Theoretically, the maximum reduction possible in a wire drawing operation, under the assumptions of a perfectly plastic metal, no friction, and no redundant work, is which one of the following:
A)zero
B)0.63
C)1.0
D)2.72

Question

Quizplus · Accepted Answer

The maximum reduction possible in a wire drawing operation, under the ideal conditions stated, is 0.63. This is based on the theoretical limit set by the von Mises criterion for plastic deformation, which suggests that the maximum true strain in a perfectly plastic material without work hardening, friction, or redundant work is ln(1/0.63) ≈ 0.63.

Theoretically, the Maximum Reduction Possible in a Wire Drawing Operation