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Aeroelastic Load Selection based on Elements Indices

Bramsiepe, Kjell and Herberhold, Moritz and Voß, Arne (2021) Aeroelastic Load Selection based on Elements Indices. DLRK 2021 - Deutscher Luft- und Raumfahrtkongress, 31 Aug - 02 Sep 2021, Bremen, Germany and Virtual. doi: 10.25967/550237.

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Official URL: https://publikationen.dglr.de/?tx_dglrpublications_pi1[document_id]=550237


Background: For the preliminary aircraft design, the loads of a configuration have to be analyzed for several load cases and the structure is optimized for minimum weight. The load selection between the load analysis and the structural optimization determines the calculation time. The less critical load cases are identified, the faster is the optimization. Objective: Thus, a new method is tested at a conventional tail-aft configuration in order to investigate the reduction of critical load cases towards the final result and the computational effort. Method: The new method based on finite elements calculates the failure indices for each element for each load case. The highest failure index of an element identifies the critical load case. Simulation Model: To analyze the new method on a conventional tail-aft aircraft, the XRF1-DLR-C is utilized. It is a full composite FE-model which was developed from the data set of the XRF1 of Airbus. Results: The identified load cases and the calculation time are reduced while the results change only marginally.

Item URL in elib:https://elib.dlr.de/144540/
Document Type:Conference or Workshop Item (Speech)
Title:Aeroelastic Load Selection based on Elements Indices
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Bramsiepe, KjellUNSPECIFIEDhttps://orcid.org/0000-0003-3351-8036
Voß, ArneUNSPECIFIEDhttps://orcid.org/0000-0003-2266-7853
Date:1 September 2021
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Load Selection, Cutting Loads Method, XRF1-DLR-C
Event Title:DLRK 2021 - Deutscher Luft- und Raumfahrtkongress
Event Location:Bremen, Germany and Virtual
Event Type:national Conference
Event Dates:31 Aug - 02 Sep 2021
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
Deposited By: Bramsiepe, Kjell
Deposited On:15 Oct 2021 10:53
Last Modified:23 Nov 2021 16:16

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