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Approximate postbuckling analysis of omega-stringer-stiffened composite panels

Schilling, Jakob C. ; Mittelstedt, C. (2021):
Approximate postbuckling analysis of omega-stringer-stiffened composite panels.
In: MECHCOMP7 - 7th International Conference on Mechanics of Composites : Porto, Portugal, 1-3 September 2021 - Proceedings, p. 21,
Porto, Faculty of Engineering, University of Porto, [Conference or Workshop Item]

Abstract

A new approximate computational model for the postbuckling analysis is introduced to contribute to the preliminary design of thin-walled composite structures. The investigated structure is an omega stringer stiffened composite panel which is a type of stiffened panel used in current aircraft designs but is also relevant generally for application in aerospace structures and marine vessels. The model is derived by energy methods and aims to approximate the postbuckling behavior near the bifurcation point, i.e. with low load proportionality factors. The loadcase of uniaxial compression is considered and the quality of the new method is assessed in comparison to numerical methods. The overall aim is to reduce computational effort without unfeasible compromises in the quality of the results.

Item Type: Conference or Workshop Item
Erschienen: 2021
Creators: Schilling, Jakob C. ; Mittelstedt, C.
Title: Approximate postbuckling analysis of omega-stringer-stiffened composite panels
Language: English
Abstract:

A new approximate computational model for the postbuckling analysis is introduced to contribute to the preliminary design of thin-walled composite structures. The investigated structure is an omega stringer stiffened composite panel which is a type of stiffened panel used in current aircraft designs but is also relevant generally for application in aerospace structures and marine vessels. The model is derived by energy methods and aims to approximate the postbuckling behavior near the bifurcation point, i.e. with low load proportionality factors. The loadcase of uniaxial compression is considered and the quality of the new method is assessed in comparison to numerical methods. The overall aim is to reduce computational effort without unfeasible compromises in the quality of the results.

Title of Book: MECHCOMP7 - 7th International Conference on Mechanics of Composites : Porto, Portugal, 1-3 September 2021 - Proceedings
Place of Publication: Porto
Publisher: Faculty of Engineering, University of Porto
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Lightweight Construction and Design (KluB)
Date Deposited: 09 Sep 2021 06:48
Official URL: https://eventi.unibo.it/mechcomp7/
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