Constitutive Data for Powder Compaction Modeling

[+] Author and Article Information
I. C. Sinka, A. C. F. Cocks

Department of Engineering, University of Leicester, University Road, Leicester, LE1 7 RH, United Kingdom

J. H. Tweed

AEA Technology Plc., 552 Harwell, Didcot, OX11 0RA, United Kingdome-mail: james.tweed@aeat.co.uk

J. Eng. Mater. Technol 123(2), 176-183 (Sep 19, 2000) (8 pages) doi:10.1115/1.1339003 History: Received September 02, 1999; Revised September 19, 2000
Copyright © 2001 by ASME
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Grahic Jump Location
Cross section of 700 MPa capacity triaxial cell illustrating powder specimen, internal load cell, and radial displacement measurement cantilever device
Grahic Jump Location
Isodensity contours in p−σe space, labels indicate absolute specimen density. Abbreviations: HC - isostatic (hydrostatic) compaction, CD - simulated closed die compaction, SR - constant stress ratio test, followed by a figure which indicates the prescribed radial to axial stress ratio.
Grahic Jump Location
Contours of constant work done in p−σe stress space. The labels to the curves indicate the work done per unit (current) volume in MJ/m3.
Grahic Jump Location
Contours of constant complementary work done in Kirchoff stress space (Jp−Jσe). The labels to the curves indicate the work done per unit (initial) volume in MJ/m3.
Grahic Jump Location
Selected contours of constant work, indicating directions of the strain increment vector (left column), and selected contours of constant complementary work, indicating directions of the total strain vector (right column), for a ceramic, a hard metal and a steel powder.




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