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Stiffness degradation of composite skin fields due to strength and buckling onset

Führer, Tanja (2017) Stiffness degradation of composite skin fields due to strength and buckling onset. Thin-Walled Structures (119), pp. 522-530. Elsevier. ISSN 0263-8231.

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Suitable and fast calculation methods with sufficient accuracy are required to optimise large composite structures. The present paper introduces a progressive stiffness degradation analysis (PSDA), which computes skin buckling onset and strength failure initiation of skin fields separated by stiffeners, as well as the subsequent damage propagation using closed form solutions. This constitutes a simplified, but much faster approach compared to state of the art progressive failure analyses, which incorporate finite element simulations. Therefore, the computational effort can be reduced. This paper illustrates the process of the PSDA and then verifies this simplified approach by means of one example.

Item URL in elib:https://elib.dlr.de/116694/
Document Type:Article
Title:Stiffness degradation of composite skin fields due to strength and buckling onset
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Führer, Tanjatanja.fuehrer (at) dlr.deUNSPECIFIED
Date:October 2017
Journal or Publication Title:Thin-Walled Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 522-530
Series Name:Elsevier
Keywords:Composite structures, Failure criteria, Optimisation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old), L - Simulation and Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Führer, Tanja
Deposited On:11 Dec 2017 09:16
Last Modified:06 Sep 2019 15:20

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