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RESEARCH PAPERS

Cup Drawing from an Anisotropic Blank

[+] Author and Article Information
W. A. Mir, M. J. Hillier

Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, Canada

J. Eng. Ind 91(3), 766-771 (Aug 01, 1969) (6 pages) doi:10.1115/1.3591687 History: Received May 27, 1968

Abstract

Tests on aluminum, copper and brass blanks indicate that, provided proper hold-down methods are used, the limiting drawing ratio that can be obtained is almost independent of type of blank holder. A comparison of theoretical and experimental critical punch loads at failure shows that, for aluminum, good agreement can be obtained when drawing under all-round hydrostatic pressure. This method produces a reduction in die friction and a significant increase in limiting drawing ratio. There is an optimum hydrostatic pressure above which no advantage is to be obtained.

Copyright © 1969 by ASME
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