Barrelling of aluminium solid cylinders during cold upsetting with differential frictional conditions at the faces

Malayappan, S.; Esakkimuthu, Ganapathy Sundaram

doi:10.1007/s00170-005-2503-6

Cited by 15 publications

(12 citation statements)

References 13 publications

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“…According to Malayappan and Esakkimuthu (2006), in case of lubricated preforms, i.e. low interfacial friction conditions, the radial flow of preform is homogeneous and uniform throughout and hence overall barreling is low, but in case of unlubricated (dry conditions) preforms, i.e.…”

Section: Introductionmentioning

confidence: 98%

Investigation of dynamic effects during cold upset-forging of sintered aluminium truncated conical preforms

Chandrasekhar

Singh

2011

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 98%

Investigation of dynamic effects during cold upset-forging of sintered aluminium truncated conical preforms

Chandrasekhar

Singh

2011

Journal of Materials Processing Technology

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“…In recent studies [10][11], barreling phenomenon was investigated experimentally at various friction and geometrical conditions. The radius of curvature of the barrel was expressed as a function of height reduction depending on the maximum and minimum radii of the billet which can only be obtained by measuring compressed cylinder.…”

Section: Introductionmentioning

confidence: 99%

Determination of Barreling of Aluminum Solid Cylinders During Cold Upsetting Using Genetic Algorithm

Kanca¹,

Eyerci̇oğlu

Günen³

et al. 2019

Matéria (Rio J.)

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This study presents Genetic Programming models for the formulation of barreling of aluminum solid cylinders during cold upsetting based on experimental results. The maximum and minimum radii of the barreled cylinders having different aspect ratio (d/h= 0.5, 1.0 and 2.0) were measured for various frictional conditions (m=0.1-0.4). The change in radii with respect to height reduction showed different trends before and after folding, therefore, the corresponding reduction ratios of folding were also determined by using incremental upsetting. Genetic programming models were prepared using the experimental results with the input variables of the aspect ratio, the friction coefficient, and the reduction in height. The minimum and maximum barreling radii were formulated as output taking the folding into consideration. The performance of proposed GP models are quite satisfactory (R 2 = 0.908-0.998).

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“…On this problem, the friction processes in metal forming are usually studied [1]. There are a number of works on semi-empirical methods of shape characteristics calculation for the upsetting process [2][3][4]. However, numerical methods are more versatile and consequently accurate.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional Finite Element Modelling of the Cylindrical Specimen Upsetting

Murashov

Власов

2018

MATEC Web Conf.

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Friction has a substantial influence on the metal forming at upsetting of cylindrical aluminum specimens. The finite element method is often used to investigate this problem. This paper aims to reveal possible numerical errors and obstacles related to the 3D finite element solution of the problem. The calculation results for the proposed numerical 3D-model are compared with the experimental data. The influence of friction is demonstrated and a good agreement on the tool displacement is obtained. The features of the numerical solution of the problem in the ANSYS finite element software are shown.

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Barrelling of aluminium solid cylinders during cold upsetting with differential frictional conditions at the faces

Cited by 15 publications

References 13 publications

Investigation of dynamic effects during cold upset-forging of sintered aluminium truncated conical preforms

Investigation of dynamic effects during cold upset-forging of sintered aluminium truncated conical preforms

Determination of Barreling of Aluminum Solid Cylinders During Cold Upsetting Using Genetic Algorithm

Three-dimensional Finite Element Modelling of the Cylindrical Specimen Upsetting

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