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Approximate computational model for the local postbuckling of omega‐stringer‐stiffened composite panels

Schilling, Jakob C. ; Mittelstedt, Christian (2023)
Approximate computational model for the local postbuckling of omega‐stringer‐stiffened composite panels.
In: PAMM - Proceedings in Applied Mathematics & Mechanics, 2023, 22 (1)
doi: 10.26083/tuprints-00023730
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Approximate computational model for the local postbuckling of omega‐stringer‐stiffened composite panels
Language: English
Date: 24 November 2023
Place of Publication: Darmstadt
Year of primary publication: 2023
Place of primary publication: Weinheim
Publisher: Wiley-VCH
Journal or Publication Title: PAMM - Proceedings in Applied Mathematics & Mechanics
Volume of the journal: 22
Issue Number: 1
Collation: 6 Seiten
DOI: 10.26083/tuprints-00023730
Corresponding Links:
Origin: Secondary publication DeepGreen

Typical thin‐walled structures are found in applications like aircraft, spacecraft and marine vessels. For this type of structure, stability behaviour is crucial. The better this behaviour is understood, the better the full lightweight potential can be exploited. For composite structures especially, new fast analysis tools for preliminary design are required to address this issue. Therefore, the local postbuckling of omega‐stringer‐stiffened composite panels is the subject of a new computational model. The analysis method is computationally highly efficient because it is based on a closed‐form analytical approach. The explicit solution is derived based on the principle of the minimum of the total elastic potential. Furthermore, the solution assumes that the initial eigenform does not substantially change in the early postbuckling regime. In this way, the plates of the skin and stringer can be included explicitly in the analysis. Compared to finite element analysis and a closed‐form computational model found in the literature, the new analysis tool is assessed. The results indicate excellent agreement for panels, where the bay plate is the most critical element of the panel. The new computational model promises to be a highly efficient tool in the preliminary design framework.

Identification Number: e202200152
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-237305
Additional Information:

This article also appears in: 92nd Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM)

Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering > Institute for Lightweight Construction and Design-KluB (2023 renamed in Leichtbau und Strukturmechanik (LSM))
Date Deposited: 24 Nov 2023 14:01
Last Modified: 28 Nov 2023 11:38
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23730
PPN: 513489029
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