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  • Häggblad, Hans-åke, et al. (author)
  • Modelling And Simulation The Cracking Of Green Metal Powder Body
  • 2016
  • In: Proceedings World PM2016 Congress. - : European Powder Metallurgy Association. - 9781899072484
  • Conference paper (peer-reviewed)abstract
    • During the ejection stage of the powder metallurgy (PM) pressing process the elastic behaviour is important. Especially, if the in the powder compact is unloaded in a non-beneficially manner crack formation can occur. Experiments show a non-linear and also stress dependent elastic behaviour of green bodies. Calibrated against experimental data, a fracture model controlling the stress versus crack-width relationship is used. The softening rate of the fracture model is obtained from the corresponding rate of the dissipated energy. The model is implemented with a smeared crack approach in a finite element code and tested in simulation of a diametral compression testing. Results from simulations correlates well with experimental results. The smeared crack method combined with a cohesive fracture model is an interesting tool for predicting fracture in powder compacts.
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Type of publication
conference paper (1)
Type of content
peer-reviewed (1)
Author/Editor
Jonsén, Pär (1)
Häggblad, Hans-Åke (1)
Oldenburg, Mats (1)
Gustafsson, Gustaf (1)
Golling, Stefan (1)
University
Luleå University of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Engineering and Technology (1)
Year
2016 (1)

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