Computer aided development of a bending–drawing test for thin metallic sheets

Ferran, G.; Moura, A.C de; Moreira, Luciano Pessanha

doi:10.1016/s0924-0136(98)00157-5

Cited by 5 publications

(5 citation statements)

References 6 publications

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“…After definition of input conditions e.g. process type (drawing), number of objects, objects type, import geometry, temperature, mesh, material type, boundary conditions, movement (hydraulic press), contact (Coulomb coefficient of friction 0.2) and simulation controls a database of information necessary for initiation of drawing process simulation was generated [10]- [12]. Numeric simulation verified the correctness of design of technological conditions concerning drawing process and the correctness of drawing tool construction.…”

Section: Computer Simulation Of Materials Plastic Flow In Drawing Toolmentioning

confidence: 99%

The Design of Drawing Process of Cylindrical Cup with Oval Bottom Using Computer Simulation

Kapustova

Sobota

2017

MATEC Web Conf.

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Abstract. Based on technological calculations, technology of one-operation drawing without blankholder was designed for production of a large-dimensional drawpiece with shape of welded on concave bottom. The necessary drawing force was also defined by calculation as maximum drawing force for trimming of drawpiece bottom. This contribution points out to the importance of FEM simulation of drawing process in order to verify the design of production technology of drawpiece with shape of welded on concave bottom on the basis of technological calculations. Simulation programme Deform verified the construction design of drawing tool determined for drawpiece production by first draw, and also determined the drawing force actually consumed during plastic deformation of drawpiece shape. Used simulation software confirmed correctness of drawing tool construction, as correct material plastic flow in drawing tool was monitored and production of drawpiece was faultless.

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Section: Computer Simulation Of Materials Plastic Flow In Drawing Toolmentioning

confidence: 99%

The Design of Drawing Process of Cylindrical Cup with Oval Bottom Using Computer Simulation

Kapustova

Sobota

2017

MATEC Web Conf.

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“…The corresponding angular evolutions present either stationary values at 0 0 and 90 0 for maximum and minimum near to α = 30 0 . Figure 3 outlines the drawing-bending test of thin rectangular strips test proposed by Ferran et al [2]. The strip is first bent over by the central and lateral beads by a controlled holding load and then is pulled only once throughout the bead radii by a drawing load.…”

Section: Uniaxial Tensile Testingmentioning

confidence: 99%

“…In this work, the plastic anisotropic behavior of an Interstitial Free (IF) steel sheet is first characterized by means of the uniaxial tensile test so as to evaluate the in-plane dependence of the yield stress and the R-value. Then, nearly cyclic bending loadings were imposed to narrow rectangular strips with the bending-drawing device proposed by Ferran et al [2]. In both tests, the specimens were taken at angular orientations α = 0, 15, 30, 45, 60, 75 and 90 0 from the RD.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Bending and Stationary Drawing Deformation of Metal Sheets : Experiments and Associated Numerical Simulations

Moreira¹,

Romão²,

Ferron³

et al. 2005

AIP Conference Proceedings

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A simple bend-draw experimental device is employed to analyze the behavior of narrow strips submitted to a nearly cyclic bending deformation mode followed by a steady state drawing. In this bending-drawing experiment, the strip is firstly bent over a central bead and two lateral beads by applying a controlled holding load and then is pulled out of device throughout the bead radii by a drawing load. The apparatus is mounted in a standard tensile test machine where the holding and drawing loads are recorded with an acquisition data system. The specimen is a rectangular strip cut with 320 mm long and 7 mm wide. The longitudinal (l) and width (w) strip plastic strains are determined from two hardness marks 120 mm spaced whereas the corresponding thickness (t) strain is obtained by volume conservation. Previous experiments showed a correlation between the plastic strain (ε w /ε t ) BD resulting from the bending-drawing and the Lankford R-values obtained from the uniaxial tensile test. However, previous 3D numerical simulations based upon Hill's quadratic and Ferron's yield criteria revealed a better correlation between the (ε w /ε t ) BD and the stress ratio σ PS /σ (α) , where σ PS stands for the plane-strain tension yield stress and σ (α) for the uniaxial yield stress in uniaxial tension along the drawing direction making an angle α with the rolling direction [1] . In the present work, the behavior of an IF steel sheet is firstly evaluated by means of uniaxial tensile and drawing-bending experiments conducted at every 15 degrees with respect to the rolling direction. Afterwards, the bending-drawing experiment is investigated with the commercial finite element (FE) code ABAQUS/Standard in an attempt to assess the influence of cyclic loadings upon the bendingdrawing strain-ratios.

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“…11. Sketch of the bending-drawing experiment proposed by Ferran et al [14]. [13] showed that the normalised angular variations of the radial velocity of the rim v r (α) and of yield stress σ(α) are both linked to the parameter Γ (α) by:…”

Section: Cup-drawingmentioning

confidence: 99%

“…The experimental data of the bending-drawing device proposed by Ferran et al [14] are compared in this section to the numerical results obtained with Abaqus/Explicit (VU-MAT). Fig.…”

Section: Bending-drawingmentioning

confidence: 99%