Proceedings of the 7th International Conference on Discrete Element MethodsXikui Li, Yuntian Feng, Graham Mustoe This book presents the latest advances in Discrete Element Methods (DEM) and technology. It is the proceeding of 7th International Conference on DEM which was held at Dalian University of Technology on August 1 - 4, 2016. The subject of this book are the DEM and related computational techniques such as DDA, FEM/DEM, molecular dynamics, SPH, Meshless methods, etc., which are the main computational methods for modeling discontinua. In comparison to continua which have been already studied for a long time, the research of discontinua is relatively new, but increases dramatically in recent years and has already become an important field. This book will benefit researchers and scientists from the academic fields of physics, engineering and applied mathematics, as well as from industry and national laboratories who are interested in the DEM. |
Contents
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78 Exploring the Undrained Cyclic Behaviour of Sand Using DEM | 757 |
79 Effect of Particle Shape on the Formation of Sandpile | 766 |
80 Influence of Inherent Anisotropy on the Soil Behavior in Simple Shear Tests Using DEM | 777 |
81 Influence of Rigid and Flexible Top Boundaries on Geogrid Pullout Behavior Using DEM | 785 |
82 DEM Analysis of Cone Penetration Tests in Pure and Structured Sand Grounds | 793 |
83 Discrete Element Simulation of the Direct Shear Test of Sandy Soil | 801 |
84 Micromechanical Simulation of Fines Content Effect of Soils Using the Discrete Element Method | 811 |
85 Simulation of SandTire Mixture by Discrete Element Method | 821 |
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10 Evolutions of Fabric and Contact Forces of Granular Materials Under Continuously Varying b Value Using DEM | 81 |
11 Random Packing of Tetrahedral Particles Using the Polyhedral and Multisphere Discrete Element Method | 91 |
12 Energy Dissipation During Impact of an Agglomerate Composed of Autoadhesive ElasticPlastic Particles | 100 |
13 Effect of Particle Shape on GeogridReinforced Granules | 109 |
14 Applicability Evaluation of Similarity Principle in Discrete Element Analysis | 117 |
15 Studies of the Performance of Particle Dampers in Centrifugal Fields and the Influence of Recovery Coefficient on Vibration Suppression | 124 |
16 Algorithms and Capabilities of Solidity to Simulate Interactions and Packing of Complex Shapes | 139 |
17 Particle Shape Consideration in DEM Triaxial Test Simulations | 150 |
18 Study on the Microscopic Structure and the Bearing Capacity of the Elliptical Granular System in the Random Particle Size | 161 |
19 Improving Estimates of Critical TimeSteps for Discrete Element Simulations | 169 |
20 Discussion on the Difference of the Grain Particle Parameters in Reality and DEM | 177 |
21 Stochastic Discrete Element Modelling of Rough Particles | 183 |
22 Sphere Packing Based on Geometric Algorithm Generation Method | 193 |
23 Verification of an Automated Work Flow for Discrete Element Material Parameter Calibration | 201 |
24 The Influence of Rolling Resistance on Granular Responses Under Triaxial Loading Paths | 209 |
25 An Investigation of Single Particle Crushing Tests on IrregularShaped Quartz Sand with DEM | 217 |
26 The Influence of Rotational Resistance on Critical State of Granular Materials | 225 |
27 A New Method for the Generation of Polydisperse DEM Specimens | 235 |
28 Influence of Particle Shape on Mechanical Behavior of Granular Materials | 245 |
29 The Influence of Particles Aspect Ratio on the Shear Behaviour of Granular Materials | 253 |
DEMFEM Modelling of Granular Materials | 265 |
30 Advances in Multiscale FEMDEM Modeling of Granular Materials | 266 |
31 Modeling the Particle Breakage by Using Combined DEM and SBFEM | 281 |
32 Numerical Simulations of the Interactions Between a Pneumatic Tire and Granular Sand by 3D DEMFEM | 289 |
