Reference: A.P. Roberts and E.J. Garboczi, J. Amer. Ceram. Soc., 83,
No. 12, pp. 3041-3048, (2000).
(PDF Version
of Original paper)
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Next: Introduction
Elastic properties of model porous ceramics
Anthony P. Roberts
and
Edward J. Garboczi*
Centre for Microscopy and Microanalysis,
University of Queensland, St. Lucia, Queensland 4066,
Australia
*Building Materials Division,
National Institute of Standards and Technology,
Gaithersburg, MD 20899, USA
Jan. 6, 2000
Abstract:
The finite element method (FEM) is used to study the influence
of porosity and pore shape on the elastic properties of
model porous ceramics.
The Young's modulus of each model was found to be
practically independent of the solid Poisson's ratio. At a
sufficiently high porosity,
the Poisson's ratio of the porous models converged to a fixed value
independent of the solid Poisson's ratio. The Young's modulus of
the models is in good agreement with experimental data. We provide
simple formulae which 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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