Finite element modelling of crack propagation in metal powder compaction using Mohr-Coulomb and Elliptical Cap yield criteria

S. M. Tahir, Ahmad Kamal Ariffin Mohd Ihsan, M. S. Anuar

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In the modelling of the compaction process of particulate materials into a coherent green body, an appropriate yield criterion for the deformation process has to be selected. In this paper, two commonly used yield criteria for powder compaction, namely Mohr-Coulomb and Elliptical Cap are utilized in the finite element modelling of iron powder compaction process, which incorporates a fracture criterion of granular materials in compression. The simulated crack growth patterns obtained by using these two yield criteria were compared in terms of the influence of shear stress and relative density distributions. This work has shown that the application of the Elliptical Cap yield model gives a more realistic simulated Mode II crack propagation during the densification stage of the metal powder compaction process in comparison to the Mohr-Coulomb yield model.

Original languageEnglish
Pages (from-to)162-170
Number of pages9
JournalPowder Technology
Volume202
Issue number1-3
DOIs
Publication statusPublished - Aug 2010

Fingerprint

Powder metals
Crack propagation
Compaction
Iron powder
Granular materials
Densification
Powders
Shear stress

Keywords

  • Compaction
  • Crack propagation
  • Elliptical Cap
  • Finite element
  • Mohr-Coulomb
  • Shear crack

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Finite element modelling of crack propagation in metal powder compaction using Mohr-Coulomb and Elliptical Cap yield criteria. / Tahir, S. M.; Mohd Ihsan, Ahmad Kamal Ariffin; Anuar, M. S.

In: Powder Technology, Vol. 202, No. 1-3, 08.2010, p. 162-170.

Research output: Contribution to journalArticle

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