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
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