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High pressure characterization and modelling of CaCO3 powder mix in the Bridgman anvil apparatus
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0002-4686-4010
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: 0000-0002-7514-0513
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Signaler och system.ORCID-id: 0000-0002-6216-6132
2012 (engelsk)Inngår i: High Pressure Research, ISSN 0895-7959, E-ISSN 1477-2299, Vol. 32, nr 4, s. 490-508Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

For investigating high pressure sintering processes, numerical models can be used. This will demand material models which give realistic mechanical response throughout the whole parameter space of the actual process. As the pressures become higher, the material density approaches its full theoretical value and the elastic part of the material properties becomes increasingly important. In this investigation, Poisson's ratio was determined using ultrasonic pulse-echo measurements. A new elastic model and an improved plasticity model were implemented into a user-defined material subroutine in a finite element (FE) code. To experimentally investigate the load displacement response and pressure distribution in powder compacts during pressing, a pressure instrumented Bridgman anvil apparatus was used. Validation of the FE model was conducted against experimental data from pressing experiments using two different start densities. The results show that the simulation model is indeed capable of reproducing load–thickness curves and pressure profiles reasonable close to the experimental curves.

sted, utgiver, år, opplag, sider
2012. Vol. 32, nr 4, s. 490-508
HSV kategori
Forskningsprogram
Hållfasthetslära; Industriell elektronik
Identifikatorer
URN: urn:nbn:se:ltu:diva-13055DOI: 10.1080/08957959.2012.736505ISI: 000312339500006Scopus ID: 2-s2.0-84871203194Lokal ID: c36c2608-2f4a-41a4-b204-359aa55962c8OAI: oai:DiVA.org:ltu-13055DiVA, id: diva2:986006
Merknad
Validerad; 2012; 20121030 (andbra)Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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Berg, SvenJonsén, PärHäggblad, Hans-ÅkeCarlson, Johan E.
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