Keran, Zdenka and Math, Miljenko and Piljek, Petar (2012) FEM analysis of friction coefficient in open die coining process of different grain sizes. = FEM analysis of friction coefficient in open die coining process of different grain sizes. Journal for technology of plasticity, 37 (1). pp. 15-22. ISSN 0354-3870. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. . Točan broj autora: 3.
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Abstract
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.
| Item Type: | Article (["eprint_fieldopt_article_type_article" not defined]) |
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| Keywords (Croatian): | coining process, numerical simulation, friction coefficient |
| Subjects: | TECHNICAL SCIENCE > Mechanical Engineering |
| Divisions: | 1200 Department of Technology > 1220 Chair of Metal Forming |
| Indexed in Web of Science: | No |
| Indexed in Current Contents: | No |
| Date Deposited: | 09 Mar 2016 13:11 |
| Last Modified: | 09 Mar 2016 13:11 |
| URI: | http://repozitorij.fsb.hr/id/eprint/5227 |
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