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RESEARCH PAPERS

Plane Strain Forging—A Lower Upper Bound Approach

[+] Author and Article Information
V. Nagpal, W. R. Clough

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

J. Eng. Ind 97(1), 119-124 (Feb 01, 1975) (6 pages) doi:10.1115/1.3438523 History: Received November 09, 1973; Online July 15, 2010

Abstract

A general kinematically admissible velocity field applicable to forging of a rectangular strip of a incompressible material is presented. Generalized shape of any dead zone, if assumed, can be obtained in terms of process parameters from this velocity field. Two different upper bound solutions for average forging pressure are obtained from simple velocity fields which are special cases of proposed general velocity field. Numerical results of the solutions show improvement over previous upper bound solutions published in literature over a certain range of process parameters.

Copyright © 1975 by ASME
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