Statistical analysis of finite element modeling in sheet metal forming and springback analysis

Asgari, Sirous; Pereira, Michael; Rolfe, Bernard; Dingle, Matthew; Hodgson, Peter

doi:10.1016/j.jmatprotec.2007.09.073

Cited by 54 publications

(27 citation statements)

References 10 publications

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“…The effect of material thickness on bending processes was reported in previous studies [7]. Studies are also increasing on the spring-back and -go amounts in V bending processes [8][9][10][11]. It is also known that there are significant improvements decreasing the amount of spring-back.…”

Section: Introductionmentioning

confidence: 71%

Microstructural Characterization and Deformation of X10CrAlSi24 Sheet Material Applied V-Bending Process

Özdemir

Gökmeşe

2018

Teh. vjesn.

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This study used X10CrAlSi24 (1.4762) sheet material, which is widespread in bending processes of the energy sector. During bending of X10CrAlSi24 (1.4762) sheet materials, cracking and tearing occur due to these materials' brittleness at room temperatures. To avoid this phenomenon, bending was carried out by applying normalization treatments at 800 ºC, 850 ºC, 900 ºC and 950 ºC. V-bending processes were performed at three different bending angles (30º, 60º, 90º) and by a 4.5 mm punch tip radius. V-bending processes were carried out without leaving the punch on the material, and crushing of the punch on the sheet material sectional area was allowed. As a result of the bending processes, spring-go occurred in the 30º and 60º bending applications, whereas spring-back occurred in the 90º bending applications. The formation mechanism of capillary cracks (depending on deformation) due to internal stress especially at low temperatures was introduced by the microstructural characterization of the specimens.

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Section: Introductionmentioning

confidence: 71%

Microstructural Characterization and Deformation of X10CrAlSi24 Sheet Material Applied V-Bending Process

Özdemir

Gökmeşe

2018

Teh. vjesn.

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“…Hence, the sheet metal forming of stamping elements using liquid requires a special procedure for designing the manufacturing process of the items and that has been proposed by the author. This procedure is based on many years of experience in the assessment of drawability evaluation methods and modeling of manufacturing processes [1][2][3][4][5]. The basis of numerical modelling are experience and good FEM simulation practice acoording to [15,16] and especially for Inconel superalloys [17][18][19][20][21].…”

Section: Nickel Superalloysmentioning

confidence: 99%

“…The process of forming liquid is currently the only alternative method for obtaining complex shapes, coatings, and especially if we do it with high-strength materials. In the case of nickel superalloys the search for efficient methods to manufacture of the shaped shell is one of the most considerable problems in aircraft industry [1][2][3][4][5]. However, the automotive industries have the same problem with so-called advanced high-strength steels (AHSS).…”

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confidence: 99%

Research on Liquid Forming Process of Nickel Superalloys Thin Sheet Metals

Hyrcza-Michalska¹

2017

Archives of Metallurgy and Materials

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The paper presents the study of drawability of thin sheet metals made of a nickel superalloy Inconel type. The manufacturing process of axisymmetric cup -cone and a closed section profile in the form of a circular tube were designed and analyzed. In both cases, working fluid-oil was used in place of the rigid tools. The process of forming liquid is currently the only alternative method for obtaining complex shapes, coatings, and especially if we do it with high-strength materials. In the case of nickel superalloys the search for efficient methods to manufacture of the shaped shell is one of the most considerable problems in aircraft industry [1][2][3][4][5]. However, the automotive industries have the same problem with so-called advanced high-strength steels (AHSS). Due to this, both industrial problems have been examined and the emphasis have been put on the process of liquid forming (hydroforming). The study includes physical tests and the corresponding numerical simulations performed, using the software Eta/Dynaform 5.9. Numerical analysis of the qualitative and quantitative forecasting enables the formability of materials with complex and unusual characteristics of the mechanical properties and forming technology. It has been found that only the computer aided design based on physical and numerical modeling, makes efficient plastic processing possible using a method of hydroforming. Drawability evaluation based on the determination of the mechanical properties of complex characteristics is an indispensable element of this design in the best practice of industrial manufacturing products made of thin sheet metals.

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“…This involved the stamping of a large cross member with samples taken from various locations where the strain was either known experimentally or predicted using a validated finite element model. [10] These formed components have complex shapes, and hence, it is not generally possible to determine other properties such as fatigue or crash behavior by taking the samples out of the formed component. Rather, the general approach is to apply an equivalent strain through another method, such as using a larger tensile sample and then after a prescribed deformation, cutting out smaller samples for testing, or using other deformation modes such as rolling.…”

Section: The Formation Of Complex Microstructures After Different Defmentioning

confidence: 99%

The Formation of Complex Microstructures After Different Deformation Modes in Advanced High-Strength Steels

Timokhina

Pereloma

Hodgson

2014

Metall Mater Trans A

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The microstructure of transformation induced plasticity (TRIP) and dual phase (DP) multiphase steels after stamping of an industrial component at different strain levels was investigated using transmission electron microscopy. The TRIP steel microstructure showed a more complex dislocation substructure of ferrite at different strain levels than DP steel. The deformation microstructure of the stamped parts was compared to the deformation microstructure in these complex steels for different "equivalent" tensile strains. It was found that the microstructures are similar only at high levels of strain (>10 pct) for both steels. The microstructure of transformation induced plasticity (TRIP) and dual phase (DP) multiphase steels after stamping of an industrial component at different strain levels was investigated using transmission electron microscopy. The TRIP steel microstructure showed a more complex dislocation substructure of ferrite at different strain levels than DP steel. The deformation microstructure of the stamped parts was compared to the deformation microstructure in these complex steels for different ''equivalent'' tensile strains. It was found that the microstructures are similar only at high levels of strain (>10 pct) for both steels.

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Statistical analysis of finite element modeling in sheet metal forming and springback analysis

Cited by 54 publications

References 10 publications

Microstructural Characterization and Deformation of X10CrAlSi24 Sheet Material Applied V-Bending Process

Microstructural Characterization and Deformation of X10CrAlSi24 Sheet Material Applied V-Bending Process

Research on Liquid Forming Process of Nickel Superalloys Thin Sheet Metals

The Formation of Complex Microstructures After Different Deformation Modes in Advanced High-Strength Steels

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