Assessing the Importance of Nonlinearities in the Development of a Substructure Model for the Wind Turbine CAE Tool FAST: Preprint

Design and analysis of wind turbines are performed using aero-servo-elastic tools that account for the nonlinear coupling between aerodynamics, controls, and structural response. The NREL-developed computer-aided engineering (CAE) tool FAST also resolves the hydrodynamics of fixed-bottom structures...

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Bibliographic Details
Main Authors: Damiani, R., Jonkman, J., Robertson, A., Song, H.
Other Authors: Wind and Hydropower Technologies Program (U.S.)
Format: Article in Journal/Newspaper
Language:English
Published: National Renewable Energy Laboratory (U.S.) 2013
Subjects:
Fast Modeling
Jacket Modeling
Offshore Wind Turbine
Substructure Modeling
Wind Energy
17 Wind Energy Offshore Wind Turbine
Arctic
Online Access:https://digital.library.unt.edu/ark:/67531/metadc845256/
Description
Summary:Design and analysis of wind turbines are performed using aero-servo-elastic tools that account for the nonlinear coupling between aerodynamics, controls, and structural response. The NREL-developed computer-aided engineering (CAE) tool FAST also resolves the hydrodynamics of fixed-bottom structures and floating platforms for offshore wind applications. This paper outlines the implementation of a structural-dynamics module (SubDyn) for offshore wind turbines with space-frame substructures into the current FAST framework, and focuses on the initial assessment of the importance of structural nonlinearities. Nonlinear effects include: large displacements, axial shortening due to bending, cross-sectional transverse shear effects, etc.

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