Calculation of Effective Section Properties for Wind Turbine Blades
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The structural behavior of wind turbine blades can be accurately modeled using beam models. The accuracy in the predictions using beams models depends on the degree of accuracy in the prediction of the effective section properties. A simple, efficient and robust method is developed for the prediction of effective section properties for prismatic slender members of any arbitrary cross section shape. The technique, which is based on the superposition principle is developed to include the shear deformation modes in predicting the effective properties. A homogenization scheme based on strain energy equivalence is employed for calculating the effective properties. The method can accurately predict the full stiffness matrix including the off-diagonal terms. The results for three different cross section shapes are validated using full 3D analysis and an existing analysis technique. Copyright © 2011 by Yellavenkatasunil Jonnalagadda.
author list (cited authors)
Jonnalagadda, Y., & Whitcomb, J.