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Dominant Partitioning of Rock Masses Discontinuities Based on Information Entropy Selective Heterogeneous Ensemble
In order to make up for the shortcomings of traditional discontinuity occurrence clustering algorithms, such as narrow application scope, difficulty...
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Mechanical response and AE characteristics of heterogeneous rock under dynamic compression tests based on moment tensor analysis
Rock heterogeneity significantly influences a rock mass's dynamic mechanical behavior and fracture evolution. This study focused on creating...
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Numerical investigation of the effect of grain size-to-particle size ratio on the dynamic fracture toughness of granite by using PFC3D-GBM
Based on the Particle Flow Code, a novel grain-based model based on the Particle Flow Code (PFC3D-GBM) is proposed, in which the mineral grains can...
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Size of representative elementary volume for heterogeneous rocks evaluated using distinct element method
The determination of the size of the representative elementary volume (REV) is important to measure or predict mechanical and physical effective...
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Laboratory investigation on microcrack fracturing behaviour of granite under quasi-static combined compression and shear
AbstractThe mechanical characteristics of brittle materials submitted to combined compression and shear loading (CCSL) have received considerable...
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A hybrid method for generating heterogeneous digital models for granites using a conditional filtering process and multiple level Weibull distribution functions
In this study, combining geometric and statistical modelling techniques together, a novel hybrid heterogeneity digital model generation method for...
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A statistical DEM approach for modelling heterogeneous brittle materials
By utilizing numerical models and simulation, insights about the fracture process of brittle heterogeneous materials can be gained without the need...
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Numerical study of rock-breaking performance of cutters in heterogeneous sand cobble ground
Further research into tunneling performance in heterogeneous sand cobble ground demands an accurate numerical model of actual formation. In this...
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Bleeding of Cement Pastes Modified with the Addition of Granite Powder
The article presents the results of bleeding tests for cement pastes modified with the addition of granite powder. Bleeding is the process of...
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Numerical investigation of blast-induced fractures in granite: insights from a hybrid LS-DYNA and UDEC grain-based discrete element method
AbstractThe micro heterogeneities have a significant effect on the mechanical behaviour and failure mode of brittle rocks. In order to study the...
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An experimental and numerical investigation on rock cutting behavior of specially-shaped PDC cutter
A theoretical model of ductile-brittle transition considering the cutter-rock friction was established, and the cutting force, mechanical specific...
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The ductile–brittle failure mode transition of hard brittle rock cutting—new insights from numerical simulation
AbstractIn rock mass cutting, the two main failure modes are ductile failure and brittle failure, and it strongly influence the rock breaking...
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Analysis of Rock-Breaking Mechanism and Drillstring Dynamics of an Innovative Multi-Ridge-Curve-Shaped PDC Cutter
Non-planar Polycrystalline Diamond Compact (PDC) cutters have been widely used in deep formations and have certain advantages in improving the...
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An effective dual-medium approach to simulate microwave heating in strongly heterogeneous rocks
AbstractMicrowave irradiation is widely applied as a heating method since this approach avoids the intrinsic limitations of heat transfer via...
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A numerical study based on GBM3D-DEM model: Multi-level force chain analysis in dynamic flexural tensile strength test
The force chain network is the key information of rock materials under loading, which is close to the micro-scale cracking and macroscopic mechanical...
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Investigation on the Tool-Rock Interaction Using an Extended Grain-Based Model
The poor drill-ability of rock in deep hard formation leads to the problems of low rate of penetration (ROP) and high drilling cost. A detailed...
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Exploration of the Mesoscopic Failure Process of Granite Based on a PDE Method
The meso-structure of rock influences its macro-mechanical properties. In traditional digital image processing, the filter operator causes fuzzy...
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Numerical analysis and application of stress corrosion model considering strain softening
The deformation behavior of rock over time dominated by stress corrosion has been an important research topic for a long time. Based on the principle...
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Laboratory testing and numerical simulation of properties and thermal-induced cracking of Eibenstock granite at elevated temperatures
The knowledge about thermo-mechanical properties of granite is still limited to some extent. Individual measurements are necessary to obtain reliable...
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Experimental and numerical studies on dynamic fracturing behavior of roughly jointed rock
The surface roughness is an important feature of rock joints. Its effect on the mechanical properties of joints is significant in characterizing...
