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Experiments and numerical simulations on thin metallic plates subjected to an explosion

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2001
auteur(s) Woznica Krzysztof; Pennetier Olivier; Renard Jérôme
journal Journal of Engineering Materials and Technology
volume (numéro) 123 (2)
  
pages 203 – 209
résumé Submitted to a sudden and a transient loading, a metallic structure quickly evolves toward viscoplastic behavior, including high strain rates. After generalities about the specific loading and the description of the experimental setup, a numerical simulation based on the F.E.M. using an explicit scheme is presented. Three different constitutive laws are discussed: the Perzyna, the Bodner-Partom, and that of Chaboche. The identification of constitutive parameters is made using unidirectional tests on the studied material (aluminum alloy 5754). A comparison between numerical simulations and experiments shows that the method is relevant
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