional static aeroelastic analysis. In order to present the procedure of equivalent stiffness modeling, NREL 5MW class wind turbine rotor having the three stiffness information which are flapewise, edgewise and torsional stiffness was chosen. This method is based on applying unit moment at the tip of the blade as well as fixing all degree of freedom at the blade root and calculating the displacement from the load analysis to obtain the elastic modulus corresponding to equivalent stiffness referred to the NREL reports on blade divided into 5 sections respectively. In addition, one section was divided into 3 parts and the trend functions were used to make the equivalent stiffness model more correctly and quickly. Through the comparison of stiffness between the reference values and calculated values from equivalent stiffness model, the investigation of the accuracy on the stiffness values and the efficiency for constructing the model was conducted.
Keywords
Equivalent Stiffness Model; Wind Turbine Rotor System; Aeroelastic Analysis;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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