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

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...

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Bibliographic Details
Published inEPJ Web of Conferences Vol. 183; p. 2032
Main Authors Bouda, Pascal, Langrand, Bertrand, Notta-Cuvier, Delphine, Markiewicz, Eric, Pierron, Fabrice
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2018
Subjects
Optimization
Parameter identification
Parameter robustness
Robustness (mathematics)
Strain rate
Viscoplasticity
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Summary: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.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201818302032