Bramsiepe, Kjell and Gröhlich, Martin and Dähne, Sascha and Hahn, Daniel (2022) Structural Concepts for Passive Load Alleviation. In: AIAA SciTech 2022 Forum. AIAA SCITECH 2022 Forum, 3.-7. Jan. 2022, San Diego, CA & Virtual. doi: 10.2514/6.2022-0687. ISBN 978-162410631-6.
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Abstract
Background: Nonlinear elastic concepts like degressive springs or shape memory alloys show up a wide range usage. Linear relations are then customizable for such stiffness technologies. Objective: The aim of the structural research units is to transfer this effect of stiffnesses nonlinearities into the field of aeronautical engineering. Method: For that purpose, a structural full finite element model is set up as a reference model for all concepts. To investigate several stiffness technologies, a nonlinear elastic beam method is developed. A technology for nonlinear elastic wing structures with buckling skin panels is presented. In addition, a nonlinear bending-torsion coupling is introduced by a buckling wing segment. Viscoelastic materials are applied to the structure by a constraint layer damping attachment. Results: The presented structural concepts have a potential to alleviate the loads of maneuver and gust encounters. Constraint layer damping can be used to limit the amplitude of a chosen eigenmode.
Item URL in elib: | https://elib.dlr.de/148310/ | ||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||
Title: | Structural Concepts for Passive Load Alleviation | ||||||||||||||||||||
Authors: |
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Date: | January 2022 | ||||||||||||||||||||
Journal or Publication Title: | AIAA SciTech 2022 Forum | ||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||
DOI: | 10.2514/6.2022-0687 | ||||||||||||||||||||
ISBN: | 978-162410631-6 | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | passive load alleviation, structural concepts, nonlinear elastic, viscoelastic design | ||||||||||||||||||||
Event Title: | AIAA SCITECH 2022 Forum | ||||||||||||||||||||
Event Location: | San Diego, CA & Virtual | ||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||
Event Dates: | 3.-7. Jan. 2022 | ||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
HGF - Program: | Aeronautics | ||||||||||||||||||||
HGF - Program Themes: | Efficient Vehicle | ||||||||||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||||||||||
DLR - Program: | L EV - Efficient Vehicle | ||||||||||||||||||||
DLR - Research theme (Project): | L - Aircraft Technologies and Integration | ||||||||||||||||||||
Location: | Göttingen | ||||||||||||||||||||
Institutes and Institutions: | Institute of Aeroelasticity > Loads Analysis and Aeroelastic Design Institute of Aeroelasticity > Structural Dynamics and System Identification Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures | ||||||||||||||||||||
Deposited By: | Bramsiepe, Kjell | ||||||||||||||||||||
Deposited On: | 14 Jan 2022 12:17 | ||||||||||||||||||||
Last Modified: | 10 Aug 2023 07:36 |
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