Design Method of Die Geometry and Pass Schedule by Void Index in Multi-Pass Drawing

[+] Author and Article Information
Takashi Kuboki

Dept. of Mechanical Engineering & Intelligent Systems, University of Electro-Communications, 1-5-1 Chofu Gaoka, Chofu City, Tokyo, 182-8585, Japan

Masaaki Abe

Products Development Section, Products Technology Department, Sumitomo Metals Kokura, Ltd., 1 Konomi-machi, Kokurakita-ku Kitakyushu, 802-8686, Japan

Yutaka Neishi

Corporate R&D Laboratories, Sumitomo Metal Industries, Ltd., 1-8 Fuso-cho, Amagasaki, 660-0891, Japan

Masayoshi Akiyama

Corporate R&D Laboratories Sumitomo Metal Industries, Ltd., 1-8 Fuso-cho, Amagasaki, 660-0891, Japan

J. Manuf. Sci. Eng 127(1), 173-181 (Mar 21, 2005) (9 pages) doi:10.1115/1.1830490 History: Received December 03, 2002; Revised March 20, 2004; Online March 21, 2005
Copyright © 2005 by ASME
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Histories of integration of hydrostatic stress σeqm and equivalent strain εeq
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The geometry of a specimen for Archimedes’ method
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The suppression effect of low-angle die on void growth
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Images of voids observed by scanning electron microscopy (SEM)
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Influence of reduction in area on void growth
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Effect of coefficient of friction on the void index
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Comparison between criteria
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Influence of die angle θ on the void index J for multi-pass drawing
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Relationship between ln((d0/d1)2) and equivalent strain εeq1
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The influence of die angle θ on the maximum stress σz−max
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Photograph of a central burst
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Stress and strain distribution under standard conditions of die angle θ=14 deg and reduction in area Rd=17.4
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An example of mesh for analysis




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