33 Combined FiniteDiscrete Element Method Modeling of Rock Failure Problems | 301 |
34 A New Finite Discrete Element Approach for Heat Transfer in Complex Shaped Multi Bodied Contact Problems | 310 |
35 Numerical Simulation of InPlane Loaded Unreinforced Masonry Walls Based on Homogenized Discrete Element Model | 329 |
36 Study on MicroMechanism of Concrete Hydraulic Fracturing Using DEM | 343 |
37 FiniteDiscrete Element Analysis of Interface Shear Damage to HDPE Geomembrane in Contact with Gravel Drainage Layer | 351 |
38 Simulation of Particle Dampers Using the Combined FiniteDiscrete Element MethodA Simple Case | 360 |
39 Investigation on the Integrity of Cement Annulus During Multistage Horizontal Fracturing with FEMDEM | 369 |
40 Evaluation of DEM and FEMDEM in Modeling the Fracture Process of Glass Under HardBody Impact | 377 |
41 Multiscale Modeling of Granular Assemblies Based on Different Micromechanical Strain | 389 |
42 Simulation and Characterisation of Packed Columns for Cylindrical Catalyst Supports and Other ComplexShaped Bodies | 397 |
Contact Bonding and Constitutive Modeling | 408 |
43 A Gradient Model for Granular Materials Based on Thermomicromechanics | 409 |
44 Role of DEM in Assessment of Continuum Equations for SolidSolid Drag Force with Various Particle Size Ratios | 423 |
45 Elasticity and Mechanical Response of a Composite Particle System Induced by a Vertical Loading | 429 |
46 Heavy Impact Compaction Modeling and Analysis on Unbound Paving Mixtures | 437 |
47 A Simple Multiscale Model for Granular Soils with Geosynthetic Inclusion | 445 |
48 A Novel Rock Contact Model Considering WaterSoftening and Chemical Weathering Effects | 455 |
49 Investigation of Contact Parameters of DEM Model in Flow Process | 465 |
50 On the StressForceFabric Relationship in Anisotropic Granular Materials | 474 |
51 Influences of Stiffness Ratio Friction Coefficient and Strength Ratio on the Macro Behavior of Cemented Sand Based on DEM | 485 |
52 A 3D Mesoscopic Model for Simulating Failure Process of Concrete Based on Discrete Element Method | 496 |
53 DEM Simulation of Random Loose Packings of MicronSized Particles with Both Adhesion and Friction | 515 |
54 Preliminary DEM Analysis on MicroMechanical Behavior of the Composite Cemented Granules Under Complex Stress Conditions | 525 |
DEM Related Methods | 535 |
55 CFDDEM Simulation of Flocculation and Sedimentation of Cohesive Fine Particles | 536 |
56 Elasticity Constants of Clay Minerals Using Molecular Mechanics Simulations | 543 |
57 A Comparative Study of Three Classes of Boundary Treatment Schemes for Coupled LBMDEM Simulations | 551 |
58 Application of the Method of Peridynamics to the Simulation of Hydraulic Fracturing Process | 561 |
59 Application of the Coupled Discrete Element Modelling and Modelica Based Multibody Dynamics in SystemLevel Modelling | 571 |
60 Equilibrium Distribution Functions in Entropic Lattice Boltzmann Method | 579 |
61 Parametric Sensitivity Study of Particle Shape Effect Through 3D Printing | 593 |
62 Study on the Multisphere Method Modeling the 3D Particle Morphology in DEM | 601 |
63 An Upgraded CFDDEM Investigation on the Liquefaction Mechanism of Sand Under Cyclic Loads | 609 |
A CFDDEM Approach | 618 |
Granular Flow | 627 |
65 The Effect of Powder Flowability in the Selective Laser Sintering Process | 629 |
66 A DEM Analysis of Particle Climbing in a Vibrating Pipe | 637 |
67 Influence of Inclined Angles on the Stability of Inclined Granular Flows Down Rough Bottoms | 647 |
68 DEM Simulation of Particle Flow in a ParallelHopper BellLess Blast Furnace Charging Model | 659 |
69 Basal Effect in Mono and Bidisperse Chute Flows | 670 |
OpenSource Power for FluidParticle Systems | 679 |
71 Numerical Simulation of the Particular Flow on an Agricultural Screen with a Complex Motion Based on the Coupling Model of PMBK with DEM | 687 |
