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Optimization of an image-based impact test for the characterization of viscoplasticity

Abstract : The present work aims at identifying Johnson-Cook viscoplastic model parameters over a plastic wide strain and strain-rate range (up to 0.1 and 1000 s-1 respectively), using the Dynamic Virtual Fields Method. To define the experimental setup, a design process has been set. It relies on the numerical optimization of the setup specimen shape, the impact conditions and the measurement resolution (spatial and temporal resolution for field measurements), etc. with respects to user-defined criteria. Finally, the selected configuration has to ensure an accurate and robust identification.
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https://hal-uphf.archives-ouvertes.fr/hal-03436266
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Submitted on : Friday, November 19, 2021 - 11:32:45 AM
Last modification on : Saturday, November 20, 2021 - 3:49:02 AM

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  • HAL Id : hal-03436266, version 1

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Pascal Bouda, Delphine Notta-Cuvier, Bertrand Langrand, Eric Markiewicz, Fabrice Pierron. Optimization of an image-based impact test for the characterization of viscoplasticity. 2nd International Conference on Impact Loading of Structures and Materials (ICILSM), May 2018, Xi'an, China. ⟨hal-03436266⟩

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