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Numerical Investigation of Friction Coefficient in Coining Processes of the Same Part in Different Grain Sizes (CROSBI ID 573807)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Keran, Zdenka ; Math, Miljenko ; Piljek, Petar Numerical Investigation of Friction Coefficient in Coining Processes of the Same Part in Different Grain Sizes // Proceedings of 13th International Scientific Conference on Production Engineering / Abele E., Udiljak T., Ciglar D. (ur.). Zagreb: Hrvatska udruga proizvodnog strojarstva (HUPS), 2011. str. 143-146

Podaci o odgovornosti

Keran, Zdenka ; Math, Miljenko ; Piljek, Petar

engleski

Numerical Investigation of Friction Coefficient in Coining Processes of the Same Part in Different Grain Sizes

The study concerns the analysis of significant contact friction changes by changing the size of crystal grains in the processes of free axisymmetric workpieces upsetting, initial height of 2 mm. The friction changes result with significant changes in forming force. This phenomenon usually characterizes microforming processes. Using hard experimental data in the creation of numerical FE (finite element) model, a dependence of the changes of contact friction in correlation to the change of the workpiece crystal grain size for three different grain sizes: 39, 47 and 76 μm is presented. It is shown that the friction factor is increased by reducing the size of crystal grains. Physical interpretation of the results is given by theory of Bowden and Tabor.

coining process ; numerical simulation ; friction coefficient

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Podaci o prilogu

143-146.

2011.

objavljeno

Podaci o matičnoj publikaciji

Proceedings of 13th International Scientific Conference on Production Engineering

Abele E., Udiljak T., Ciglar D.

Zagreb: Hrvatska udruga proizvodnog strojarstva (HUPS)

978-953-7689-01-8

Podaci o skupu

13th international scientific conference on production engineering

ostalo

16.06.2011-18.06.2011

Biograd na Moru, Hrvatska

Povezanost rada

Strojarstvo