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 (σyo), becoming smaller as (σyo) decreases. Also, a substantial growth of the elastic zone with friction is noticed.

This content is only available via PDF.
You do not currently have access to this content.