An upper bound analysis for hollow disk forging is presented. Flow is described by a kinematically admissible velocity field which accounts for bulging of the inner and outer surfaces. The friction stress is assumed to be constant across the entire platen-hollow disk interface. Analytical predictions include the relative neutral radius, a bulge parameter and the relative average pressure all in terms of friction and hollow disk geometry. An improvement is observed over previous parallel velocity field solutions.
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Limit Analysis of Hollow Disk Forging—Part 1: Upper Bound
Lehigh University, Bethlehem, Pa.
Metals and Minerals Research, Gulf & Western Natural Resources Group, Palmerton, Pa.
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Avitzur, B., and Sauerwine, F. (August 1, 1978). "Limit Analysis of Hollow Disk Forging—Part 1: Upper Bound." ASME. J. Eng. Ind. August 1978; 100(3): 340–344. https://doi.org/10.1115/1.3439437
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