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On polymorphic uncertainty modeling in shell buckling

Fina, Marc ORCID iD icon 1; Wagner, Werner 1; Graf, Wolfgang
1 Institut für Baustatik (IBS), Karlsruher Institut für Technologie (KIT)

Abstract:

Buckling is typically the governing failure mode of thin-walled shells. In particular, geometric and material imperfections have a major influence on the buckling behavior. Small variations of imperfections have large effects on the load-bearing behavior. However, the design of shells is still characterized by a deterministic way of thinking, in which uncertainties have not yet been sufficiently considered. Even in probabilistic approaches, false assumptions are often generated due to the small amount of experimental data. The focus of this paper is an appropriate uncertainty quantification based on the available data. Therefore, the concept of polymorphic uncertainty modeling is presented on axially loaded shells with different types of imperfections. Finally, an idea for a novel design concept for shells based on a fuzzy-valued safety level is introduced. The paper is intended to initiate a rethinking of the methodology for the numerical design of shells with an appropriate uncertainty quantification.


Verlagsausgabe §
DOI: 10.5445/IR/1000160026
Veröffentlicht am 04.07.2023
Originalveröffentlichung
DOI: 10.1111/mice.13054
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Baustatik (IBS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1093-9687, 0885-9507, 1467-8667, 2162-6316
KITopen-ID: 1000160026
Erschienen in Computer-Aided Civil and Infrastructure Engineering
Verlag John Wiley and Sons
Band 38
Heft 18
Seiten 2632-2647
Vorab online veröffentlicht am 09.06.2023
Nachgewiesen in Scopus
Web of Science
Dimensions
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