Anisotropic work-hardening behaviour of structural steels and aluminium alloys at large strains

Bouvier, Salima; Teodosiu, Cristian; Haddadi, H.; Tabacaru, V.

doi:10.1051/jp4:20030190

Cited by 18 publications

(26 citation statements)

References 1 publication

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“…2 and 3 overview the capability of the two models to predict the transient behavior after abrupt strain-path change, represented in terms of true stress versus true strain for the uniaxial tensile tests and shear stress versus amount of shear for the shear tests. As underlined by Bouvier et al (2003), the predictions of the two models differ especially in the transition zone after abrupt strain-path changeswhile their monotonic responses are almost identical. The Teodosiu-Hu model provides an improved capability to describe the real transient hardening behavior for a wide range of sheet metals (Teodosiu andHu, 1995, 1998;Bouvier et al, 2003).…”

Section: Rheological Tests Simulationmentioning

confidence: 96%

Investigation of advanced strain-path dependent material models for sheet metal forming simulations

Haddag

Balan

Abed‐Meraim

2007

International Journal of Plasticity

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Sheet metal forming processes often involve complex loading sequences. To improve the prediction of some undesirable phenomena, such as springback, physical behavior models should be considered. This paper investigates springback behavior predicted by advanced elastoplastic hardening models which combine isotropic and kinematic hardening and take strain-path changes into account. A dislocation-based microstructural hardening model formulated from physical observations and the more classical cyclic model of Chaboche have been considered in this work. Numerical implementation was carried out in the ABAQUS software using a return mapping algorithm with a combined backward Euler and semi-analytical integration scheme of the constitutive equations. The capability of each model to reproduce transient hardening phenomena at abrupt strain-path changes has been shown via simulations of sequential rheological tests. A springback analysis of strip drawing tests was performed in order to emphasize the impact of several influential parameters, namely: process, numerical, and behavior parameters. The effect of the two hardening models with respect to the process parameters has been specifically highlighted.

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Section: Rheological Tests Simulationmentioning

confidence: 96%

Investigation of advanced strain-path dependent material models for sheet metal forming simulations

Haddag

Balan

Abed‐Meraim

2007

International Journal of Plasticity

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“…Orthogonal tests are performed by successive simple shear and tensile tests. Such experimental results provide the necessary data to support simple models, like the one suggested by Armstrong and Frederick (1966) or more complex ones like the Teodosiu and Hu model (Teodosiu and Hu, 1995;Teodosiu and Hu, 1998;Bouvier et al, 2003;Haddadi et al, in press). Other deformation modes can be investigated for the identification of material parameters.…”

Section: Introductionmentioning

confidence: 97%

Model identification and FE simulations: Effect of different yield loci and hardening laws in sheet forming

Flores

Duchêne

Bouffioux

et al. 2007

International Journal of Plasticity

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“…Among the material models accounting for these additional effects, that of Teodosiu and Hu [33,34] has been used by a number of authors e.g. [3][4][5]11] to model the induced anisotropic hardening behavior and investigate its effect on forming processes [4,15,36].…”

Section: Introductionmentioning

confidence: 99%

Phenomenological modeling of anisotropy induced by evolution of the dislocation structure on the macroscopic and microscopic scale

et al. 2011

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This work focuses on the modeling of the evolution of anisotropy induced by the development of the dislocation microstructure. A model formulated at the engineering scale in the context of classical metal plasticity and a model formulated in the context of crystal plasticity are presented. Images obtained by transmission-electron microscopy (TEM) show the influence of the strain path on the evolution of anisotropy for the case of two common materials used in sheet metal forming, DC06 and AA6016-T4. Both models are capable of accounting for the transient behavior observed after changes in loading path for fcc and bcc metals. The evolution of the internal variables of the models is correlated with the evolution of the dislocation structure observed by TEM investigations.

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Anisotropic work-hardening behaviour of structural steels and aluminium alloys at large strains

Cited by 18 publications

References 1 publication

Investigation of advanced strain-path dependent material models for sheet metal forming simulations

Investigation of advanced strain-path dependent material models for sheet metal forming simulations

Model identification and FE simulations: Effect of different yield loci and hardening laws in sheet forming

Phenomenological modeling of anisotropy induced by evolution of the dislocation structure on the macroscopic and microscopic scale

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