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Three-dimensional analysis of compaction of metal powder

Cedergren, Joakim LU ; Sørensen, NJ and Bergmark, A (2002) In Mechanics of Materials 34(1). p.43-59
Abstract
Three-dimensional compaction simulations of geometries with circular and quadratic cross-sections are reported using dilatant viscoplastic material models representing a ductile steel powder. The simulations are compared with experiments using in situ measurements of the wall-tractions within the die. Two different porous viscoplastic material models have been used: the combined Fleck-Kuhn-MeMeeking (FKM) and Gurson model and the Shima-Oyane model. The contact between the die and the powder was modelled with Coulomb-type friction. Effects such as the applied traction-density response and average relations for the upper, lower and the normal tractions against the die wall are compared. Comparisons between the numerical results and... (More)
Three-dimensional compaction simulations of geometries with circular and quadratic cross-sections are reported using dilatant viscoplastic material models representing a ductile steel powder. The simulations are compared with experiments using in situ measurements of the wall-tractions within the die. Two different porous viscoplastic material models have been used: the combined Fleck-Kuhn-MeMeeking (FKM) and Gurson model and the Shima-Oyane model. The contact between the die and the powder was modelled with Coulomb-type friction. Effects such as the applied traction-density response and average relations for the upper, lower and the normal tractions against the die wall are compared. Comparisons between the numerical results and experimental results show that both material models can well be used to capture the overall density distributions for the geometries studied and that many of the coarse three-dimensional features of the powder-pressing process are well described by the simulations. (C) 2002 Elsevier Science Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
experiments, finite element, 3D, viscoplasticity, porous material, powder compaction, friction
in
Mechanics of Materials
volume
34
issue
1
pages
43 - 59
publisher
Elsevier
external identifiers
  • wos:000173228400003
  • scopus:0036134098
ISSN
0167-6636
DOI
10.1016/S0167-6636(01)00090-4
language
English
LU publication?
yes
id
ad345285-14ea-453d-8e89-d2e27f240e72 (old id 345768)
date added to LUP
2007-08-13 14:59:24
date last changed
2017-06-25 03:28:36
@article{ad345285-14ea-453d-8e89-d2e27f240e72,
  abstract     = {Three-dimensional compaction simulations of geometries with circular and quadratic cross-sections are reported using dilatant viscoplastic material models representing a ductile steel powder. The simulations are compared with experiments using in situ measurements of the wall-tractions within the die. Two different porous viscoplastic material models have been used: the combined Fleck-Kuhn-MeMeeking (FKM) and Gurson model and the Shima-Oyane model. The contact between the die and the powder was modelled with Coulomb-type friction. Effects such as the applied traction-density response and average relations for the upper, lower and the normal tractions against the die wall are compared. Comparisons between the numerical results and experimental results show that both material models can well be used to capture the overall density distributions for the geometries studied and that many of the coarse three-dimensional features of the powder-pressing process are well described by the simulations. (C) 2002 Elsevier Science Ltd. All rights reserved.},
  author       = {Cedergren, Joakim and Sørensen, NJ and Bergmark, A},
  issn         = {0167-6636},
  keyword      = {experiments,finite element,3D,viscoplasticity,porous material,powder compaction,friction},
  language     = {eng},
  number       = {1},
  pages        = {43--59},
  publisher    = {Elsevier},
  series       = {Mechanics of Materials},
  title        = {Three-dimensional analysis of compaction of metal powder},
  url          = {http://dx.doi.org/10.1016/S0167-6636(01)00090-4},
  volume       = {34},
  year         = {2002},
}