Modeling of the induced plastic anisotropy fully coupled with ductile damage under finite strains

2017 ◽  
Vol 108 ◽  
pp. 49-62 ◽  
Author(s):  
H. Badreddine ◽  
Z.M. Yue ◽  
K. Saanouni
Keyword(s):  
Plastic Anisotropy ◽  
Finite Strains ◽  
Ductile Damage ◽  
Fully Coupled

scholarly journals An advanced elastoplastic framework accounting for induced plastic anisotropy fully coupled with ductile damage

2021 ◽  
pp. 106620
Author(s):  
J. Paux ◽  
M. Ben Bettaieb ◽  
H. Badreddine ◽  
F. Abed-Meraim ◽  
C. Labergere ◽  
...  
Keyword(s):  
Plastic Anisotropy ◽  
Ductile Damage ◽  
Fully Coupled

On the full coupling of plastic anisotropy and anisotropic ductile damage under finite strains

2016 ◽  
Vol 26 (7) ◽  
pp. 1080-1123 ◽  
Author(s):  
Houssem Badreddine ◽  
Khemais Saanouni
Keyword(s):  
Constitutive Equations ◽  
Plastic Anisotropy ◽  
Complex Loading ◽  
Finite Strains ◽  
Ductile Damage ◽  
Rotating Frame ◽  
Proportional Loading ◽  
Strongly Coupled ◽  
Loading Paths ◽  
Model Response

In this work, thermodynamically consistent, non-associative and fully anisotropic elastoplastic constitutive equations strongly coupled with ductile anisotropic damage developed in previous work are used to study the responses of the proposed model under various simple and complex loading paths. First, the complete set of the fully coupled non-associative constitutive equations based on the rotated frame formulation (RFF) for finite strains is summarized and shortly discussed. Then, the effect of the rotating frame in the model response is analyzed on the light of typical loading paths. The influence of the induced plastic anisotropies on the evolution of the anisotropic ductile damage is investigated. Finally, the responses of the model for non-proportional loading paths are studied, compared and discussed with respect to the initial and induced anisotropies of the plastic flow and the ductile damage evolution as well as with respect to the rotating frame choice.

Numerical simulation of easy opening lids for food cans using fully coupled advanced constitutives equations with ductile damage

2008 ◽  
Vol 1 (S1) ◽  
pp. 149-152
Author(s):  
C. Labergere ◽  
C. Dubois ◽  
K. Saanouni ◽  
O. Beigneux ◽  
J. J. Li
Keyword(s):  
Numerical Simulation ◽  
Ductile Damage ◽  
Fully Coupled

Enhanced CDM model accounting of stress triaxiality and Lode angle for ductile damage prediction in metal forming

2020 ◽  
pp. 105678952095804
Author(s):  
Kai Zhang ◽  
Houssem Badreddine ◽  
Naila Hfaiedh ◽  
Khemais Saanouni ◽  
Jianlin Liu
Keyword(s):  
Constitutive Equations ◽  
Damage Model ◽  
Stress Triaxiality ◽  
Ductile Damage ◽  
Irreversible Processes ◽  
State Variables ◽  
Damage Prediction ◽  
Proposed Model ◽  
Lode Angle ◽  
Fully Coupled

This paper deals with the prediction of ductile damage based on CDM approach fully coupled with advanced elastoplastic constitutive equations. This fully coupled damage model is developed based on the total energy equivalence assumption under the thermodynamics of irreversible processes framework with state variables. In this model, the damage evolution is enhanced by accounting for both stress triaxiality and Lode angle. The proposed constitutive equations are implemented into Finite Element (FE) code ABAQUS/Explicit through a user material subroutine (VUMAT). The material parameters are determined by the hybrid experimental-numerical method using various tensile and shear tests. Validation of the proposed model has been done using different tests of two aluminum alloys (Al6061-T6 and Al6014-T4). Through comparisons of numerical simulations with experimental results for different loading paths, the predictive capabilities of the proposed model have been shown. The model is found to be able to capture the initiation as well as propagation of macro-crack in sheet and bulk metals during their forming processes.

A Ductile Damage Nonlocal Model of Integral-type at Finite Strains: Formulation and Numerical Issues

2011 ◽  
Vol 20 (4) ◽  
pp. 515-557 ◽  
Author(s):  
F.X.C. Andrade ◽  
J.M.A. César de Sá ◽  
F.M. Andrade Pires
Keyword(s):  
Constitutive Model ◽  
Nonlinear Complementarity Problem ◽  
Finite Strains ◽  
Ductile Damage ◽  
Local Theory ◽  
Local Form ◽  
Nonlocal Model ◽  
Numerical Implementation ◽  
Integral Type ◽  
Classical Formulation

This contribution is devoted to the formulation and numerical implementation of a ductile damage constitutive model enriched with a thermodynamically consistent nonlocal theory of integral type. In order to describe ductile deformation, the model takes finite strains into account. To model elasticity, a Hencky-like hyperelastic free energy potential coupled with nonlocal damage is adopted. The thermodynamic consistency of the model is ensured by applying the first and second thermodynamical principles in the global form and the dissipation inequality can be re-written in a local form by incorporating a nonlocal residual that accounts for energy exchanges between material points of the nonlocal medium. The thermodynamically consistent nonlocal model is compared with its associated classical formulation (in which nonlocality is merely incorporated by averaging the damage variable without resorting to thermodynamic potentials) where the thermodynamical admissibility of the classical formulation is demonstrated. Within the computational scheme, the nonlocal constitutive initial boundary value problem is discretized over pseudo-time where it is shown that well established numerical integration strategies can be straightforwardly extended to the nonlocal integral formulation. A modified Newton-Raphson solution strategy is adopted to solve the nonlinear complementarity problem and its numerical implementation, regarding the proposed nonlocal constitutive model, is presented in detail. The results of two-dimensional finite element analyses show that the model is able to eliminate the pathological mesh dependence inherently present under the softening regime if the local theory is considered.

scholarly journals A New Model Describing Plastic Distortion Fully Coupled with Ductile Damage

2014 ◽  
Vol 81 ◽  
pp. 1234-1239 ◽  
Author(s):  
Zhenming Yue ◽  
Houssem Badreddine ◽  
Khemais Saanouni
Keyword(s):  
Ductile Damage ◽  
New Model ◽  
Plastic Distortion ◽  
Fully Coupled

On non-associative anisotropic finite plasticity fully coupled with isotropic ductile damage for metal forming

2010 ◽  
Vol 26 (11) ◽  
pp. 1541-1575 ◽  
Author(s):  
Houssem Badreddine ◽  
Khemaïs Saanouni ◽  
Abdelwaheb Dogui
Keyword(s):  
Metal Forming ◽  
Ductile Damage ◽  
Finite Plasticity ◽  
Fully Coupled
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