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Modelling And Simulation The Cracking Of Green Metal Powder Body
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-7514-0513
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0003-0910-7990
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-3907-0802
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0001-7074-8960
Vise andre og tillknytning
2016 (engelsk)Inngår i: Proceedings World PM2016 Congress: International Powder Metallurgy Congress & Exhibition 9-13 October 2016, Hamburg, Germany, European Powder Metallurgy Association , 2016Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

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.

sted, utgiver, år, opplag, sider
European Powder Metallurgy Association , 2016.
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URN: urn:nbn:se:ltu:diva-61125ISBN: 978-1-899072-48-4 (tryckt)OAI: oai:DiVA.org:ltu-61125DiVA, id: diva2:1057247
Konferanse
International Powder Metallurgy Congress & Exhibition, Hamburg, 9-13 October 2016
Tilgjengelig fra: 2016-12-16 Laget: 2016-12-16 Sist oppdatert: 2018-04-12bibliografisk kontrollert

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Häggblad, Hans-åkeJonsén, PärGustafsson, GustafOldenburg, MatsGolling, Stefan

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Totalt: 156 treff
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