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Loi de comportement en plasticité cristalline pour acier àbasse température
Ghiath Monnet, Ludovic Vincent
Journal:

Mechanics & Industry / Volume 12 / Issue 3 / 2011

Published online by Cambridge University Press:

20 July 2011, pp. 193-198

Print publication:

2011
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Dans le cadre de la prévision par une approche multiéchelles de l’évolution de la courbede transition ductile/fragile des aciers de cuves des centrales nucléaires en fonction del’irradiation, on commence par tenter de reproduire le comportement mécanique à bassetempérature de ces matériaux à l’échelle de l’agrégat. Partant d’une analyse des résultatsnumériques obtenus par dynamique des dislocations discrètes dans ce régime de température,une nouvelle loi de comportement en plasticité cristalline est donc proposée avec unminimum de paramètres ajustables sur résultats macroscopiques.