Micromechanical modeling of the ratcheting behavior of 304 stainless steel

I. Ben Naceur 1 Kacem Sai 1 T. Hassan Georges Cailletaud 2
1 Unité de Génie de Production Mécanique et Matériaux - UGPM2 (Sfax, Tunisia)
2 MAT - Centre des Matériaux
Abstract : Numerical simulations of 304 austenitic stainless steel (SS304) cyclic and ratcheting responses are performed using polycrystalline plasticity models. On the basis of the polycrystalline model of Cailletaud and Pilvin (1994, “Utilisation de modèles polycristallins pour le calcul par éléments finis,” Rev. Eur. Élém. Finis, 3, pp. 515–541), a modification of the β rule that operates the transition between the macroscopic level and the grain level is proposed. The improvement of the transition rule is obtained by introducing a “memory variable” at the grain level, so that a better description of the local stress–strain behavior is provided. This new feature is calibrated by means of previous simulations using finite element (FE) aggregate models. The results of the updated polycrystalline plasticity model are in good agreement with the macroscopic responses.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01295547
Contributeur : Bibliothèque Umr7633 <>
Soumis le : jeudi 31 mars 2016 - 11:41:34
Dernière modification le : lundi 12 novembre 2018 - 11:04:06

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I. Ben Naceur, Kacem Sai, T. Hassan, Georges Cailletaud. Micromechanical modeling of the ratcheting behavior of 304 stainless steel. Journal of Engineering Materials and Technology, American Society of Mechanical Engineers, 2016, 138 (2), 021005, 8 p. ⟨10.1115/1.4032154⟩. ⟨hal-01295547⟩

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