Elastic Properties of Model Porous Ceramics |
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| Authors: | Anthony P. Roberts Edward J. Garboczi |
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| Affiliation: | Building Materials Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, and;Centre for Microscopy and Microanalysis, University of Queensland, St. Lucia, Queensland 4072, Australia |
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| 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. 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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| Keywords: | finite element analyses elastic materials/properties porous materials |
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