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New Robustness-Based Design Strategy for Thin-Walled Composite Structures

da Cunha, Fabio and Wille, Tobias and Degenhardt, Richard and Sinapius, Michael and de Araujo, Francisco (2012) New Robustness-Based Design Strategy for Thin-Walled Composite Structures. AIRTEC, 06. - 08. Nov. 2012, Frankfurt, Deutschland.

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Abstract

A new robustness-based design strategy for thin-walled composite structures in post-buckling is presented, which combines load-based performance with robustness requirements evaluated from the structural energy until collapse. In order to assess the structural energy, the area under the load-shortening curve is calculated. In this context, a geometrically nonlinear finite element analysis is carried out, in which the ply properties are degraded by progressive failure. This methodology gives a new argument to shift the collapse closer to ultimate load once robustness is ensured. As originality, this work investigates the robustness of composite structures in post-buckling from the perspective of its structural energy. Moreover, robustness measures are proposed.

Item URL in elib:https://elib.dlr.de/80104/
Document Type:Conference or Workshop Item (Speech)
Title:New Robustness-Based Design Strategy for Thin-Walled Composite Structures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
da Cunha, FabioEmbraerUNSPECIFIED
Wille, TobiasUNSPECIFIEDUNSPECIFIED
Degenhardt, RichardUNSPECIFIEDUNSPECIFIED
Sinapius, MichaelUNSPECIFIEDUNSPECIFIED
de Araujo, FranciscoUniversidade Federal de Outro Preto, BrasilienUNSPECIFIED
Date:November 2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:Robustness, Post-buckling, Composite structures
Event Title:AIRTEC
Event Location:Frankfurt, Deutschland
Event Type:international Conference
Event Dates:06. - 08. Nov. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Böhringer-Thelen, Isolde
Deposited On:19 Dec 2012 12:12
Last Modified:19 Dec 2012 12:12

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