Numerical modelling of cold compaction of metal powder

Pia Redanz

    Research output: Contribution to journalJournal articleResearchpeer-review


    A finite element programme has been developed for the analysis of porosity and stress distributions in a powder compact, based on rate-independent finite strain plasticity theory. The strain hardening versions of the Gurson model (J. Engng. Mater. Technol., 1977, 99, 2-15), the more recent FKM model (J. Mech. Phys. Solids, 1992, 40(5), 1139-1162), developed by Fleck, Kuhr. and McMeeking, and a combination of the two models are used. The friction between the mould wall and the metal powder is modelled by a combination of Coulomb friction and a constant friction shear stress, since Coulomb friction is not realistic at high normal pressures. The finite element programme has been used to study the effects of friction, compaction method, and material parameters. Analyses for powder compacts of various geometries are presented to illustrate the method. (C) 1998 Elsevier Science Ltd. All rights reserved.
    Original languageEnglish
    JournalInternational Journal of Mechanical Sciences
    Issue number11
    Pages (from-to)1175-1189
    Publication statusPublished - 1998


    • Powder compaction
    • Porous material
    • Finite element


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