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High pressure characterization and modelling of CaCO3 powder mix in the Bridgman anvil apparatus
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0002-4686-4010
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0003-0910-7990
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mechanics of Solid Materials.ORCID iD: 0000-0002-7514-0513
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-6216-6132
2012 (English)In: High Pressure Research, ISSN 0895-7959, E-ISSN 1477-2299, Vol. 32, no 4, p. 490-508Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
2012. Vol. 32, no 4, p. 490-508
National Category
Applied Mechanics Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Solid Mechanics; Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-13055DOI: 10.1080/08957959.2012.736505ISI: 000312339500006Scopus ID: 2-s2.0-84871203194Local ID: c36c2608-2f4a-41a4-b204-359aa55962c8OAI: oai:DiVA.org:ltu-13055DiVA, id: diva2:986006
Note
Validerad; 2012; 20121030 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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

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