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A Note on the Micromechanics of Plastic Yield of Porous Solids

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Abstract

Experimental evidence suggests that, for materials exhibiting no appreciable work hardening and containing no more than approximately 20% volume fraction of pores, the macroscopic strain at which yield occurs is nearly constant, with a tendency to increase slightly as porosity increases. The present work shows that both observations - approximate constancy of strain at yield and its tendency to increase with porosity - have a relatively simple micromechanical explanation.

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Authors and Affiliations

  1. Department of Mechanical Engineering, University of California, 6195 Etcheverry Hall, Berkeley, CA, 94720-1740, USA

    T.I. Zohdi

  2. Department of Mechanical Engineering, Tufts University, Medford, MA, 02153, USA

    M. Kachanov

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  1. T.I. Zohdi
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  2. M. Kachanov
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Zohdi, T., Kachanov, M. A Note on the Micromechanics of Plastic Yield of Porous Solids. Int J Fract 133, 31–35 (2005). https://doi.org/10.1007/s10704-005-7143-1

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  • DOI: https://doi.org/10.1007/s10704-005-7143-1

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