Creep of power-law material containing spherical voids

P. Sofronis, R. M. McMeeking

Research output: Contribution to journalConference articlepeer-review


Finite element calculations have been carried out for spherical unit cells containing a concentric spherical hole to characterize the power low creep of a material containing voids. Axisymmetric states of macroscopic stress were applied to the unit cells ranging from purely hydrostatic loading to purely deviatoric stressing. The results of the unit cell calculations are approximated well by a creep potential for the macroscopic behavior of a porous material. This potential agrees with the unit cell results for purely hydrostatic stress and purely deviatoric stress and involves a simple elliptical interpolation in between. The model predicts quite well the ratio of transverse to axial strain rate in uniaxial compression tests.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalAmerican Society of Mechanical Engineers (Paper)
StatePublished - 1991
Externally publishedYes
EventASME Winter Annual Meeting - Atlanta, GA, USA
Duration: Dec 1 1991Dec 6 1991

ASJC Scopus subject areas

  • Mechanical Engineering


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