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Progressive failure analysis using global-local coupling including intralaminar failure and debonding

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journal contribution
posted on 2024-06-19, 08:57 authored by Margarita Akterskaia, Eelco Jansen, Stephen R. Hallett, Paul WeaverPaul Weaver, Raimund Rolfes

Composite laminate stiffened panels are often used in aircraft fuselage design because of their favorable properties. To assess the failure load of these thin-walled structures and to exploit their reserves, a reliable simulation capability for their postbuckling behavior is often necessary. To perform a realistic failure analysis and to accurately detect final collapse, material degradation should be considered. Global-local approaches are computationally efficient techniques to perform a progressive failure analysis and to examine localized damaged areas in detail. In this paper, a two-way coupling global-local approach is presented, including a combination of different damage modes, such as matrix cracking, fiber damage, and skin-stringer debonding. An accurate exchange of information concerning the damage state between global and refined local models is performed. From the global to the local model, the displacements are transkrred through a submodeling procedure. Afterward, the degraded material properties obtained from the local model analysis are returned to the global model with a special mapping technique that accounts for the different mesh sizes at the two levels. The two-way coupling procedure is applied to the progressive failure analysis of a one-stringer composite panel loaded in compression. Finally, the numerical results of the procedure arc compared with experimental results.

Funding

FULLY INTEGRATED ANALYSIS, DESIGN, MANUFACTURING AND HEALTH-MONITORING OF COMPOSITE STRUCTURES

European Commission

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History

Publication

AIAA Journal 2019, 57, (7), pp. 3078-3089

Publisher

ARC Aerospace Research Central

Other Funding information

The research leading to these results has received funding from European Union’s Horizon 2020 research and innovation program (FULLCOMP/2015-2019) under Marie Sklodowska-Curie actions grant agreement number 642121. The provided financial support is gratefully acknowledged by the authors. Paul M. Weaver would like to thank Science Foundation Ireland for funding VARICOMP under its Research Professor scheme

Rights

This is the author accepted manuscript (AAM). The final published version (version of record) is available online via AIAA at https://arc.aiaa.org/doi/10.2514/1.J057677 . Please refer to any applicable terms of use of the publishe

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