Bramsiepe, Kjell and Gröhlich, Martin and Dähne, Sascha and Hahn, Daniel (2022) Structural Concepts for Passive Load Alleviation. AIAA SCITECH 2022 Forum, 3.-7. Jan. 2022, San Diego, CA & Virtual. doi: 10.2514/6.2022-0687.
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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 | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | No | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | No | |||||||||||||||
In ISI Web of Science: | No | |||||||||||||||
DOI: | 10.2514/6.2022-0687 | |||||||||||||||
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: | 14 Jan 2022 12:17 |
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