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Aeroelastic method to investigate nonlinear elastic wing structures

Bramsiepe, Kjell and Klimmek, Thomas and Krüger, Wolf R. and Tichy, Lorenz (2022) Aeroelastic method to investigate nonlinear elastic wing structures. CEAS Aeronautical Journal. Springer. doi: 10.1007/s13272-022-00596-0. ISSN 1869-5590.

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Official URL: https://link.springer.com/article/10.1007/s13272-022-00596-0


Stiffness directions of wing structures are already part of the optimisation in aircraft design. Aircraft like the A350 XWB and the Boeing 787 mainly consist of such composite material, whose stiffness directions can be optimised. To proceed with this stiffness optimisation, the aim of this work is to modify and optimise also the linear stress-strain relation. On that account, the Hooke's law is exchanged by a multi-linear formulation to analyse any nonlinear elastic structural technology on wing structures. The wing structures, which are used to investigate the nonlinear behaviour, are deduced from a mid-range and a long-range aircraft configuration. These wings are analysed with an extended beam method and coupled with a VLM solution to calculate the aeroelastical loading. The proposed beam method is capable of analysing any multi-linear wing structure technology. A degressive structural behaviour shows up a good potential to reduce the bending moment which is one of the main drivers of the structural weight.

Item URL in elib:https://elib.dlr.de/188040/
Document Type:Article
Title:Aeroelastic method to investigate nonlinear elastic wing structures
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Bramsiepe, KjellUNSPECIFIEDhttps://orcid.org/0000-0003-3351-8036UNSPECIFIED
Krüger, Wolf R.UNSPECIFIEDhttps://orcid.org/0000-0002-7949-1169UNSPECIFIED
Tichy, LorenzUNSPECIFIEDhttps://orcid.org/0000-0001-9092-5864UNSPECIFIED
Date:29 August 2022
Journal or Publication Title:CEAS Aeronautical Journal
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:nonlinear elasticity, hyperelasticity, multi-linear elasticity, passive load alleviation, aeroelastic tailoring
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - Structural Materials and Design
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design
Institute of Aeroelasticity > Administration AE
Deposited By: Bramsiepe, Kjell
Deposited On:30 Aug 2022 08:47
Last Modified:28 Jun 2023 13:06

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