The effects of texture on formability of aluminum alloy sheets

Yoshida, Kengo; Ishizaka, Takumi; Kuroda, Mitsutoshi; Ikawa, Shingo

doi:10.1016/j.actamat.2007.04.014

Cited by 138 publications

(52 citation statements)

References 15 publications

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“…However, the two FLDs differ significantly in the positive range of strain-path ratios, especially in the vicinity of equibiaxial stretching. This observation is consistent with other reports in the literature (Barlat, 1987;Wu et al, 2004;Yoshida et al, 2007;Signorelli et al, 2009). It has been found that the initial and induced plastic anisotropy mainly influence the yield surface shape and its evolution during plastic deformation.…”

Section: Numerical Resultssupporting

confidence: 83%

Computationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database

Gupta

Bettaieb

Abed‐Meraim

et al. 2018

International Journal of Plasticity

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible.This is an author-deposited version published in: https://sam.ensam.eu Handle ID: .http://hdl.handle.net/10985/13136 To cite this version :Akash GUPTA, Mohamed BEN BETTAIEB, Farid ABED-MERAIM, Surya KALIDINDIComputationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database -International Journal of Plasticity -Vol. 103, p.168-187 -2018 Any correspondence concerning this service should be sent to the repository A B S T R A C TThe present investigation focuses on the development of a fast and robust numerical tool for the prediction of the forming limit diagrams (FLDs) for thin polycrystalline metal sheets using a Taylor-type (full constraints) crystal plasticity model. The incipience of localized necking is numerically determined by the well-known Marciniak-Kuczynski model. The crystal plasticity constitutive equations, on which these computations are based, are known to be highly nonlinear, thus involving computationally very expensive solutions. This presents a major impediment to the wider adoption of crystal plasticity theories in the computation of FLDs. In this work, this limitation is addressed by using a recently developed spectral database approach based on discrete Fourier transforms (DFTs). Significant improvements were made to the prior approach and a new database was created to address this challenge successfully. These extensions are detailed in the present paper. It is shown that the use of the database allows a significant reduction in the computational cost involved in crystal plasticity based FLD predictions (a reduction of about 96% in terms of CPU time).

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Section: Numerical Resultssupporting

confidence: 83%

Computationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database

Gupta

Bettaieb

Abed‐Meraim

et al. 2018

International Journal of Plasticity

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“…Wu et al's (2004a) results do not show this expected behavior; their calculated forming-limit curves for cube-11° and cube-15° are significantly higher than that of the random texture near equi-biaxial stretching. These results were confirmed by Yoshida et al (2007) using the same modeling hypothesis. Our simulations are similar to those reported by Wu et al when the MK-FC approach is used.…”

Section: Influence Of Cube Texture On Sheet-metal Formabilitysupporting

confidence: 79%

“…It is widely recognized that the crystallographic texture strongly affects forming-limit diagrams and the macroscopic anisotropy of polycrystalline sheet metals. Numerous authors have adopted the MK model in conjunction with a crystal plasticity model to describe strain localization in rolled sheets (Kuroda & Tvergaard, 2000;Knockaert et al, 2002;Wu et al, 2004a;Inal et al, 2005;Yoshida et al, 2007;Neil & Agnew, 2009). Based on this strategy, the authors have examined how plastic anisotropy influences limit strains .…”

Section: Introductionmentioning

confidence: 99%

Self-Consistent Homogenization Methods for Predicting Forming Limits of Sheet Metal

Signorelli¹,

Bertinetti²

2012

Metal Forming - Process, Tools, Design

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“…Wu et al, 2003). Motivated by the works on effects of texture on formability of aluminum alloy sheets (Wu et al, 2004a;Kuroda and Ikawa, 2004;Yoshida et al, 2007). recently investigated how the cube texture affects the formability of FCC sheet metals.…”

Section: Introductionmentioning

confidence: 99%

On crystal plasticity formability analysis for magnesium alloy sheets

Wang

Boyle³

et al. 2011

International Journal of Solids and Structures

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a b s t r a c tSheet metal formability is assessed in terms of the Forming Limit Diagram (FLD) for magnesium alloys with Hexagonal Close Packed (HCP) crystallographic structure. All simulations are based on the recently developed elastic-visco-plastic self-consistent (EVPSC) model and the classical Taylor model, in conjunction with the M-K approach. The role of crystal plasticity models and the effects of basal texture on formability of magnesium alloy AZ31B sheet are studied numerically. It is observed that formability in HCP polycrystalline materials is very sensitive to the intensity of the basal texture. The path-dependency of formability is examined based on different non-proportional loading histories, which are combinations of two linear strain paths. It is found that while the FLD in strain space is very sensitive to strain path changes, the Forming Limit Stress Diagram (FLSD) in stress space is much less path-dependent. It is suggested that the FLSD is much more favourable than the FLD in representing forming limits in the numerical simulation of sheet metal forming processes. The numerical results are found to be in good qualitative agreement with experimental observations.

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The effects of texture on formability of aluminum alloy sheets

Cited by 138 publications

References 15 publications

Computationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database

Computationally efficient predictions of crystal plasticity based forming limit diagrams using a spectral database

Self-Consistent Homogenization Methods for Predicting Forming Limits of Sheet Metal

On crystal plasticity formability analysis for magnesium alloy sheets

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