Prediction of strain localization using a micromechanics-based damage model: impact of damage and hardening parameters on formability
Communication avec acte
Date
2016Abstract
In this work, ductility limits of metallic materials, associated with the occurrence of strain localization, are predicted using the GTN damage model coupled with bifurcation theory. The resulting approach is implemented into the finite element code ABAQUS within the framework of large plastic strains and a fully three-dimensional formulation. A parametric study with respect to damage and hardening parameters is conducted in order to identify the most influential material parameters on strain localization. The analysis shows that the damage parameters have a significant impact on the predicted ductility limits, while the effect of hardening parameters on strain localization depends on the choice of void nucleation mechanism.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureBOUKTIR, Yasser; CHALAL, Hocine; HADDAD, Moussa; ABED-MERAIM, Farid (Elsevier, 2016)The ductility limits of an St14 steel are investigated using an elastic‒plastic‒damage model and bifurcation theory. An associative J2-flow theory of plasticity is coupled with damage within the framework of continuum ...
-
Communication avec acteCHALAL, Hocine; SALAHOUELHADJ, Abdellah; ABED-MERAIM, Farid (Wiley, 2012)In this paper, the performance of the solid-shell finite element SHB8PS is assessed in the context of sheet metal forming simulation using anisotropic elastic-plastic behavior models. This finite element technology has ...
-
Quadratic solid‒shell elements for nonlinear structural analysis and sheet metal forming simulation Article dans une revue avec comité de lectureWANG, Peng; CHALAL, Hocine; ABED-MERAIM, Farid (Springer Verlag, 2017)In this paper, two quadratic solid‒shell (SHB) elements are proposed for the three-dimensional modeling of thin structures. These consist of a twenty-node hexahedral solid‒shell element, denoted SHB20, and its fifteen-node ...
-
Article dans une revue avec comité de lectureWANG, Peng; CHALAL, Hocine; ABED-MERAIM, Farid (Univerza v Ljubljani Fakulteta za strojništvo, 2017)A family of prismatic and hexahedral solid–shell (SHB) elements, with their linear and quadratic versions, is proposed in this work to model thin structures. The formulation of these SHB elements is extended to explicit ...
-
Article dans une revue avec comité de lectureCHALAL, Hocine; ABED-MERAIM, Farid (MDPI, 2018)In the current contribution, prismatic and hexahedral quadratic solid–shell (SHB) finite elements are proposed for the geometrically nonlinear analysis of thin structures made of functionally graded material (FGM). The ...