Earing profile and wall thickness prediction of a cylindrical cup for dual-phase steels using different yield criteria in FE simulation

Amaral, Rui; Santos, Abel D.; Miranda, Sara S.; Sá, J. César de

doi:10.1063/1.5112749

Cited by 3 publications

(1 citation statement)

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“…Nevertheless, the cup wall thickness distribution was strongly influenced by the yield criteria, being clearly overestimated by the von Mises yield criterion. The same result was reached by Amaral [28] when studying the effect of anisotropic yield criteria (Hill 48, Barlat 91, and CPB06) during deep drawing of a cylindrical cup from advanced high-strength steels.…”

Section: Discussionsupporting

confidence: 66%

Experimental Assessment of Friction Coefficient in Deep Drawing and Its Verification by Numerical Simulation

et al. 2021

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The friction coefficient in the simulation of stamping processes should be defined. Modern simulation software allows its definition as constant or its dependence on pressure or temperature. It is also useful in stamping processes to define different values in different regions, as it often reflects the nature of deformation process. This article deals with the regression and analytical models commonly used to determine the friction coefficients in specified areas of the stamping process. Analytical models were verified by an experimental strip drawing test under the same contact conditions. Steel sheets for the automotive industry were used in experiments and simulations—extra deep drawing quality DC 05 and austenitic stainless steel AISI 304. Friction coefficients were also evaluated when the cup test was performed. A regression model of drawing to the blankholding force was applied to the results. Conformity of friction coefficients when measured by cup tests and strip tests was confirmed. The values of the friction coefficient reached from the experiment were applied in FEM simulation software.

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Section: Discussionsupporting

confidence: 66%