Analysis of the Effect of Strain Hardening on Central Bursting Defects in Drawing and Extrusion

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Abstract
Central bursting defects in a strain-hardening material are analyzed. A criterion has been derived for the conditions that promote these defects, as a function of the coefficient of strain hardening, the percent reduction, the die semicone angle, and the coefficient of friction. The criterion was experimentally verified for homogeneous materials.

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