MATEC Web Conf.
Volume 80, 2016NUMIFORM 2016: The 12th International Conference on Numerical Methods in Industrial Forming Processes
|Number of page(s)||7|
|Section||MS1: Generalized continua and nonlocal formulations|
|Published online||24 October 2016|
Application of a second-gradient model of ductile fracture on a Dissimilar Metal Weld
ENSTA, 828 boulevard des Maréchaux, 91762 Palaiseau Cedex, France
2 ESI France, Le Recamier, 70 rue Robert, 69458 Lyon Cedex 06, France
3 Université de Lyon, ENISE, LTDS, UMR 5513 CNRS, 58, rue Jean Parot, 42023 Saint-Etienne Cedex 2, France
4 ∂’Alembert, boîte 162, 4 place Jussieu, 75252 Paris Cedex 05, France
5 AREVA NP, Tour Areva, 1 place Jean Millier, 92400 Courbevoie, France
a Corresponding author: firstname.lastname@example.org
A “micromorphic”, second-gradient model applicable to ductile porous materials has been proposed, as an improvement from the fundamental work of Gurson that take into account the physical mechanisms responsible for ductile damage. The model has been applied to the study of fracture of the decarburized layer of a Dissimilar Metal Weld. The model successfully reproduces the crack path experimentally observed in a notched tensile sample extracted from this weld, different from the one predicted by the first gradient model.
© The Authors, published by EDP Sciences, 2016
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