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IssuesArchive of Issues2020-4pp.552-560

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V.V. Mokryakov and N.M. Osipenko, "Modeling of Ordered Fracture of a Two-Scale Porous Medium During Compression," Mech. Solids. 55 (4), 552-560 (2020)
Year 2020 Volume 55 Number 4 Pages 552-560
DOI 10.3103/S002565442004010X
Title Modeling of Ordered Fracture of a Two-Scale Porous Medium During Compression
Author(s) V.V. Mokryakov (Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, Moscow, 119526 Russia)
N.M. Osipenko (Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, Moscow, 119526 Russia, osipnm@mail.ru)
Abstract The article contains an analysis of the kinetics of brittle fracture processes during compression of a two-scale porous medium, in which a larger scale is associated with a system of holes. This work is a continuation of studies of fracture structures during compression. Within the framework of the project, experiments were carried out on samples of porous brittle model material (gypsum) containing a number of holes of different orientations with respect to the compression axis. They showed that fracture in the vicinity of holes in such materials under compression can develop both by initiating normal fracture cracks and by localizing compaction. In a model situation with a system of holes, the choice of the mechanism for the formation of local foci of destruction depends on the orientation of the system of holes relative to the compression axis. To interpret the experimental results, the stress state of the loaded system was calculated. A brief overview of the effects of local compaction under compression is given.
Keywords structure, destruction, porosity, compaction
Received 10 February 2020Revised 25 March 2020Accepted 10 April 2020
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