Accounting Bauschinger effect in the numerical simulation of constrained groove pressing process

Kumar, Sunil; Hariharan, K.; Digavalli, Ravi Kumar; Paul, Surajit Kumar

doi:10.1016/j.jmapro.2018.12.013

Cited by 24 publications

(18 citation statements)

References 57 publications

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“…As well as with the central path, the surface path strain values increase when increasing the coefficient of friction alongside with an increase in strain uniformity. However, this increase in strain uniformity is relative as there is a marked difference between the surface and central path strain behavior, which was also reported by Kumar et al (16) who found different strain patterns not only between the surface and central path but also between the top and bottom surfaces themselves, also compromising the grain refinement homogeneity.…”

Section: Variation In the Coefficient Of Frictionsupporting

confidence: 66%

Análisis por elementos finitos del proceso de presión calibrada restringida en la deformación de láminas de hierro armco

Cobos

Mendoza-Cuesta

Suárez-Granados

et al. 2021

inycomp

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Se llevó a cabo un análisis exhaustivo del comportamiento elastoplástico de láminas de hierro ARMCO sometidas a deformación plástica severa (SPD) mediante la técnica de presión calibrada restringida (CGP) por medio del método de elementos finitos (FEM). Se consideraron parámetros como la geometría de la matriz y el coeficiente de fricción para estudiar sus efectos en la respuesta elasto-plástica del material. Para ello se utilizó ANSYS workbench para las simulaciones por elementos finitos. Los resultados mostraron que los parámetros estudiados influyen de forma diferente no sólo en la deformación alcanzada sino también en la distribución de la deformación a través de la lámina.

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Section: Variation In the Coefficient Of Frictionsupporting

confidence: 66%

Análisis por elementos finitos del proceso de presión calibrada restringida en la deformación de láminas de hierro armco

Cobos

Mendoza-Cuesta

Suárez-Granados

et al. 2021

inycomp

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“…The reduction of strength due to plastic pre-strain is a question of major relevance in various research and application areas. This finding furthered the advancements in the theory of the mechanical behaviour of materials in the plastic regime under cyclic loading [1,3,[8][9][10][11][12][13][14][15][16], as well as the technological innovations in cold plastic strain conforming processes [17][18][19][20]. On the one hand, deeper knowledge about the material mechanical response allows one to optimise the plastic strain conforming processes, avoiding excessive material damage in load reversals, and on the other, this facilitates more accurate predictions (e.g., from numerical simulations) of the performance of materials undergoing cyclic strain hardening.…”

Section: Introductionmentioning

confidence: 81%

Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

Toribio

Kharin

Ayaso

et al. 2020

Metals

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Prestressing steel wires usually undergo cyclic loading in service. Therefore, it is of interest to analyse certain features of their mechanical behaviour under this type of loading, such as the Bauschinger effect (BE) or the hardening rule, that fit the real mechanical behaviour appropriately. In this study, different samples of high strength pearlitic steel wires were subjected to cyclic tension-compression load exceeding the material yield strength, thus generating plastic strains. From the experimental results, various parameters were obtained revealing that analysed steels exhibited the so-called Masing type BE. In addition, the variation of the BE characteristics (of the effective and internal stresses) with the applied plastic pre-strain indicated that the studied materials followed a mixed strain hardening rule with the domination of the kinematic component.

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“…Therefore, material anisotropy occurs after CGP due to the difference in strength in the two orientations. 70,73,82 Researchers have used numerical techniques to simulate the deformation behavior and strain distribution during CGP. Lee and Park 54 first demonstrated the FE simulation of CGP and CGR processes and reported nonuniform strain distribution throughout the sample.…”

Section: Finite Element Simulationmentioning

confidence: 99%

“…A color map in finite element meshed model of equivalent plastic strain after every four stages of CGP sample. 82 Sheet metal operations of CGP-processed sheet Some researchers have tried to perform metal forming operations on processed samples through CGP or simple groove pressing. Figure 15 shows the deep drawing cup of the processed aluminum sample.…”

Section: Finite Element Simulationmentioning

confidence: 99%

“…Like experiments, some researchers also tried to simulate metals and alloys such as 316 and 304 austenitic steel in, 66,67 H62 brass, 57 and low carbon steel. 82 The dies and sample are modeled as discrete rigid and deformable shell bodies respectively. During the CGP process model, displacement-based boundary conditions are adopted in the upper grooved and flat dies where assigned displacement is dependent on the adopted die geometry and sample thickness.…”

Section: Fundamentals Involved In Conventional Cgpmentioning

confidence: 99%

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Developing methods of constrained groove pressing technique: A review

Kumar

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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Among various severe plastic deformation (SPD) techniques, constrained groove pressing (CGP) has arisen as a famous technique for fabricating ultrafine-grained sheet metals and alloys in recent times. The severe strain is applied to improve the mechanical performance and properties. However, inhomogeneous grain refinement, lower formability, surface unevenness, and microcracks are the common limitations of conventional CGP-processed samples. Therefore, this review inspects the latest progress through modifications of the CGP process and compares the process efficacy with the conventional process. Advanced CGP processing techniques, such as modification of die design, annealing of the processed sample, cross CGP, ring CGP, hybrid SPD, covered sheet casing CGP, and rubber pad CGP, are emerging techniques to up-scale the procedure and improve the grain refinement and thereby produce superior mechanical properties. In this review paper, the historic research of conventional CGP and its effect on grain refinement and mechanical properties is initially briefed and then recent progress through different advanced techniques is highlighted, especially in alloys. Albeit significant progress has been observed in CGP, the future scope and successful usage of CGP-processed samples in actual practice are discussed in the last stage.

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Accounting Bauschinger effect in the numerical simulation of constrained groove pressing process

Cited by 24 publications

References 57 publications

Análisis por elementos finitos del proceso de presión calibrada restringida en la deformación de láminas de hierro armco

Análisis por elementos finitos del proceso de presión calibrada restringida en la deformación de láminas de hierro armco

Analysis of the Bauschinger Effect in Cold Drawn Pearlitic Steels

Developing methods of constrained groove pressing technique: A review

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