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Simplified modelling of stiffened panels for simultaneous static and dynamic optimization

Weiß, Lennart and Köke, Hardy and Hühne, Christian (2013) Simplified modelling of stiffened panels for simultaneous static and dynamic optimization. In: Research and Applications in Structural Engineering, Mechanics and Computation - Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013. CRC Press. 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013, 2.-4. September 2013, Cape Town, South Africa. ISBN 978-113800061-2

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Abstract

In this paper a novel simplified structural modelling approach for stiffened panels is presented. It specifically addresses structural response of aircraft fuselage components made from carbon fibre reinforced plastics (CFRP). The proposed method considers structural modelling requirements necessary for structural optimisation with respect to system response under simultaneous static and dynamic loads. The standard explicit finite element (FE) solver LS-Dyna is utilised, providing the framework to regard statics and dynamics as well as non-linearities by material, large deformation and contact. The simplified model is fundamentally composed of shell, beam, and discrete elements. Simulating the structural collapse behaviour of thin-walled CFRP sections under bending load the detailed model provides input parameters for the discrete elements. Furthermore, skinframe- interaction attributes immanent to the present fuselage configuration are reviewed and considered by idealised deformation characteristics. Finally, the present approach is verified through analyses of the detailed model. The results illustrate the benefits of model simplification. Replacing detailed shell model features by beam and non-linear spring elements significantly reduces computational effort. At the same time the accuracy deduction is acceptable considering topological optimisation requirements.

Item URL in elib:https://elib.dlr.de/95006/
Document Type:Conference or Workshop Item (Speech)
Title:Simplified modelling of stiffened panels for simultaneous static and dynamic optimization
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Weiß, LennartInstitut für Faserverbundleichtbau und AdaptronikUNSPECIFIED
Köke, HardyInstitut für Faserverbundleichtbau und AdaptronikUNSPECIFIED
Hühne, ChristianInstitut für Faserverbundleichtbau und AdaptronikUNSPECIFIED
Date:September 2013
Journal or Publication Title:Research and Applications in Structural Engineering, Mechanics and Computation - Proceedings of the 5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmail
Zingoni, AlphoseDepartment of Civil Engineering, University of Capetown, Cape Town, South Africa
Publisher:CRC Press
ISBN:978-113800061-2
Status:Published
Keywords:Simplified Structural Modelling, Composites, Simultaneous Static and Dynamic Optimisation
Event Title:5th International Conference on Structural Engineering, Mechanics and Computation, SEMC 2013
Event Location:Cape Town, South Africa
Event Type:international Conference
Event Dates:2.-4. September 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Weiß, Lennart
Deposited On:20 Jul 2015 12:45
Last Modified:23 May 2016 22:54

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