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  • Olsson, ErikKTH,Hållfasthetslära (Avd.) (author)

A numerical analysis of cold powder compaction based on micromechanical experiments

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • Elsevier BV,2013
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-134166
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-134166URI
  • https://doi.org/10.1016/j.powtec.2013.03.040DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20131120
  • The discrete element method (DEM) is used for predicting the compaction behavior of two types of spray dried cemented carbide granules. The material model of the granules is determined by micromechanical experiments. First, compression tests are performed on single granules giving information of the deformation behavior at relatively small deformations. For larger deformations, nanoindentation tests are performed to give further information of the constitutive behavior indicating a strong hardening behavior at high strains. The material model is implemented in an FE model of two particles in contact and the relation between contact force and indentation depth is exported to a DEM program. The DEM program is used to simulate presently performed uniaxial die compaction experiments where the geometry of the die is taken into account. Excellent agreement is found between the experiments and the numerical predictions in the range where results from DEM simulations are valid.

Subject headings and genre

  • Cemented carbides
  • Contact mechanics
  • Discrete element method
  • Granule strength measurements
  • Nanoindentation
  • Powder compaction

Added entries (persons, corporate bodies, meetings, titles ...)

  • Larsson, Per LennartKTH,Hållfasthetslära (Avd.)(Swepub:kth)u1us5bjv (author)
  • KTHHållfasthetslära (Avd.) (creator_code:org_t)

Related titles

  • In:Powder Technology: Elsevier BV243, s. 71-780032-59101873-328X

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