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Effective elastic moduli of porous solids

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Abstract

The principles of continuum mechanics can be extended to porous solids only if the effective moduli are known. Although the effective bulk modulus has already been determined by approximating the geometry of a porous solid to be a hollow sphere, bounds could only be established for the other moduli. This problem of indeterminacy of the moduli is solved in this study using a particular model from the variation of the effective Poisson's ratio. In addition to this, the results are extended for the hollow sphere to real geometry by introducing a porositydependent factor. These results are compared with experimental data and the agreement is found to be good. As the effective Poisson's ratio cannot be determined accurately using experiments, the derived equation is verified using finite element analysis.

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Authors and Affiliations

  1. Defence Metallurgical Research Laboratory, 500 258, Hyderabad, India

    N. Ramakrishnan

  2. Ministry of Defence, South Block, 110 011, New Delhi, India

    V. S. Arunachalam

Authors
  1. N. Ramakrishnan
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  2. V. S. Arunachalam
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Ramakrishnan, N., Arunachalam, V.S. Effective elastic moduli of porous solids. J Mater Sci 25, 3930–3937 (1990). https://doi.org/10.1007/BF00582462

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  • DOI: https://doi.org/10.1007/BF00582462

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