Finite element analysis of the effect of blanked edge quality upon stretch flanging of AHSS

Sartkulvanich, Partchapol; Kroenauer, B.; Golle, Roland; Konieczny, A.; Altan, Taylan

doi:10.1016/j.cirp.2010.03.108

Cited by 67 publications

(21 citation statements)

References 3 publications

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“…This analytical code includes automatic mesh generation, which allows users to specify the remeshing and optimization criteria for an intelligent mesh based on the behavior of the solution. In addition, this analytical code generates cut surface features [12][13][14] and flange shapes [3,6,10,11] that are in good agreement with those obtained experimentally. Table 1 shows the process parameters used in punching and flange-forming operations.…”

Section: The Fem Simulation and Experimental Proceduressupporting

confidence: 67%

“…The punching and flangeforming speeds were set at 4 mm/s. Given the use of lubricants during the punching and flange-forming phases, the Coulomb friction model with a friction coefficient of 0.1 was applied as in previous research [3,6,[10][11][12]. Rectangular elements of approximately 5,000 elements were set for the workpiece, and a fine mesh density was assigned to the deformation zone.…”

Section: The Fem Simulation and Experimental Proceduresmentioning

confidence: 99%

“…2, are the poor squareness of the flange edge, large die-roll formation, and fracture. Previously, several authors [1][2][3][4][5][6][7][8][9][10][11] have studied the hole flanging process and its associated problems. Chen [1] analyzed the forming limit in the elliptical hole flanging process.…”

Section: Introductionmentioning

confidence: 99%

“…Hyun et al [2] estimated the hole flangeability for high-strength steel plates. Sartkulvanich et al [3] investigated the effects of blanked edge quality on stretch flanging of advanced high-strength steel using the finite element method (FEM). Lin et al [4] and Cao et al [5] studied hole flanging with cold extrusion on sheet metals by FEM simulation.…”

Section: Introductionmentioning

confidence: 99%

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Finite element analysis of flange-forming direction in the hole flanging process

Thipprakmas

Phanitwong

2011

Int J Adv Manuf Technol

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The hole flanging process, in which a pre-holed workpiece is expanded by a larger punch, is frequently used in many industries. However, due to the large number of process parameters and their complicated relationships, poor flange edge squareness is commonly generated and results in an increase of secondary operation. In this study, to improve the quality of flange parts, finite element method (FEM) was used to investigate the flange-forming mechanism and effects of upward and downward burr orientation flange-forming directions. Laboratory experiments were performed to validate the accuracy of the FEM simulation results. The FEM simulation results clearly explained the flange-forming mechanism, as well as the effects of flange-forming direction, based on stress distribution analysis. Upward and downward burr orientation flange-forming directions were suitably applied for large and small hole expansion ratios, respectively. In addition, the effects of other process parameters related to the flangeforming direction, including punching clearance, flange thickness, and hole expansion ratios, were also investigated. The FEM simulation results showed good agreement with the laboratory experiments. These results showed that to achieve good squareness at the flange edge, the use of upward and downward burr orientation flange-forming direction and its relation to the other process parameters need to be considered.

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Section: The Fem Simulation and Experimental Proceduressupporting

confidence: 67%

Section: The Fem Simulation and Experimental Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Finite element analysis of flange-forming direction in the hole flanging process

Thipprakmas

Phanitwong

2011

Int J Adv Manuf Technol

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“…To investigate edge cracks, Sartkulvanich et al [3] focused on numerical modeling and experimented with the blanking and hole expansion of DP590 steel, characterizing the edge quality of various die clearances and demonstrating the effect that a sheared edge exerts on stretchability. Konieczny and Henderson [4] presented sheared-edge failure modes for advanced high strength steel (AHSS) subjecting to various loading modes, and discussed the influence of blanking clearance and edge morphology parameters on formability.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of failure mode in geometrically imperfect DP590 steel

Zhuang

Cheng

Zhao

2015

Sci. China Technol. Sci.

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Various microstructure-level finite element models were generated according to the real microstructure of DP590 steel to capture the mechanical behavior and fracture mode. The failure mode of the dual-phase (DP) steels, mainly resulting from microstructure-level inhomogeneity and initial geometrical imperfection, was predicted using the plastic strain localization theory. In addition, dog-bone-type tensile test specimens with different edge qualities were prepared and the deformation processes were recorded using a digital image correlation system. When the steel exhibited no initial geometrical imperfection, void initiation was triggered by decohesion between martensite and ferrite which was predicted based on the severe strain concentration, or tensile stress in areas where stress triaxiality and strain values were high. Final failure was caused by shear localization in the vicinity. Moreover, the initial geometrical imperfections severely affected the overall ductility and failure mode of the DP590 steel. When initial geometrical imperfections were deeply ingrained, an incipient crack began at the site of initial geometrical imperfection, and then caused progressive damage throughout the microstructure, from the area of shear localization to the final fracture. Overall, the depth of the geometrical imperfection was the critical factor in determining whether internal decohesion or a local crack plays a dominant role.representative volume element, dual-phase (DP) steel, geometrical imperfection, failure mode Citation:Zhuang X C, Xu C, Zhao Z. Experimental and numerical investigation of failure mode in geometrically imperfect DP590 steel.

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Development of Sheet Metal Die by Using CAD and Simulation Technology to Improvement of Quality

Ramteke¹,

Waghmare²,

Shelare³

et al. 2021

Lecture Notes on Multidisciplinary Industrial Engineering

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Finite element analysis of the effect of blanked edge quality upon stretch flanging of AHSS

Cited by 67 publications

References 3 publications

Finite element analysis of flange-forming direction in the hole flanging process

Finite element analysis of flange-forming direction in the hole flanging process

Experimental and numerical investigation of failure mode in geometrically imperfect DP590 steel

Development of Sheet Metal Die by Using CAD and Simulation Technology to Improvement of Quality

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