Extrusion Through Spherical Dies—An Upper Bound Analysis [ASME Journal of Manufacturing Science and Engineering, 124, pp. 92–97]

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W. A. Gordon,,

W. A. Gordon,

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C. J. Van Tyne, and,

C. J. Van Tyne, and

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S. Sriram

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J. Manuf. Sci. Eng. May 2004, 126(2): 412 (1 pages)

Published Online: July 8, 2004

Equation (26) should read

W ˙_{f} = π {R_{0}}^{2} σ_{0} v_{0} \frac{2 m}{\sqrt{3}} \int_{r_{0} / R_{0}}^{r_{f} / R_{0}} | Δ v_{3} | \sqrt{ρ^{2} {(\frac{\partial ψ}{\partial ρ})}^{2} + 1} ρ sin (ψ) d ρ

which causes the friction power losses to be slightly larger than presented in the paper.

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