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RESEARCH PAPERS

Effects of Punch Cross-Section on Deep-Drawability of Square Shell of Aluminum Sheet

[+] Author and Article Information
N. Kawai, T. Mori

Department of Mechanical Engineering, Nagoya University, Furocho, Chikusa-ku, Nagoya, Japan

H. Hayashi

TohoGas Co., Ltd., Sakurada-cho-19, Atsuta-ku, Nagoya, Japan

F. Kondoh

Nippondenso Co., Ltd., Showa-cho-1-1, Kariya-shi, Aichi-ken, Japan

J. Eng. Ind 109(4), 355-361 (Nov 01, 1987) (7 pages) doi:10.1115/1.3187139 History: Received July 10, 1987; Online July 30, 2009

Abstract

Effects of product shape and a planar-anisotropy on a square shell drawability were studied, using commercially pure aluminum sheet. Two phenomena were mainly considered to affect a forming limit: (a) the prevention of crack initiation at the corner of a punch by adjacent straight punch profile regions, (b) the metal flow in the flange region from the corner to the straight side, the “Strain Relief Effect,” which serves to decrease the deformation at the corner.

Copyright © 1987 by ASME
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