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Three-dimensional discrete element modeling of micromechanical bending tests of ceramic–polymer composite materials
Citation Link: https://doi.org/10.15480/882.1674
Publikationstyp
Journal Article
Date Issued
2013-07-20
Sprache
English
TORE-DOI
Journal
Volume
248
Start Page
77
End Page
83
Citation
Powder Technology (248): 77-83 (2013)
Publisher DOI
Scopus ID
Publisher
Elsevier
Ceramic–polymer composite materials are used throughout materials science, but theoretical models which take into account the microstructural design to predict their mechanical properties are still not fully developed. We present an approach to use the discrete element method to model the mechanical behavior under bending
load of dense composite materials made from ceramic particles which are bonded together by polymeric layers. Unlike many other modeling approaches, the internal particulate structure of the material, including the particle size distribution, packing structure, and pore structure can thus be considered. Linear-elastic bonds are created between all contacting particles to model the polymeric binder. A three-dimensional beam with a packing density of 63% is generated and its mechanical properties are tested in 3- and 4-point bending. The loading speed, loading scheme (position of the supports), and the mechanical properties of the polymeric bonds are varied and their effect on the modulus of elasticity of the material is investigated.
load of dense composite materials made from ceramic particles which are bonded together by polymeric layers. Unlike many other modeling approaches, the internal particulate structure of the material, including the particle size distribution, packing structure, and pore structure can thus be considered. Linear-elastic bonds are created between all contacting particles to model the polymeric binder. A three-dimensional beam with a packing density of 63% is generated and its mechanical properties are tested in 3- and 4-point bending. The loading speed, loading scheme (position of the supports), and the mechanical properties of the polymeric bonds are varied and their effect on the modulus of elasticity of the material is investigated.
Subjects
discrete element method
mechanical properties
mechanical tests
composite materials
packing density
DDC Class
620: Ingenieurwissenschaften
Funding(s)
Publication version
publishedVersion
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