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Fathipour-Azar, Hadi, Jalali, Seyed Mohammad Esameil, Torabi, Seyed Rahman. (1399). Application of cohesive crack model to simulation of rocks mechanical behavior in grain-based distinct element model. , 54(1), 87-92. doi: 10.22059/ijmge.2019.268843.594765
Hadi - Fathipour-Azar; Seyed Mohammad Esameil Jalali; Seyed Rahman Torabi. "Application of cohesive crack model to simulation of rocks mechanical behavior in grain-based distinct element model". , 54, 1, 1399, 87-92. doi: 10.22059/ijmge.2019.268843.594765
Fathipour-Azar, Hadi, Jalali, Seyed Mohammad Esameil, Torabi, Seyed Rahman. (1399). 'Application of cohesive crack model to simulation of rocks mechanical behavior in grain-based distinct element model', , 54(1), pp. 87-92. doi: 10.22059/ijmge.2019.268843.594765
Fathipour-Azar, Hadi, Jalali, Seyed Mohammad Esameil, Torabi, Seyed Rahman. Application of cohesive crack model to simulation of rocks mechanical behavior in grain-based distinct element model. , 1399; 54(1): 87-92. doi: 10.22059/ijmge.2019.268843.594765

Application of cohesive crack model to simulation of rocks mechanical behavior in grain-based distinct element model

International Journal of Mining and Geo-Engineering
مقاله 12، دوره 54، شماره 1، شهریور 2020، صفحه 87-92    اصل مقاله (814.13 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/ijmge.2019.268843.594765
نویسندگان
Hadi - Fathipour-Azar* 1؛ Seyed Mohammad Esameil Jalali2؛ Seyed Rahman Torabi3
1Department of Mining Eng., Petroleum and Geophysics Shahrood University of technology, Iran
2Associate of mining faculty of shahrood university
3Shahrood University
چکیده
This paper aims to study the mechanical behavior of rocks subjected to different mechanical loading conditions using the Cohesive Crack Model (CCM) and Grain-Based Model (GBM) in the Distinct Element Method (DEM) simulations. In the GBM-DEM, the Voronoi tessellation scheme is used, and intact materials are simulated as a collection of structural units (particles/blocks) bonded together at their contact areas. Implementing the CCM revealed a nonlinear behavior of grain interfaces under various loading modes. Numerical simulation of a tension-compression and direct shear test was conducted to verify that the CCM was implemented correctly. The simulated numerical curves were consistent to the results of theoretical calculations, indicating that the model incorporated into GBM-DEM could simulate more realistically similar to the micro-cracking mechanisms. Finally, CCM was used to simulate the uniaxial and biaxial compression tests under the Universal Distinct Element Code (UDEC). The results of the models were in a good agreement with the relevant responses of the rock under different loading conditions, verifying the applicability of the CCM.
کلیدواژه‌ها
Cohesive crack model؛ Grain based distinct element model؛ Interface؛ Constitutive model؛ Calibration
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