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Impact on Buckled Composite Panels

Schueler, Dominik and Toso-Pentecote, Nathalie and Voggenreiter, Heinz (2013) Impact on Buckled Composite Panels. 17th International Conference on Composite Structures , 17.-21. Jun. 2013, Porto, Portugal. (Unpublished)

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Aircraft structures are vulnerable to impacting projectiles like runway debris, birds or hail. With the increased application of composite materials in aircrafts, improving the high velocity impact (HVI) response of reinforced polymers has been a topic of research for the last decades. Only a limited number of authors investigated the effect of the stress state in the target structure on the impact response and observed that preloads can significantly amplify the extent of damage. Current design practice for composite aircraft skin structures is to allow local buckling at limit load under compression. The HVI response of buckled skin plates is therefore highly relevant and studied in this paper. The methodology includes a test campaign with the DLR gas gun firing projectiles on flat buckled plates and numerical finite element simulations with the commercial code Abaqus using intra- and inter-ply damage models. Impact on buckled plates was modelled using a coupled implicit-explicit simulation procedure. From the experimental and numerical results an influence of compressive preloads and the different buckling patterns on the impact damage was observed. The numerical model was validated and shown to be able to capture the interaction between static preloads and impact loads.

Item URL in elib:https://elib.dlr.de/84633/
Document Type:Conference or Workshop Item (Speech)
Title:Impact on Buckled Composite Panels
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:June 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:High Velocity Impact, Preload, Buckling, Delamination, Implicit-Explicit Coupling
Event Title:17th International Conference on Composite Structures
Event Location:Porto, Portugal
Event Type:international Conference
Event Dates:17.-21. Jun. 2013
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: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Schüler, Dominik
Deposited On:19 Nov 2013 13:37
Last Modified:19 Nov 2013 13:37

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