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Testing and simulation of impact damaged stiffened CFRP-panels

Wolff, Caroline and Wilckens, Dirk (2015) Testing and simulation of impact damaged stiffened CFRP-panels. 3rd Int. Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures, 25.03.2015-27.03.2015, Braunschweig.

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In the present contribution, the residual strength behaviour of stiffened CFRP shells under axial compression loading is discussed. In this context, two stiffened CFRP panels are pre-damaged by impact and tested under axial compression until collapse. The panels without damage were tested before in order to obtain a reference result. Two different impact scenarios are investigated on a T- and a J-stringer stiffened panel, respectively. The damaged area is assessed by ultra-sonic (US) inspection. Load shortening data, strains as well as full field displacements are recorded during the test. Additionally to the experiments, the structural behaviour is simulated for the undamaged and damaged structures using the commercial FE-code Abaqus. The US inspection results of the impacted areas are transferred into the FE-models, and the stiffness and strength of affected elements are degraded accordingly. The numerical results are compared to the experimental findings. Through this approach, the influence of both impact scenarios on the structural behaviour of stiffened CFRP shells is assessed by test and simulation.

Item URL in elib:https://elib.dlr.de/99009/
Document Type:Conference or Workshop Item (Speech, Poster)
Title:Testing and simulation of impact damaged stiffened CFRP-panels
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:March 2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:stiffened panel, buckling, postbuckling, impact, residual strength, NDI-FEM-transfer, test and simulation
Event Title:3rd Int. Conference on Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures
Event Location:Braunschweig
Event Type:international Conference
Event Dates:25.03.2015-27.03.2015
Organizer:DLR-Institut für Faserverbundleichtbau und Adaptronik
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)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Wolff, Caroline
Deposited On:14 Dec 2015 07:58
Last Modified:14 Dec 2015 07:58

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