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Buckling of simply-supported rectangular Double-Double laminates

Kappel, Erik (2023) Buckling of simply-supported rectangular Double-Double laminates. Composites Part C: Open Access. Elsevier. doi: 10.1016/j.jcomc.2023.100364. ISSN 2666-6820.

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The family of Double-Double (DD) laminates is in focus of the present study. Well established buckling-cases for rectangular plates are examined in this article from a DD perspective. It is shown that the DD conventions allow for beneficial reformulation of the available equations, which leads to drastic simplification. It is demonstrated that the lightest DD laminate can directly be determined for a specified buckling load. Permutation discussions and the corresponding evaluation of thousands of discrete solutions, known for conventional laminates, become obsolete. The developed DD-buckling equations are further examined from an invariant-based perspective using IQ=Q11+Q22+Q66+Q12 which reveals the important role of the (IQ)^(-1/3) term for minimum-laminate-thickness calculations.

Item URL in elib:https://elib.dlr.de/196387/
Document Type:Article
Title:Buckling of simply-supported rectangular Double-Double laminates
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Kappel, ErikUNSPECIFIEDhttps://orcid.org/0000-0002-8760-8451UNSPECIFIED
Date:29 May 2023
Journal or Publication Title:Composites Part C: Open Access
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Keywords:Composite design, Double–Double, Buckling, Optimization,
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: Braunschweig
Institutes and Institutions:Institut für Systemleichtbau > Composite Design
Deposited By: Kappel, Dr.-Ing. Erik
Deposited On:14 Aug 2023 12:42
Last Modified:14 Aug 2023 12:42

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