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RESEARCH PAPERS

General Kinematically Admissible Velocity Fields for Some Axisymmetric Metal Forming Problems

[+] Author and Article Information
V. Nagpal

School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

J. Eng. Ind 96(4), 1197-1201 (Nov 01, 1974) (5 pages) doi:10.1115/1.3438495 History: Received July 10, 1973; Online July 15, 2010

Abstract

An approach for selecting general kinematically admissible velocity fields for an incompressible material from assumed shape of streamlines is outlined. Velocity field and generalized boundaries of plastic zone are obtained for axisymmetric extrusion of a rod through arbitrarily shaped die. For special case of conical die, the velocity field reduces to that presented by Stepanskii and Avitzur. General velocity field and boundary of dead zone, if assumed, for the problem of axisymmetric forging of cylindrical work-pieces are obtained. Other problems which can be treated are briefly discussed.

Copyright © 1974 by ASME
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