A reduced single-pattern model for the numerical simulation of multi-pattern metal forming

Tajdary, Pouya; Morin, Léo; Braham, C.; González, G.

doi:10.1007/s12289-021-01636-6

Cited by 6 publications

(4 citation statements)

References 34 publications

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“…72) Multimodal grain size distributions after RCS can be encouraged by the die geometry and by avoiding the 90°r otation between passes. 120) Examples of multimodal structures have been widely reported in the literature. 119,[121][122][123][124][125][126] The synergistic performance of nanometric, UFG, and micrometric grains which coexist in the same structure, has been shown to increase the bulk yield strength.…”

Section: Repetitive Corrugation and Straightening (Rcs)mentioning

confidence: 99%

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Heterostructured Materials by Severe Plastic Deformation: Overview and Perspectives

Romero-Resendiz,

Naeem,

Zhu

2023

Mater. Trans.

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Heterostructured materials (HSMs) constitute heterogeneously distributed soft and hard zones with a mismatch in mechanical or physical properties of at least 100% between them. A synergistic effect resulting from the interactive coupling between the heterogeneous zones surpasses the properties predicted by the rule of mixtures. Therefore, the mechanical or physical properties of HSMs are not achievable by their homogeneous counterparts. HSM production commonly requires plastic deformation to refine the microstructure and subsequent partial recrystallization heat-treatments to obtain heterogeneous distributions of grain size, texture, or defect density. Other routes are by applying surface plastic deformation or by stacking layers with a high property mismatch between them. All of those routes can be achieved by severe plastic deformation (SPD) techniques. This overview focuses on describing the fundamentals of HSMs produced by SPD. A critical description of the physics of SPD and HSMs, as well as the factors influencing their microstructural evolution, perspectives, and outstanding issues, are included. A critical comparison of the strength-ductility relationship in HSMs produced by different SPD techniques is also included to guide upcoming research. This overview is intended to serve as a basis for understanding and designing future HSMs produced by SPD.

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Section: Repetitive Corrugation and Straightening (Rcs)mentioning

confidence: 99%

“…119,121) Other works have focused on the simulation of fracture or residual stress in RCS-processed multimodal materials. 120,[127][128][129]…”

Section: Repetitive Corrugation and Straightening (Rcs)mentioning

confidence: 99%

Heterostructured Materials by Severe Plastic Deformation: Overview and Perspectives

Romero-Resendiz,

Naeem,

Zhu

2023

Mater. Trans.

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“…The die profile is based on two perpendicular sinusoidal functions of period 16 mm, which is suitable for a sheet thickness of about 1 mm, so the size of an elementary pattern is 16 × 16 × 1 mm (see Elizalde et al [20]). We consider only one elementary pattern subjected to symmetric-periodic boundary conditions which is representative of a central pattern of the multi-pattern process [21]. The corrugation dies and straightening plates are rigid and the sheet is deformable.…”

Section: Description Of Processing By Repetitive Corrugation and Stra...mentioning

confidence: 99%

A Deconvolution Method for the Mapping of Residual Stresses by X-Ray Diffraction

et al. 2022

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Background Inherent averaging effects in X-ray diffraction measurement of residual stresses, related to the finite size of the irradiated area, lead to inaccurate measurements in the presence of high surface stress gradients. Objective This paper develops a reconstruction method which allows the mapping of heterogeneous residual stresses from X-ray diffraction averaged measurements. Methods The stress reconstruction is based on a deconvolution of the average XRD measurements. The combination of a fine measurement grid and the use of two collimators lead to an overdetermined linear system on the average stress measured experimentally whose inversion provides the values of the local stress field. Results First, the method is successfully assessed in a reference problem solved by FEM in which the local distribution and average datasets are known. Then, it is applied to the reconstruction of residual stress mapping from experimental XRD measurements of a specimen processed by repetitive corrugation and straightening. The reconstructed field is in agreement with numerical (local) results of the process. ConclusionThe method developed in this work permits the reconstruction of accurate distributions of heterogeneous nearsurface residual-stresses.

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“…Numerical model A 3D finite element model of the corrugation processing has been made using the commercial code ABAQUS/Standard. Following Tajdary et al (2021) (see also Ezequiel et al (2020)), the simulation of multi-pattern RCS can be performed on a single elementary pattern subjected to symmetric boundary conditions on its lateral edges (see Fig. 17).…”

Section: Description Of the Numerical Simulationsmentioning

confidence: 99%

Analysis of shear ductile damage in forming processes using a micromechanical model with void shape effects

Tajdary

Morin

Romero-Reséndiz

et al. 2022

International Journal of Solids and Structures

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A reduced single-pattern model for the numerical simulation of multi-pattern metal forming

Cited by 6 publications

References 34 publications

Heterostructured Materials by Severe Plastic Deformation: Overview and Perspectives

Heterostructured Materials by Severe Plastic Deformation: Overview and Perspectives

A Deconvolution Method for the Mapping of Residual Stresses by X-Ray Diffraction

Analysis of shear ductile damage in forming processes using a micromechanical model with void shape effects

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