Investigation into cold extrusion of aluminum billets using three-dimensional finite element method

Chen, Dyi-Cheng; Syu, Sheng Kai; Wu, Cing Hong; Lin, Sin Kai

doi:10.1016/j.jmatprotec.2007.04.067

Cited by 26 publications

(14 citation statements)

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“…These aforementioned conventional manufacturing processes mainly cause the high amount of material loss for mass production. Conversely, the bulk forming processes like forging are generally preferred for material savings and much more important than this; the bulk forming processes improves the mechanical strength of the workpiece due to grain refinement and unbroken grain flow [5,10,13,14,18]. In addition to this, the forged parts are almost without holes and pores [4,11].…”

Section: Introductionmentioning

confidence: 99%

“…There are several researchers studied on the FEM method to simulate the gear forming [1]. Chen et al [10] used DEFORM-3D software to examine the separate influences of process parameters on the plastic deformation behavior of an aluminum billet extrusion. Behrens [4] investigated closeddie cold sizing process of a straight-toothed planetary gear in terms of the occurring elastic die deflection.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Helical Gear Forming of Az31 Magnesium Material

Ayer¹

2017

Adv. Sci. Technol. Res. J.

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The simulation of helical gear forming is investigated in this study. AZ31 type magnesium material was selected for workpiece material because of its high specific strength. The finite element method was used to simulate the closed die upsetting method for magnesium material of helical gear upsetting. Three dimensional finite element analyses were carried out to obtain the forming load, effective stress, effective strain and temperature change with DEFORM-3D software.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation of Helical Gear Forming of Az31 Magnesium Material

Ayer¹

2017

Adv. Sci. Technol. Res. J.

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“…Maity [3] also investigated the three-dimensional extrusion of square section from square billet with a polynomial-shaped curved die using the upper bound method and compared it with the experimental results. Chen and Ling [4,5] proposed a velocity field for axisymmetric extrusions through cosine, elliptic, and hyperbolic dies. Many of the studies have been performed to investigate the effect of the die profile on the deformation load and the product quality.…”

Section: Introductionmentioning

confidence: 99%

Extrusion load prediction of gear-like profile for different die geometries using ANN and FEM with experimental verification

Bingöl

Ayer

Altinbalik

2014

Int J Adv Manuf Technol

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This paper deals with the extrusion of gear-like profiles and uses of finite element method (FEM) and artificial neural network (ANN) to predict the extrusion load. In the study, gear-like components has been manufactured by forward extrusion for the AA1070 aluminum alloy and the process was simulated by using a DEFORM-3D software package to establish a database in order to provide the data for ANN modeling. Serious experiments were performed for only one die set and four teeth gear profile to obtain data for comparing with DEFORM-3D results. After verifying a highly appropriate FEM simulation with the experiment at the same conditions, Results were enhanced for different die lengths, extrusion ratios, and two extra teeth number as three and six using FEM simulations. Subsequently, the data from the performed FEM simulations were submitted for the best obtained ANN model. Finally, a good agreement between FEsimulated and ANN-predicted results was obtained. The proposed ANN model is found to be useful in predicting the forming load of the different die set variations based on the reliable test data.

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“…They final optimal die design allowed a uniform flow velocity distribution and a decreasing of the peak value in the load-stroke curve of up to 45%. A sensitivity analysis of the input variables on a number of selected output parameters (as the damage distribution and the flow velocity) was carried out by Chen et al (2007) for a cold extrusion of aluminium billets by means of a rigid-plastic FE code, verifying the suitability of the code for modelling this type of problems. For accurate process assessment, specific models for die lifetime prediction should be available.…”

Section: Introductionmentioning

confidence: 99%