Image-based high strain-rate testing for the characterization of viscoplasticity

Bouda, Pascal, Langrand, Bertrand, Notta-Cuvier, Delphine, Markiewicz, Eric and Pierron, Fabrice (2018) Image-based high strain-rate testing for the characterization of viscoplasticity. In DYMAT 2018 - 12th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading. vol. 183, EDP Sciences.. (doi:10.1051/epjconf/201818302032).

Record type: Conference or Workshop Item (Paper)

Abstract

The present work aims at identifying an elastic-viscoplastic material behaviour over a wide strain and strain-rate range (up to 0.1 and 1000 s^-1 respectively), using the so-called Virtual Fields Method. To define the experimental campaign, a design process has been set. This relies on the numerical optimization of the setup-notably the specimen shape? with respects to user-defined criteria. Finally, the selected configuration ensures an accurate and robust identification of material parameters.

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e-pub ahead of print date: 7 September 2018

Published date: 7 September 2018

Venue - Dates: 12th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading, DYMAT 2018, , Arcachon, France, 2018-09-09 - 2018-09-14