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RESEARCH PAPERS

Blank Development and Tooling Design for Drawn Parts Using a Modified Slip Line Field Based Approach

[+] Author and Article Information
M. Karima

Ontario Centre for Advanced Manufacturing, 400 Collier MacMillan Drive, Cambridge, Ontario N1R 7H7 Canada

J. Eng. Ind 111(4), 345-350 (Nov 01, 1989) (6 pages) doi:10.1115/1.3188770 History: Received December 01, 1988; Online July 30, 2009

Abstract

Box shaped parts demonstrate unusual characteristics as opposed to the drawn cylindrical cups. A novel approach for blank development, based on the modified plane strain slip line field (SLF), is presented in this work. The approach is to balance the element volume between the final position in the wall and the starting position in the flat flange. The end result of this SLF based unfolding technique is a set of elements representing the deformation path of the part. By post-processing the information on the nodal coordinates and invoking the variational principle in its incremental form, the strain distribution in the flange and the wall stresses are determined. A methodology is also presented for understanding the implications of the metal flow lines for tooling design.

Copyright © 1989 by ASME
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