Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 83, Issue 12, Pages 3041-3048Publisher
WILEY
DOI: 10.1111/j.1151-2916.2000.tb01680.x
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The finite-element method (FEM) is used to study the influence of porosity and pore shape on the elastic properties of model porous ceramics. Young's modulus of each model is practically independent of the solid Poisson's ratio. At a sufficiently high porosity, Poisson's ratio of the porous models converges to a fixed value independent of the solid Poisson's ratio. Young's modulus of the models is in good agreement with experimental data. We provide simple formulas that can be used to predict the elastic properties of ceramics and allow the accurate interpretation of empirical property-porosity relations in terms of pore shape and structure.
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