On the numerical simulation of sheet metal blanking process

Canales, Cristian; Bussetta, Philippe; Ponthot, Jean‐Philippe

doi:10.1007/s12289-015-1270-7

Cited by 18 publications

(6 citation statements)

References 46 publications

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“…The influence of the ball burnishing process on the yield stress σ Y , ultimate stress σ U , uniform elongation ε U , percentage of elongation to fractrure % El and the work hardening based on the stress-strain curves of the material were analyzed. These tensile properties are of great interest in sheet metal forming operations when severe plastic deformation, springback and formability are analyzed [2,[43][44][45].…”

Section: Effect Of Ball Burnishing Parameters On Tensile Properties Anisotropy and Work Hardeningmentioning

confidence: 99%

Effect of the ball burnishing on the surface quality and mechanical properties of a TRIP steel sheet

Capilla-González

Martínez-Ramírez

Diaz-Infante³

et al. 2021

Int J Adv Manuf Technol

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Ball burnishing is a finishing technique involving plastic deformation on the workpiece surface. In this paper, the influence of the ball burnishing operation on the average roughness, tensile properties, anisotropy and work hardening of a TRIP steel was analyzed. An experimental study of the effect of the ball burnishing process on uniaxial tensile specimens was conducted using the Response Surface Methodology (RSM) based on a 3 2 Factorial Design (FD). The effects of burnishing force (B F ) and the number of tool passes (N P ) on the average roughness (R a ), the yield stress (σ Y ) and the percentage of elongation to fracture (% El) were evaluated. The quadratic regression models were obtained to predict R a and σ Y with determination coefficients (R 2 ) of 0.85 and 0.99, respectively. The results indicated that the ball burnishing process produces a maximum reduction of R a of 81.7% (from 1.250 to 0.229 μm). Also, it was observed that the ductility of the material increased in a 25% and the yield stress and work hardening can be substantially modified. Finally, it was found that by using the ball burnishing process, the planar anisotropy of the sheet can be reduced.

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Section: Effect Of Ball Burnishing Parameters On Tensile Properties Anisotropy and Work Hardeningmentioning

confidence: 99%

Effect of the ball burnishing on the surface quality and mechanical properties of a TRIP steel sheet

Capilla-González

Martínez-Ramírez

Diaz-Infante³

et al. 2021

Int J Adv Manuf Technol

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“…22) Several punching simulations have shown that cracks initiate at the punch corner during punching. [23][24][25] The tendency of the results in Figs. 9 and 10 agrees with these previous studies.…”

Section: Validity Of Fe Model Of Punching Testmentioning

confidence: 87%

Prediction Method of Void Distribution near Punched Surface of Medium-Carbon Steel Sheet using Scrap

et al. 2021

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The objective of this study was to confirm the validity of the prediction method of void distribution near a punched surface of a blank (holder side) by observing the void distribution of scrap (hole side). It is important to know the exact void number density and void area fraction through an appropriate evaluation method such as that mentioned, just where a crack occurs owing to stretch-flange deformation in the same individual sample because the crack and the void behaviors fluctuate from sample to sample and with position, even under the same punching condition. This study investigated the correlation of void distribution near punched fracture surfaces of the blank and scrap in medium-carbon steel. The voids near the punched fracture surfaces of the blank and the scrap were measured using SEM images. The voids of the blank and the scrap were distributed point-symmetrically with respect to the center of the fracture surface. The equivalent plastic strain and the stress triaxiality that were analyzed with FE analysis were also distributed point-symmetrically. The void distribution of scrap was shifted to the sheared surface side, compared to that of the blank. To predict the void distribution of the blank using the scrap, the void distribution of the scrap with the burr side as a reference point was approximated by a cubic function. Furthermore, the void distribution of the scrap shifted to the burr side. The prediction method of void distribution near punched surface by scrap was validated by considering stress and strain during punching.

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“…The strain hardening and the necking point are thus well captured by the elastoplastic model (no damage). For the case of the blanking test, the numerical framework described by Canales et al [23] for quasi-static blanking operations was adopted. Here, a 2D axisymmetric FE model was considered and global remeshing steps were required to avoid high distortion of elements during the simulation.…”

Section: Uncoupled Damage Modelsmentioning

confidence: 99%

Numerical prediction of ductile failure in the blanking process by means of uncoupled and coupled phenomenological damage models

Canales

Ponthot

2016

MATEC Web Conf.

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Abstract. Fracture prediction in blanking has gained great attention due to increasing requirements of high-quality products. In this work, the predictive capabilities of different uncoupled and coupled damage models, recently implemented in a fully implicit homemade FE code, for blanking process are compared. Some advanced models considered here include damage sensitivity to both triaxiality and Lode angle in their formulation. The material characterization is based on the history of internal variables during loading, where different mechanical tests are considered. Finally, numerical and experimental results are compared for a wide range of different geometries of blanking.

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On the numerical simulation of sheet metal blanking process

Cited by 18 publications

References 46 publications

Effect of the ball burnishing on the surface quality and mechanical properties of a TRIP steel sheet

Effect of the ball burnishing on the surface quality and mechanical properties of a TRIP steel sheet

Prediction Method of Void Distribution near Punched Surface of Medium-Carbon Steel Sheet using Scrap

Numerical prediction of ductile failure in the blanking process by means of uncoupled and coupled phenomenological damage models

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