Die compaction of copper powder designed for material parameter identification

W. Bier, M. P. Dariel, N. Frage, S. Hartmann, O. Michailov

Research output: Contribution to journalArticlepeer-review

41 Scopus citations


This article presents uniaxial compaction experiments of a fine copper powder in a cylindrical die. The compaction process consists of monotonic loading and of loading paths with inserted unloading and reloading cycles. An experimental setup that has been developed for determining the axial and radial stresses during the compaction is described and the calibration of the new device using highly accurate p-finite element simulations of the dies response to internal pressure is shown. The experimental results were subsequently used for the identification of the material parameters of a constitutive model for granular materials recently proposed by Bier and Hartmann [A finite strain constitutive model for metal powder compaction using a unique and convex single surface yield function. accepted for publication by European Journal of Mechanics, Series A/Solids 2006.]. The identification of the elasticity parameters was treated with special attention.

Original languageEnglish
Pages (from-to)766-777
Number of pages12
JournalInternational Journal of Mechanical Sciences
Issue number6
StatePublished - 1 Jun 2007


  • Die compaction
  • Elastoplasticity
  • Material parameter identification
  • Metal powder

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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