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Article
On the creep problem of soft-rigid interfaces: analysis of the normal contact behavior and application of creep models
In this study, we examined at the grain-scale the normal contact behavior of rigid-soft interfaces via a series of micromechanical experiments, in which “rigid” refers to quartz particle and “soft” refers to p...
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Article
Energy transport and dissipation in granular systems
The study of energy transport in granular systems can involve a number of different angles to view the problem; for example, one can propagate sinusoidal waves within the granular assembly, which makes the par...
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Article
Influence of Methocel cellulose ether additive on micro-scale friction, abrasion and energy dissipation of rough-heterogeneous particles
Understanding and modeling the contact behavior of particles provides enhanced constitutive laws in discrete-based simulations as well as a strong linkage between micro- and macroscopic behavior of granular ma...
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Article
A coupled numerical method to study the local stability of jointed rock slopes under long-distance bench blasting
In this work, a submodel coupling method has been developed to tackle this problem by coupling LS-DYNA and the four-dimensional lattice spring model (4D-LSM). LS-DYNA is used to simulate the detonation process...
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Article
Influence of iron oxide coating on the tribological behavior of sand grain contacts
Granular materials are often subjected to certain degrees of coating in natural conditions due to weathering and soil–environment interactions and the current literature has suggested that the development of s...
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Article
A study of wave propagation and stiffness anisotropy in anisotropically loaded granular material-synthetic fiber binary systems
The influence of polypropylene fiber inclusion on the wave propagation parameters and stiffness anisotropy of granular materials was examined through vertically and laterally positioned bender elements, by whi...
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Article
Mechanical, micro-structure and contour map** analyses of highly-porous intermediate-texture analog rock from instrumented micro-indentation in conjunction with statistical/machine learning tools
Exploring the spatial variability of the mechanical properties of rocks and cementitious/porous materials, provides an understanding on the distribution of the mechanical phases and the surface characteristics...
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Article
Probabilistic-based analysis and model selection of the tangential stiffness reduction: displacement curves of nonconforming contacts
Granular materials are of interest in a broad range of applications and the use of discrete-based numerical tools has been proved very promising in obtaining insights into their complex behavior. In discrete-b...
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Article
On the contact problem of soft-rigid interfaces: incorporation of Mindlin-Deresiewicz and self-deformation concepts
The contact problem of soft-rigid interfaces is investigated in this study performing micromechanical-based experiments on sand (rigid) grains sliding against granulated (soft) rubber and by incorporating the ...
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Article
Experimental and analytical investigation on the normal contact behavior of natural proppant simulants
Granular materials are of interest in various fields of engineering and science and they commonly display rough morphologies which govern their constitutive behavior. One of the emerging applications of granul...
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Article
A Micromechanical-Based Investigation on the Frictional Behaviour of Artificially Bonded Analogue Sedimentary Rock with Calcium Carbonate
The frictional behaviour of geological interfaces has garnered a significant amount of research attention in geophysics and geomechanics with major applications in the characterization of sediments, the analys...
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Article
The tribological behavior of iron tailing sand grain contacts in dry, water and biopolymer immersed states
We investigated experimentally the tribological behavior of tailing grain contacts using a micromechanical apparatus which allows high precision of force and displacement measurements to derive contact stiffne...
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Article
Open AccessMicromechanical experiments using a new inter-granule loading apparatus on gravel to ballast-sized materials
Micromechanical and tribological studies of geological materials with a particular focus on their contact-mechanics behavior at the grain scale are currently a major interest in the engineering and geoscience ...
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Article
Effect of Anisotropic Stress State on Elastic Shear Stiffness of Sand–Silt Mixture
Soil stiffness is a critical property in the evaluation of earth structure deformation and its accurate estimation is an essential part of any geotechnical investigation. In this study, the significant contrib...
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Article
Small-Strain Shear Modulus and Dam** Ratio of Sand-Rubber and Gravel-Rubber Mixtures
This study examines the small-strain dynamic properties of mixtures composed of sandy and gravelly soils with granulated tire rubber in terms of shear modulus (GO), and dam** ratio in shear (Dmin). Torsional re...
