Eric Ragneau
European University of Brittany
55 Papers
288 Citations
Eric Ragneau is an academic researcher from European University of Brittany. The author has contributed to research in topics: Formability & Finite element method. The author has an hindex of 16, co-authored 55 publications. Previous affiliations of Eric Ragneau include Intelligence and National Security Alliance & Institut national des sciences appliquées de Rennes.
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Papers
Development of an in-plane biaxial test for forming limit curve (FLC) characterization of metallic sheets
TL;DR: In this article, a servo-hydraulic testing machine with four independent dynamic actuators is proposed for the characterization of sheet metal forming, and a rigorous procedure for the detection of numerical and experimental forming strains is also presented.
Theoretical and numerical study of strain rate influence on AA5083 formability
TL;DR: In this article, two different approaches are introduced to construct FLDs (forming limit diagrams) of an aluminum alloy sheet and evaluate the effect of the rate sensitivity index on its formability.
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Cruciform shape benefits for experimental and numerical evaluation of sheet metal formability
TL;DR: In this article, the authors present an original technique based on the use of a cruciform shape for experimental characterization and numerical prediction of forming limit curves, which can be used to evaluate material forming abilities.
70
Identification of sheet metal hardening for large strains with an in-plane biaxial tensile test and a dedicated cross specimen
TL;DR: In this article, an in-plane biaxial tensile test of a cruciform specimen is performed to identify the hardening behavior of metallic sheets under large strains, by considering different yield criteria, the associated hardening laws are identified thanks to an inverse procedure based on a Finite Element (FE) modelling.
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Temperature and strain rate influence on AA5086 Forming Limit Curves: Experimental results and discussion on the validity of the M-K model
TL;DR: In this article, a modified Ludwick hardening law with temperature and strain rate functions is proposed to describe the thermo-elasto-viscoplastic behavior of the material.
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