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Perforation of aluminium alloy thin plates

Article dans une revue avec comité de lecture
Author
ANTOINAT, Léonard
ccKUBLER, Regis
BAROU, Jean-Luc
ccVIOT, Philippe
BARRALLIER, Laurent
211915 Mechanics surfaces and materials processing [MSMP]

URI
http://hdl.handle.net/10985/17023
DOI
10.1016/j.ijimpeng.2014.07.017
Date
2015
Journal
International Journal of Impact Engineering

Abstract

Low velocity perforation of aeronautical aluminium alloy sheets 2024 T3 is studied in this paper. After a literature review on recent experiments and models of plate's perforation, experimental results for 2 thicknesses (2 mm and 4 mm) of plates are presented. Perforation tests are performed with an instrumented drop test. The striker has a large diameter and a conical shape nose. Two models for perforation are presented and calibrated to bring a better understanding of the experiments. The first one is an analytical model based on an energetic approach. The second one is a numerical shell Finite Element FE model. A Johnson Cook phenomenological behaviour law of the plate's material is implemented in the finite element code Abaqus/Explicit. The velocity, the evolution of the impact force, the absorbed energy and the cracks' propagation are analysed.

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