Springback Analysis of High Strength Dual-phase Steels

Tisza, Miklós; Lukács, Zsolt

doi:10.1016/j.proeng.2014.10.127

Cited by 13 publications

(8 citation statements)

References 5 publications

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“…As a comparison, research on the effect of steel thickness on Forming Limit Curves which conducted on material form steel DC04, DC05, and DD14 produces the same conclusion that overall the lowest Forming Limit Curve is produced by the steel with the thinnest size (Tisza & Lukács, 2014). This is supported by research on the effect of thickness on formability on steel carbon low (deep drawings quality) in where steel which experience Thickness reduction through the cold-rolling process results in a decrease in the strain limit in the plane strain and biaxial regions (Raghavan et al, 2010).…”

Section: Effect Of Thickness On Forming Limit Curvesmentioning

confidence: 87%

“…The value of r obtained for each steel thickness has an effect to Forming Limit Curves which formed in where strain on side left curve (-ε 2 ) or Uniaxial strain is affected by the value of r, while plane strain (middle) and biaxial strain (right) are affected by good ductility (Hudok, 1990). The more tall score r which owned by something material so will the greater the slope on the side of the curve so that the resulting strain limit will increase (Tisza & Lukács, 2014). Based on the test results, this can be seen on the left side of the curve or the uniaxial strain area in Figures 4.1 and 4.2 where steel with a thickness of 0.8 mm produces a higher degree of inclination and uniaxial strain than steel with a thickness of 0.7 mm.…”

Section: Effect Of Strain Hardening Coefficient (N) On the Forming Li...mentioning

confidence: 99%

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Influence of Thickness On The Forming Limit Curve On Low Carbon Steel With Thickness of 0.7 mm and 0.8 mm

Pratama¹,

Siradj²,

Rhaman³

et al. 2022

Eduvest

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Carbon steel low have nature mechanical specifically nature capable good form. Capability form on steel influenced by various factor among them that is thickness. Influence different thickness give effect significant to nature capable form described steel through Forming Limit Curve (FLC) or curve limit formation. Forming Limit Curve (FLC) is an important parameter for knowing nature capable form a material. So, it's important for knowing influence thickness in steel to the resulting Forming Limit Curve (FLC). The material used in the test this that is steel carbon low with thickness of 0.7 and 0.8 mm which has been screen printed pattern shaped lattice circle 2 mm in diameter in section surface. The stretching test was carried out based on method Nakazima using a shaped punch half circle or hemispherical with condition testing use lubricant and without lubricant. Test results in the form of major and minor strain data is used for create a Forming Limit Curve (FLC) model for each thickness on each condition testing. Research results show if steel carbon low with 0.8 mm thick produces more Forming Limit Curve (FLC) positions tall compared 0.7mm thickness is good in condition testing with lubricant or without lubricant.

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Section: Effect Of Thickness On Forming Limit Curvesmentioning

confidence: 87%

Section: Effect Of Strain Hardening Coefficient (N) On the Forming Li...mentioning

confidence: 99%

Influence of Thickness On The Forming Limit Curve On Low Carbon Steel With Thickness of 0.7 mm and 0.8 mm

Pratama¹,

Siradj²,

Rhaman³

et al. 2022

Eduvest

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“…Dual-phase sheets consist of ferrite and martensite islands. Bendability is an important property for ultra-high strength sheets due to the high amount of martensite phase [8]. Being able to predict the forward or backward springing behaviour of these sheets that occur with the application of bending provides endless benefits in terms of production.…”

Section: Introductionmentioning

confidence: 99%

Springback Prediction Performance and Experimental Analysis in the V-bending Process of SCGADUB1180 Advanced High-Strength Steel

2024

jjmie

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This study investigated the V-bending process of 1.2 mm thick SCGADUB1180 advanced-high-strength steel sheet plate by experimental and finite element method, and its springback behaviour was investigated in detail. In the experiments, 27 different V-bending experiments were modeled in three different punch radii (3mm, 6mm, 9mm), three different bending angle values (60°, 90° 120°), three different rolling directions (0°, 45°, 90°). In the experiments created with these input parameters, the effect of the sheets on the springback was investigated by comparing the experimental data with different material models. 108 analyses were performed for four different finite element models (Hill-48, Barlat-89, Hill-48-kinematic, Barlat-89kinematic). It was analyzed that the Barlat-89-kinematic strain hardening model was the closest model to the experimental results. In addition, with the help of the Minitab 18.0 statistics program, how well the finite element model data agreed with the experimental results was analyzed. It was observed that the variation of punch radius (83.03%) and bending angle (8.51%) had a significant effect on the springback behaviour of the sheet. As the punch radius increased, the springback values increased. At the highest parameter level, where the bending angle was 120°, the springback values decreased. The highest springback occurred at 90° bending angle..

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“…Nevertheless, the most important problem when high tensile strength steel plate is used is dimensional accuracy, and the focus in process technology research is on ways to improve shape accuracy [5][6][7][8][9][10][11][12][13] . The basic approach is to give the die a shape that differs from the actual part shape so that the part has the speci ed shape (dimensions) after spring-back, a technique called anticipation .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Form-Forming Mechanism for High-Tensile-Strength Steel Plate

2017

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Steel plate with tensile strengths of from 440 MPa to 980 MPa is increasingly being adopted for the structural elements of automobile bodies to both reduce weight and increase collision safety. However, the use of such material brings defects in press forming and other problems. The research reported here focuses on the form-forming method, which is effective for forming high tensile strength steel plate. To clarify the features of form-forming, we used eight types of steel plate having tensile strengths of from 270 MPa to 980 MPa in three forming processes, draw-forming, one-step form-forming, and two-step form-forming, to evaluate the shape freezing property. The results showed that the shape freezing property depends on the mechanical properties of the material; speci cally, a correlation with tensile strength, 0.2% proof stress, and elongation was seen. The effectiveness of form-forming for materials of higher strength was con rmed. Improved shape freezing by dividing the form-forming process into two steps was also con rmed. For draw-forming, the entire shaped surface was affected by unbending, so form-forming effectively suppresses unbending. The spatial distribution of unbending was evaluated quantitatively by measuring the residual stress distribution, con rming that residual stress serves as a useful index for clarifying the forming mechanism.

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Springback Analysis of High Strength Dual-phase Steels

Cited by 13 publications

References 5 publications

Influence of Thickness On The Forming Limit Curve On Low Carbon Steel With Thickness of 0.7 mm and 0.8 mm

Influence of Thickness On The Forming Limit Curve On Low Carbon Steel With Thickness of 0.7 mm and 0.8 mm

Springback Prediction Performance and Experimental Analysis in the V-bending Process of SCGADUB1180 Advanced High-Strength Steel

Evaluation of the Form-Forming Mechanism for High-Tensile-Strength Steel Plate

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