A spool of copper wire has drawn to a final diameter D = 1.75 (mm). The...

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A spool of copper wire has drawn to a final diameter D = 1.75 (mm). The draw die has an entrance angle a = 18º. The copper has a strength coefficient K = 300 MPa and a strain hardening coefficient n = 0.50. The power used to perform this operation at an exit velocity of 100 m/min is 643.3 W. If the frictional and redundant work together consist of 40% of the ideal work of the copper wire deformation, determine the smallest possible starting diameter D. (mm). A spool of copper wire has drawn to a final diameter D = 1.75 (mm). The draw die has an entrance angle a = 18º. The copper has a strength coefficient K = 300 MPa and a strain hardening coefficient n = 0.50. The power used to perform this operation at an exit velocity of 100 m/min is 643.3 W. If the frictional and redundant work together consist of 40% of the ideal work of the copper wire deformation, determine the smallest possible starting diameter D. (mm).

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given Do 25mm Dy 175mm u 0072 Stringth of coffecient ... View the full answer