Finite element analysis of steady-state three-dimensional extrusion of sections through curved dies

Yang, Dong‐Yol; Cm, Lee; Yoon, Jonghun

doi:10.1016/0020-7403(89)90075-1

Cited by 48 publications

(10 citation statements)

References 13 publications

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“…This is also supported by the decrease in contact pressure occurred at the taper die surface in the deformation zone as well. In the end, these results contribute to the reduction in extrusion force in order to extinguish the formation of defect of the deformed product [8]. …”

Section: Effect Of Extrusion Ratio On Plasticity Materials Flowmentioning

confidence: 96%

Effect of extrusion ratio on paraffinic mineral oil lubricant in cold forward extrusion

Hafis

Ridzuan

Helmi

et al. 2012

AIP Conference Proceedings

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A finite element (FE) analysis is made for steady-state two-dimensional forward extrusion with three different extrusion ratio values. Predicting extrusion force of aluminum billet extruded with palm oil lubricant will definitely be helpful in deciding the right extrusion ratio. Hence, the finite element method was applied to investigate the influence of extrusion ratio on palm oil lubricant. The extrusion ratios evaluated were 1.5, 2, and 3. The reference of the study was in accordance to the experiment results of 0.1 mg paraffinic mineral oil grade 95 (Pr95) with kinematic viscosity of 90.12 mm 2 /s at 40 °C for the extrusion ratio of 3. The result was found to be reliable once the FE model was validated by the established work. The extrusion force for each extrusion ratio was described and evaluated. The FE analysis also accounts for plasticity material flow and equivalent plastic strains in the deformation region. The analysis agreed that the extrusion ratio of 1.5 reduced the extrusion force compared to the extrusion ratio of 2 and 3. This was confirmed by the plotted equivalent plastic strain deformation which shows that the high value of equivalent plastic strain near the extrusion die surface was decreased. As a result, the extrusion force becomes greater with the increasing of extrusion ratio.

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Section: Effect Of Extrusion Ratio On Plasticity Materials Flowmentioning

confidence: 96%

Effect of extrusion ratio on paraffinic mineral oil lubricant in cold forward extrusion

Hafis

Ridzuan

Helmi

et al. 2012

AIP Conference Proceedings

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show abstract

“…Han and Yang [38] modeled the extrusion of trocoidal gears. Yang et al [39] also used finite element analysis to confirm the experimental and upper bound analysis of the clover sections. Non-axisymmetric three-dimensional extrusions have been studied further by using upper bound elemental technique [40] and spatial elementary rigid zones [41,42].…”

Section: Three-dimensional Non-axisymmetric Extrusion Analysismentioning

confidence: 98%

Overview of adaptable die design for extrusions

Gordon

Tyne

Moon

2007

Journal of Materials Processing Technology

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“…An initial velocity field can be generated by assuming the rolled metal to be a linear viscous material [3]. The velocity boundary conditions and the frictional boundary conditions on an arbitrarily curved surface are imposed via the successive application of a skew boundary condition [14,16].…”

Section: Rigid-plastic Finite Element Formulationmentioning

confidence: 99%

An investigation into deformation mechanisms in the rolling of complex sheets with internal defects

Chen

2007

Proceedings of the Institution of Mechanical Engineers, Part B:

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This study conducts a finite element analysis of the plastic deformation and bonding behaviour of complex aluminium-copper sheets containing internal defective voids in the asymmetrical cold rolling process. The influences of the roll diameter, the thickness ratio of the upper/lower sheet layers, the total sheet thickness at the entrance, and the sheet thickness reduction ratio on the dimensions of the internal void at the exit and the effective stress/strain distributions in the complex sheet are examined. Additionally, the evolution of closing of the correlation between the upper/lower voids under different rolling process parameters is explored. The present numerical results provide a valuable insight into the deformation mechanisms involved in the cold rolling of complex sheets with internal defects.

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Finite element analysis of steady-state three-dimensional extrusion of sections through curved dies

Cited by 48 publications

References 13 publications

Effect of extrusion ratio on paraffinic mineral oil lubricant in cold forward extrusion

Effect of extrusion ratio on paraffinic mineral oil lubricant in cold forward extrusion

Overview of adaptable die design for extrusions

An investigation into deformation mechanisms in the rolling of complex sheets with internal defects

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