Work input for unsaturated elastic porous media

William G. Gray, Bernhard A. Schrefler, Francesco Pesavento

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


The work input for unsaturated elastic porous media is investigated based on averaged conservation equations for phases, interfaces, and common curves. In this analysis, the interfaces between the air-water interfaces are allowed to move and the surface tension appears explicitly in the analysis. Expressions for the work of the solid alone and for the medium are obtained. Conditions under which the result obtained here for the medium reduces to a more traditional expression are indicated. In this analysis, a form of the solid phase stress tensor, recently derived within the framework of thermodynamically constrained averaging theory for phase and interface properties, is used.

Original languageEnglish (US)
Pages (from-to)752-765
Number of pages14
JournalJournal of the Mechanics and Physics of Solids
Issue number5
StatePublished - May 2010


  • Elasticity
  • Hill-Mandel condition
  • Work input

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Condensed Matter Physics


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