Saturation-induce failure: Mechanics of a class of unstable processes

Giuseppe Buscarnera, C. Di Prisco

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper presents an analytical investigation on the stability of multiphase porous media subjected to changes in fluid pressures and/or saturation conditions. For this purpose, we revisit the concept of second-order work and explore its relation with the incremental energy input in partially saturated media. Our analytical results show that second-order work contributions do not involve only effective stresses and skeletal deformation, but also depend on the changes in fluid pressures and degree of saturation. This result provides a novel approach to address unstable processes in unsaturated porous media and enables a number of theories originally conceived only for fluid-saturated compounds to be extended for unsaturated media.

Original languageEnglish (US)
Title of host publicationPoromechanics V - Proceedings of the 5th Biot Conference on Poromechanics
Number of pages8
StatePublished - Nov 15 2013
Event5th Biot Conference on Poromechanics, BIOT 2013 - Vienna, Austria
Duration: Jul 10 2013Jul 12 2013


Other5th Biot Conference on Poromechanics, BIOT 2013

ASJC Scopus subject areas

  • Mechanics of Materials


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