https://doi.org/10.1051/epjconf/201818302032
Image-based high strain-rate testing for the characterization of viscoplasticity
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
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.
© The Authors, published by EDP Sciences, 2018
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.
