Micro origins for macro behavior in granular media

Zhao, Jidong; Jiang, Mingjing; Soga, Kenichi; Luding, Stefan

doi:10.1007/s10035-016-0662-9

Cited by 27 publications

(10 citation statements)

References 44 publications

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“…In parallel, there have been substantial efforts in optimizing various numerical approaches to understand granular flow from both fundamental and applications perspectives (see, e.g., a recent editorial [36]). There are excellent reviews and monographs in this direction (see, e.g., [37,38,39,40]) along with well established open source simulation packages for simulating particulate materials, such as LAMMPS, MecuryDPM, LIGGGHTS [41,42,43] for interested readers to explore further.…”

Section: Overviewmentioning

confidence: 99%

Challenges in `seeing' through particulate materials

Huang¹,

Schröter²

2022

Preprint

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In this perspective article, we discuss the challenges of imaging granular particles in three dimensions. Starting with a brief motivation for investigating particulate materials, we provide an overview of selected experimental approaches developed for studying static or dynamic granular systems. We then list some of the challenges and solutions associated with X-ray tomography, one of the standard methods to study static packings. Subsequently, we discuss new techniques such as 'smart' tracer and radar tracking for granular dynamics. We close by giving our personal view on the outstanding problems and potential solutions in the future.

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Section: Overviewmentioning

confidence: 99%

Challenges in `seeing' through particulate materials

Huang¹,

Schröter²

2022

Preprint

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“…For example, previous studies on granular materials have shown a strong dependency of their mechanical response as bulk systems, on the interparticle friction [ 29 , 30 , 31 , 32 , 33 ] and the properties/characteristics of individual grains such as roughness, shape and strength/mode of failure, which influence the energy dissipation mechanisms and the resistance against shearing-induced strains [ 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ]. Multi-scale insights of granular systems can provide a framework to understand the load transfer mechanisms and the flow behavior of particulate materials at a fundamental level [ 36 , 37 , 38 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ], which are strongly linked to the properties at the grain-scale. Thus, based on what the state-of-the-art literature suggests, quantification of the grain-scale interface behavior and morphological/mechanical characteristics of individual particles of extra-terrestrial materials, would be invaluable to produce predictive tools which will allow a precise examination of rover wheel-soil interaction, structure-soil interaction as well as a fundamental understanding of transport processes on the surface of the Mars and the Moon.…”

Section: Introductionmentioning

confidence: 99%

A Grain-Scale Study of Mojave Mars Simulant (MMS-1)

Kasyap

Senetakis

2021

Sensors

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Space exploration has attracted significant interest by government agencies and the scientific community in recent years in an attempt to explore possible scenarios of settling of facilities on the Moon and Mars surface. One of the important components in space exploration is related with the understanding of the geophysical and geotechnical characteristics of the surfaces of planets and their natural satellites and because of the limitation of available extra-terrestrial samples, many times researchers develop simulants, which mimic the properties and characteristics of the original materials. In the present study, characterization at the grain-scale was performed on the Mojave Mars Simulant (MMS-1) with emphasis on the frictional behavior of small size samples which follow the particle-to-particle configuration. Additional characterization was performed by means of surface composition and morphology analysis and the crushing behavior of individual grains. The results from the study present for the first time the micromechanical tribological response of Mars simulant, and attempts were also made to compare the behavior of this simulant with previously published results on other types of Earth and extra-terrestrial materials. Despite some similarities between Mars and Moon simulants, the unique characteristics of the MMS-1 samples resulted in significant differences and particularly in severe damage of the grain surfaces, which was also linked to the dilation behavior at the grain-scale.

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“…Over recent years, various approaches have been proposed to obtain rough particles. 6 Among this wide range of methods, grinding 7,8 and 3D printing 9,10 are the least and most controllable methods, respectively. Chemical treatment is a method for roughening particle surfaces that is improving in tuning the roughness.…”

Section: ■ Introductionmentioning

confidence: 99%

Surface Morphology Signature of Critical Separated Length and Glass Transition Temperature during Seeded Dispersion Polymerization

Kiany

Goharpey

2021

Langmuir

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The properties of colloids are considerably affected by particles’ surface morphology. In this work, for understanding the mechanism of roughness formation in polymeric core–shell (CS) particles, the surface morphology of synthesized CS particles through seeded dispersion polymerization (SDP) in the presence of poly(methyl methacrylate) seeds was investigated. The results revealed that shell polymers with higher solubility parameters (δ) and glass transition temperatures (T g) had a rougher surface. These parameters directly affect the time needed for chain deformation, which is a critical parameter in controlling the final morphology. We suggested a relation based on these parameters to predict the surface morphology (smoothness or roughness) of CS particles synthesized through SDP in water.

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Micro origins for macro behavior in granular media

Cited by 27 publications

References 44 publications

Challenges in `seeing' through particulate materials

Challenges in `seeing' through particulate materials

A Grain-Scale Study of Mojave Mars Simulant (MMS-1)

Surface Morphology Signature of Critical Separated Length and Glass Transition Temperature during Seeded Dispersion Polymerization

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