About brittle fracture in the vicinity of filled pores

Abstract

Modeling of brittle fracture of a porous medium (body) under uniaxial compression was performed for the cases of pore filling by fluid or closely packed elastic disks. The second variant of the pore filling represents an example of discrete filling with fracture products often observed in experiments. The effects of pore filling were evaluated on the basis of an analytical description of the appropriate stress fields in the pore vicinities. The estimates showed that both fluid and elastic filling amplify the tendency of the porous medium to brittle fracture under compression.