72 Study on Drag Force Coefficients in Modeling Granular Flows in a SlotRectangular Spouted Bed | 697 |
73 The Development of a Simplified System for Measuring the Passage of Particles on and Through Moving Screen Surfaces Using DEM | 708 |
DEM in Soil Mechanics | 722 |
74 Analysis of Strength Characteristics for Granular Materials Based on Discrete Element Simulation | 723 |
75 On the Use of the Uniaxial Shear Test for DEM Calibration | 733 |
76 Investigation on the RateDependent Behavior of Sands via DEM | 741 |
77 DEM Analysis of Inclined Cone Penetration Test in Structured Sand Ground | 749 |
86 Effect of Different Temperatures and Pore Pressures on Geomechanical Properties of PoreFilling Type of Methane Hydrate Soils Based on the DE... | 827 |
87 Discrete Element Analysis of the Fabric Evolution of Granular Soils During Cyclic Loading | 837 |
88 DEM Simulation of Dynamic Compaction with Different Tamping Energy and Calibrated Damping Parameters | 845 |
DEM in Rock Mechanics | 852 |
89 Discrete Simulation of Fracturing and Failure of Rock Samples | 855 |
90 A New Rock Slicing Algorithm with Reduced Data Structure for Discrete Element Method Analyses for Rock Mechanics | 863 |
91 MesoStructure Parameters of Discrete Element Method of Sand Pebble Surrounding Rock Particles in Different Dense Degrees | 871 |
92 Dimensions and Brittleness Effect on the Size of Process Zone in Rocklike Material Characterized by Bonded Particle Model | 881 |
93 Numerical Simulation of Resonant Column Tests on Jointed Rocks Using DEM | 889 |
94 3D Numerical Modeling of Strength in Fractured Rock Mass | 897 |
95 DEM Modeling of Brittle Behavior of Rock Specimens with Two Infilled Flaws | 907 |
96 ThreeDimensional Discrete Element Model for Triaxial Tests of Graded Stones Under Different Gradations | 917 |
97 3D Discrete Element Model for TBM Cutter Breaking Rock and Dynamic Loads Analysis | 927 |
98 Calibration of Microscopic Mechanical Parameters of Granite Using Actual Distributions and Orthogonal Simulations | 935 |
DEM in Chemical Engineering | 946 |
99 CFDDEM Simulation of a Conical Spouted Bed Operating with High Density Particles | 947 |
100 CFDDEM Study the Effect of CarrierDrug Mass Ratio on the Aerosolisation Process in Original and Modified Dry Powder Inhalers | 957 |
101 A Numerical Study of the Effect of Loading Profiles on MixingSegregation of Particles in the Truck Mixer via DEM | 967 |
A Comparative Study of DEM and FEM in Modelling Hopper Flow | 977 |
103 Simulation of Multiphase Reactive Gas Transport Using Smoothed Particle Hydrodynamics | 986 |
104 DEMCFD Modelling of Electrostatic Phenomena in Fluidization | 995 |
105 Numerical Simulation of GasSolid Flow in a Wurster Fluidized Bed | 1005 |
106 CFD Simulation of Hydrodynamics of ThreeDimensional Circulating Fluidized Beds with EMMS Model | 1013 |
107 Investigation of GasSolid Flow Dynamics and Heat Transfer in Fluidized Beds by Using DEMLES Coupling Approach | 1022 |
DEM in Geotechnical and Ocean Engineering | 1036 |
Photoelastic Measurement and Discrete Element Simulation | 1037 |
109 Influence of Base Roughness on Kinematic and Mechanical Characteristics of Debris Flows | 1047 |
110 Numerical Study on Seismic Isolation Effect of Gravel Cushion | 1055 |
111 Interaction Between Floater and Sea Ice Simulated with Dilated Polyhedral DEM | 1064 |
112 Investigation into the SoilRoot Composites Using Distinct Element Method | 1075 |
113 Macro and Micro Structural Characteristics of Force Chains in Overlaying Strata Above Top Caving Mining Face | 1085 |
114 DEM Analysis of SmallDisplacement Earth Pressure Against a Rigid Retaining Wall with the Wall Moving Towards Structured Sand | 1092 |
Powder Technology | 1104 |
115 Numerical Investigation of Optical Sorting Using the Discrete Element Method | 1105 |
116 Dependence of Granular Materials Homogenization on Geometrical Aspects in Commonly Used Mixers via DEM | 1115 |
