Modelling of plastic anisotropy based on texture and dislocation structure

Hiwatashi, Shunji; Bael, Albert Van; Houtte, Paul Van; Teodosiu, Cristian

doi:10.1016/s0927-0256(97)00069-4

Cited by 45 publications

(30 citation statements)

References 8 publications

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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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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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“…Garmestani et al (2002) presented a crystal plasticity based modeling framework for the evolution of anisotropy in Al-Li alloys. Loadings with stain path changes are also an important issue in subsequent deformation (Hiwatashi et al, 1997;Hiwatashi et al, 1998;Kuwabara et al, 2000;Hoc and Forest, 2001;El-Danaf et al, 2001). Hiwatashi et al (1997) developed a model based on the microstructure and simulated deformation due to the loading with a strain-path change.…”

Section: Introductionmentioning

confidence: 99%

“…Loadings with stain path changes are also an important issue in subsequent deformation (Hiwatashi et al, 1997;Hiwatashi et al, 1998;Kuwabara et al, 2000;Hoc and Forest, 2001;El-Danaf et al, 2001). Hiwatashi et al (1997) developed a model based on the microstructure and simulated deformation due to the loading with a strain-path change. Hoc and Forest (2001) conducted plane strain tests followd by uniaxial tensile tests on IF-Ti steel to determine the hardening law.…”

Section: Introductionmentioning

confidence: 99%

Investigation of subsequent viscoplastic deformation of austenitic stainless steel subjected to cyclic preloading

Mayama

Sasaki

2006

International Journal of Plasticity

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This paper investigates the effects of cyclic preloading on the subsequent viscoplastic deformation. A series of experiments such as the subsequent creep, subsequent stress relaxation, and cyclic loading with strain rate changes after cyclic preloading were conducted with Type 304 stainless steel at room temperature. The cyclic proportional and non-proportional loadings were conducted as cyclic preloadings.Tension-compression loading was chosen as the cyclic proportional loading, and circular and cruciform loading as the cyclic non-proportional loading. The experimental results showed that the subsequent deformation changes with the number of cycles of cyclic preloading. The differences in the subsequent deformation were examined by transmission electron microscopy (TEM). The observations suggest that changes in the dislocation structure depending on the number of cycles of cyclic preloading affect the subsequent viscoplastic deformation.

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“…It should however be noticed that the fourth-order tensor S must be decomposed into S D the strength of the dislocation structure associated with the currently active slip systems and S L , the part of S associated with the latent slip systems, according to Equation (16). The implementation of Teodosiu and Hu's hardening model into one FE code is not straightforward [4]. Equation (15), describing the evolution of the state variables, must be adapted to be introduced in FE codes, due to the discretization of the time evolution.…”

Section: Hardening Modelsmentioning

confidence: 99%

“…"Minty" texture based yield locus [2] coupled with the microstructural Teodosiu and Hu hardening model [3, 4,5] were investigated. A particular attention was paid to their implementation in the self-made FE code LAGAMINE (developed at the M&S department since 1984; see [6,7] for some applications of this code).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Texture Evolution and Hardening Behavior during Deep Drawing with an Improved Mixed Type FEM Element

Duchêne

Montleau²,

Houdaigui³

et al. 2005

AIP Conference Proceedings

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Abstract. In the present study, deep drawing simulations were investigated using a recently developed mixed type finite element (FE): the BWD3D. The main formulation of the element is described, with particular focus on the shear locking treatment. Two hardening models used in the presented simulations are described: the isotropic Swift's model and the physically based microstructural Teodosiu and Hu model. Finally, deep drawing results, in terms of earing profile, are compared to experiment. Special attention is paid to the effects of texture evolution and hardening models; the method used to implement Teodosiu and Hu hardening model is also discussed.

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Modelling of plastic anisotropy based on texture and dislocation structure

Cited by 45 publications

References 8 publications

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

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

Investigation of subsequent viscoplastic deformation of austenitic stainless steel subjected to cyclic preloading

Analysis of Texture Evolution and Hardening Behavior during Deep Drawing with an Improved Mixed Type FEM Element

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