Elasticity and strength of partially sintered ceramics

Liu, Xiaoxing, Matin, Christophe, Delette, Gerard and Bouvard, Didier (2010) Elasticity and strength of partially sintered ceramics. Journal of the Mechanics and Physics of Solids, 58 6: 829-842.


Author Liu, Xiaoxing
Matin, Christophe
Delette, Gerard
Bouvard, Didier
Title Elasticity and strength of partially sintered ceramics
Journal name Journal of the Mechanics and Physics of Solids  (ERA 2012 Listed)    (ERA 2010 Rank A*)   Check publisher's open access policy
Publication date 2010-06
Sub-type Article
DOI 10.1016/j.jmps.2010.04.007
Volume number 58
Issue number 6
ISSN 0022-5096; 1873-4782
Start page 829
End page 842
Total pages 14
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract A discrete element model for the elastic and fracture behavior of partially sintered ceramics is presented. It accounts for the granular character of the material when a large amount of porosity (typically >0.2–0.4) is left after sintering. The model uses elastic force-displacement laws to represent the bond formed between particles during sintering. Bond fracture in tension and shearing is accounted for in the model. Realistic numerical microstructures are generated using a sintering model on random particle packings. In particular, packings with fugitive pore formers are used to create partially sintered microstructures with large pores. The effective elastic response and the strength of these microstructures are calculated in tension and compression. The link between important microstructural features such as bond size or coordination number and macroscopic behavior is investigated. In particular, it is shown that porosity alone is not sufficient to account for the mechanical properties of a partially sintered material.
Keyword Ceramic material
Porous material
Porous material
Discrete elements
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article
Collections: ERA 2012 Admin Only
Earth Systems Science Computational Centre Publications
 
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Created: Fri, 14 Oct 2011, 08:27:25 EST by Xiaoxing Liu on behalf of Earth Systems Science Computational Centre