2020
DOI: 10.1007/s00603-020-02139-7
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Fracture Assessment of Quasi-brittle Rock Simulated by Modified Discrete Element Method

Abstract: New developments of an in-house hybrid code, named Modified Discrete Element Method (MDEM) are presented in the paper. The new developments are on the treatment of pre-existing and propagating fractures in quasi-brittle materials. These developments are the embedment of Linear Elastic Fracture Mechanics (LEFM) and elastic-softening crack band model-based methodologies in the MDEM and their application in lab and reservoir scale. Using the first methodology, MDEM can calculate stress intensity factors, K I and … Show more

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Cited by 4 publications
(1 citation statement)
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“…Affected by the thickness of the coal seam, the task of cutting and loading the coal particles is mainly carried out by the front drum. Based on the above hypotheses, a three-dimensional bond contact model of coal wall was established (Cheng et al, 2019;Gheibi and Holt, 2020). After the completion of the construction of the coal wall, the three-dimensional geometric model of the drum was established, and the material properties were set.…”
Section: Establishment Of Discrete Element Modelmentioning
confidence: 99%
“…Affected by the thickness of the coal seam, the task of cutting and loading the coal particles is mainly carried out by the front drum. Based on the above hypotheses, a three-dimensional bond contact model of coal wall was established (Cheng et al, 2019;Gheibi and Holt, 2020). After the completion of the construction of the coal wall, the three-dimensional geometric model of the drum was established, and the material properties were set.…”
Section: Establishment Of Discrete Element Modelmentioning
confidence: 99%