117 The Effect of Rotational Speed on Granular Dynamics and Homogenization in a Vertical Bladed Mixer | 1123 |
118 DEM Modelling of Silo Loads Asymmetry Induced by Eccentric Discharge | 1132 |
119 Concurrent Adaptive MassConserving Comminution of Granular Materials Using Rigid Elements | 1143 |
120 Understanding Size Segregation in Tumbling Mills | 1153 |
DEM in Mechanical Engineering | 1169 |
121 Modeling Roughness Effect of Joint Using RoughJoint Model | 1170 |
122 DEM in Analyses of Nuclear Pebble Bed Reactors | 1183 |
123 Modified Modeling of Selftwist Process of Multistage Cable Based on Discrete Element Method | 1193 |
124 DEM Analysis of Interaction Between Granular Materials and a Cutting Blade | 1200 |
125 DEM Simulation of Rubble Ice Accumulation in Front of Water Intake Area of Nuclear Power Plant | 1209 |
126 Optimizing Heavy Equipment for Handling Bulk Materials with AdamsEDEM Cosimulation | 1219 |
DEM in Agricultural Engineering | 1225 |
127 Nonlinear Dynamic Process of Soil Tillage Under Straw Mulching Model | 1226 |
128 Study of Connection Mechanics Model and Mechanical Properties of Corn Kernel Carpopodium Based on DEM | 1241 |
129 The DEMBased Digital Design Platform for Agricultural MachineryAgriDEM | 1253 |
130 Study on Screening Efficiency of Banana Vibrating Screen Based on 3D DEM Simulation | 1264 |
131 Determination and Analysis for Parameters of Shape Size Physical and Mechanical Properties of Soybean Grains | 1277 |
132 Investigation of the Shape Dimensions and DEM Modeling Method of Maize Grains | 1287 |
DEM in Transport Engineering | 1296 |
133 Material Transport Study into a SAG Mill by DEM Impact on the Inclination of Lifter | 1299 |
134 Numerical Simulation of the Interaction between the Grousers of Tracked Vehicle and the Soil Using Discrete Element Method | 1307 |
135 Discharging Trajectory of the Bucket Wheel StackerReclaimer Based on DEM | 1315 |
136 DEM Analysis of Ballast Breakage Under Train Loads and Its Effect on Mechanical Behaviour of Railway Track | 1323 |
137 Simplified Multisphere ModelBased DEM Simulation of Particle Behavior in Hopper During Ship Loading for Dust Control | 1335 |
High Performance DEM Computing | 1343 |
138 GPU DEM Simulations and Experimental Studies of Ball Milling Process for Various Particle Shapes | 1344 |
A Fast and Flexible Particle Solver Part A Technical Advances | 1353 |
140 Computing Framework of LargeScale Dilated Polyhedral DEM Particles Simulation Based on GPU | 1361 |
141 Computing with Nonconvex Polyhedra on the GPU | 1371 |
142 Industrial Scale Particle Simulations on the GPU Using the BlazeDEM Code | 1378 |
143 Simulation of Heat Transfer in Granular Systems with DEM on GPUs | 1389 |
144 Analysis on Motion Behavior of Spherical Shell in a Periodical Shear Flow Based on CUDA Parallel Computing Technique | 1399 |
DEM Related Experimental Studies | 1408 |
145 Photoelastic Experiments on Force Chain Evolution in Granular Materials under Bilateral Flowing Conditions | 1411 |
146 The Design and Development of the Granular Material Photoelastic Device with Multiway Loading | 1418 |
147 Determination of Microparameters in DEM Through the Whole Surface Deformation Measurement in the Triaxial Test | 1429 |
148 Identification and Analysis of Force Chain Structures in Photoelastic Experiments | 1440 |
149 Study of Shear Behavior of Homogeneous and Heterogeneous Granular Materials by Experimentation and Numerical Simulation of Triaxial Test | 1447 |
Preliminary DEM Analysis on MicroMechanical Behavior of the Composite Cemented Granules Under Complex Stress Conditions | 1456 |
Other editions - View all
Proceedings of the 7th International Conference on Discrete Element Methods Xikui Li,Yuntian Feng,Graham Mustoe No preview available - 2016 |
Proceedings of the 7th International Conference on Discrete Element Methods Xikui Li,Yuntian Feng,Graham Mustoe No preview available - 2018 |
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