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RESEARCH PAPERS: Additional Technical Papers

A Semi-Empirical Solution to Upset Forging

[+] Author and Article Information
P. Dadras

Wright State University, Dayton, Ohio 45435

J. Eng. Ind 103(4), 478-483 (Nov 01, 1981) (6 pages) doi:10.1115/1.3184515 History: Received April 21, 1981; Online July 30, 2009

Abstract

A simple, semi-empirical approach for the determination of elastic zone, bulge profile, and load-displacement curve for the upsetting of cylindrical billets has been proposed. Stress distribution in the billet has been determined, and the effects of process and material parameters have been investigated. It has been shown that the size of the elastic zone is dependent on the ratio of the initial yield strength to the flow stress of the material (σy /σo ), becoming smaller as (σy /σo ) decreases. Also, a substantial growth of the elastic zone with friction is noticed.

Copyright © 1981 by ASME
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