A Numerical Method for Computing Plane Plastic Slip-Line Fields

[+] Author and Article Information
B. I. Bachrach

Ford Motor Company, Dearborn, Mich.

S. K. Samanta

Samanta Metal Forming Corp., Taylor, Mich.

J. Appl. Mech 43(1), 97-101 (Mar 01, 1976) (5 pages) doi:10.1115/1.3423804 History: Received December 01, 1974; Revised October 01, 1975; Online July 12, 2010


A numerical method for slip-line field analysis of rigid perfectly plastic material is presented. The method formulates the analysis of metal forming operations as constrained optimization problems. As an example extrusion through curved dies with zero exit angle and nonzero entrance angle is solved using the proposed method. Slip-line fields, hodograph, and flow field are illustrated, and the mean extrusion pressure as a function of reduction ratio is computed.

Copyright © 1976 by ASME
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