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Abstract
Inhomogeneous plastic deformation that develops during wire-drawing, and its impact on the drawing force, are investigated with a computational method. The effects of critical parameters, including die angle, area reduction, friction coefficient, and material hardening are sorted out, and the accuracy of certain simple formulas presented in the literature is assessed. The results suggest that the redundant strains (strains beyond those necessary for area reduction) are dependent principally on the die angle and area reduction; the interfacial friction and the strain hardening tend to have little influence on the strains. In addition, the impact of spatial inhomogeneity in hardness induced by strain hardening from prior passes is investigated.
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