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

Pascal Bouda; Bertrand Langrand; Delphine Notta-Cuvier; Eric Markiewicz; Fabrice Pierron

doi:10.1051/epjconf/201818302032

All issues

Volume 183 (2018)

EPJ Web Conf., 183 (2018) 02032

Abstract

Open Access

Issue		EPJ Web Conf. Volume 183, 2018 DYMAT 2018 - 12^th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading


Article Number		02032
Number of page(s)		4
Section		Experimental Techniques
DOI		https://doi.org/10.1051/epjconf/201818302032
Published online		07 September 2018

EPJ Web of Conferences 183, 02032 (2018)
https://doi.org/10.1051/epjconf/201818302032

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

Pascal Bouda¹^,2^*, Bertrand Langrand¹, Delphine Notta-Cuvier², Eric Markiewicz² and Fabrice Pierron³

¹ French Aerospace Research Center (ONERA), Dept. Materials and Structures, Lille - France
² University of Valenciennes, LAMIH UMR CNRS 8201, Valenciennes - France
³ University of Southampton, Faculty of Engineering and the Environment, Southampton - UK

^* e-mail: pascal.bouda@onera.fr

Published online: 7 September 2018

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.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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