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Comparison of bonded-particle numerical model results with indirect tension experimental results for Dionysos marble

Kaklis Konstantinos, Νομικός Παύλος, Karatza Zeynep, Agioutantis Zacharias

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URIhttp://purl.tuc.gr/dl/dias/BC322776-00DF-4083-9341-52F1F94E288E-
Identifierhttps://www.onepetro.org/conference-paper/ARMA-2019-1788-
Languageen-
Extent6 pagesen
TitleComparison of bonded-particle numerical model results with indirect tension experimental results for Dionysos marble en
CreatorKaklis Konstantinosen
CreatorΚακλης Κωνσταντινοςel
CreatorΝομικός Παύλοςel
CreatorNomikos Pavlosen
CreatorKaratza Zeynepen
CreatorAgioutantis Zachariasen
CreatorΑγιουταντης Ζαχαριαςel
PublisherAmerican Rock Mechanics Association en
Content SummaryIn this study, results from two series of indirect tensile tests on Dionysos marble specimens, the Brazilian test and the ring test, are compared to those evaluated numerically by using the distinct element code PFC2D. Circular disc specimens with a diameter of 54 mm were prepared and tested in the laboratory. Specimens with different hole diameters were tested with respect to the ring test. The numerical simulations of this study were performed using the Bonded Particle Model (BPM) in PFC2D. The initial selection of the BPM micro-parameters was based on diagrams relating the PFC2D parameters and the synthetic rock properties. The models were calibrated by numerically simulating uniaxial compression tests and Brazilian tests. The ring-test PFC2D models were developed with the same specimen geometries as those of the laboratory tests and by applying the calibrated BPM micro-parameters. The numerically obtained fracture loads are compared to those measured experimentally. Furthermore, the evolution of bonds breakage during the simulation is compared to the rock fracture patterns observed during failure of the specimens. The simulation results demonstrate that both the macro-mechanical response and the failure process can be modeled using BPMs. Differences between the numerical results and the macroscopic marble behavior are discussed.en
Type of ItemΠλήρης Δημοσίευση σε Συνέδριοel
Type of ItemConference Full Paperen
Licensehttp://creativecommons.org/licenses/by/4.0/en
Date of Item2020-11-25-
Date of Publication2019-
SubjectDionysos marble en
Bibliographic CitationK. N. Kaklis, P. P. Nomikos, Z. T. Karatza and Z. G. Agioutantis, "Comparison of bonded-particle numerical model results with indirect tension experimental results for Dionysos marble," in 53rd U.S. Rock Mechanics/Geomechanics Symposium, New York City, New York, 2019.en

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