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Comparison of different cross-sectional approaches for the structural design and optimization of composite wind turbine blades based on beam models

Werthen, Edgar and Hardt, Daniel and Balzani, Claudio and Hühne, Christian (2023) Comparison of different cross-sectional approaches for the structural design and optimization of composite wind turbine blades based on beam models. Wind Energy Science. Copernicus Publications. doi: 10.5194/wes-2023-147. ISSN 2366-7443. (Submitted)

Full text not available from this repository.

Official URL: https://wes.copernicus.org/preprints/wes-2023-147/

Abstract

During the preliminary multidisciplinary design phase of wind turbine blades the evaluation of many design candidates plays an important role. Computationally efficient methods for the structural analysis are needed to cover the required effects, e.g., correct prediction of stiffness matrix entries including the (bend-twist) coupling terms. The present paper provides an extended overview of available approaches and shows their ability to fulfill the requirements for the composite design of rotor blades. Three cross-sectional theories are selected and implemented to compare the cross-sectional coupling stiffness terms and the stress distribution based on different multi-cell test cross-sections. The cross-sectional results are compared with the 2D finite element code BECAS and discussed in the context of accuracy and computational efficiency. The most promising approach achieved a better resolution of the stress distribution compared to BECAS and an order of a magnitude less computation time when the same discretization is used. The deviations of the stress distributions are below 10 percent for the most test cases. The results can serve as a basis for the beam-based design of wind turbine rotor blades.

Item URL in elib:https://elib.dlr.de/200196/
Document Type:Article
Additional Information:We would like to acknowledge the funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany´s Collaborative Research Center – CRC 1463/1 - Integrated design and operation methodology for offshore megastructures – Project-ID 434502799
Title:Comparison of different cross-sectional approaches for the structural design and optimization of composite wind turbine blades based on beam models
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Werthen, EdgarUNSPECIFIEDhttps://orcid.org/0000-0003-3958-4552UNSPECIFIED
Hardt, DanielUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Balzani, ClaudioLeibnitz Universität Hannoverhttps://orcid.org/0000-0003-3432-3476UNSPECIFIED
Hühne, ChristianUNSPECIFIEDhttps://orcid.org/0000-0002-2218-1223UNSPECIFIED
Date:26 October 2023
Journal or Publication Title:Wind Energy Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.5194/wes-2023-147
Publisher:Copernicus Publications
ISSN:2366-7443
Status:Submitted
Keywords:Composite beams Analytical cross section approach Thin-walled structures Structural stiffness coupling Aeroelastic tailoring Structural optimisation
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:Photovoltaics and Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy, L - Structural Materials and Design
Location: Braunschweig
Institutes and Institutions:Institut für Systemleichtbau > Composite Design
Deposited By: Werthen, Edgar
Deposited On:06 Dec 2023 06:44
Last Modified:29 Jan 2024 12:56

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