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Conception d’un essai purement inertiel pour la caractérisation du comportement dynamique de matériaux métalliques par la Méthode des Champs Virtuels

Abstract : The following work aims at designing a novel test to characterize the dynamic behaviour of metallic materials. Using the Virtual Fields Method (VFM), this test should enable the identification of elasticviscoplastic model that is valid on a wide strain and strain rate range. In order to do so, several test settings - including notably several specimen geometries - are simulated. Two criteria will govern the selection : (1) - the strain and the strain-rate range (2) - the identifiability of the parameters. Whereas the first criterion is rated with an advanced processing of the mechanical fields, the other is evaluated - based on FE simulations - reproducing the shooting procedure with a Ultra-High-Speed camera. Finally, the extraction of the material parameters demonstrates the relevance of the test setting
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https://hal-uphf.archives-ouvertes.fr/hal-03442167
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Submitted on : Tuesday, November 23, 2021 - 8:53:36 AM
Last modification on : Wednesday, November 24, 2021 - 3:48:27 AM

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  • HAL Id : hal-03442167, version 1

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Pascal Bouda, Bertrand Langrand, Delphine Notta-Cuvier, Eric Markiewicz, Fabrice Pierron. Conception d’un essai purement inertiel pour la caractérisation du comportement dynamique de matériaux métalliques par la Méthode des Champs Virtuels. 23ème Congrès Français de Mécanique, Aug 2017, Lille, France. ⟨hal-03442167⟩

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