Single-test determination of the friction coefficient and stress-strain curve for application in metal-forming analyses |
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| Authors: | A F Marcon E Bittencourt G J Creus |
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| Institution: | (1) Department of Mechanical Engineering, UDESC, Joinville, SC, Brasil;(2) Centro de Mecânica Aplicada e Computacional, Escola de Engenharia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil |
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| Abstract: | The compression test of a ring is customarily used to determine the friction coefficient in metal-forming problems. The aim of this paper is to describe a procedure to obtain, for metals in the large deformation range, the stress-strain curve and friction coefficient through the same test. The friction coefficient is evaluated by comparing curves obtained by a finite element code with the experimental curves. The stress-strain curve is obtained by inverting an analytical solution, calculated by a lower-upper-bound approach. Good results in terms of accuracy are obtained. |
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