A discrete element method (DEM)-based approach to simulating particle breakage

Kuang, Dumin; Long, Zhilin; Ikechukwu, Ogwu; Chen, Zhuo

doi:10.1007/s11440-021-01406-3

Cited by 16 publications

(3 citation statements)

References 65 publications

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“…In it, a particle breaks along the interparticle contacts between the clustered spheres. Different variants of the clustered-sphere model have been developed by simply using other shapes, such as polyhedra, to replace spheres as the primitives, including the clustered-polyhedron model 113 and its extension based on Voronoi tessellation 114 (or bonded cell method 110 for both 2D 115 and 3D 116 ). Such primitive-clustered approaches enable dynamic tracking of cracks but have the pitfall that the possible cracks can only pass through prescribed internal contacts between primitives.…”

Section: Crushable Particlesmentioning

confidence: 99%

The role of particle shape in computational modelling of granular matter

Zhao,

Luding

2023

Nat Rev Phys

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Granular matter is ubiquitous in nature and is present in diverse forms in important engineering, industrial and natural processes. Particle-based computational modelling has become indispensable to understand and predict the complex behaviour of granular matter in these processes. The success of modern computational models requires realistic and efficient consideration of particle shape. Realistic particle shapes in naturally occurring and engineered materials offer diverse challenges owing to their multiscale nature in both length and time. Furthermore, the complex interactions with other materials, such as interstitial fluids, are highly nonlinear and commonly involve multiphysics coupling. This Technical Review presents a comprehensive appraisal of state-of-the-art computational models for granular particles of either naturally occurring shapes or engineered geometries. It focuses on particle shape characterization, representation and implementation, as well as its important effects. In addition, the particles may be hard, highly deformable, crushable or phase transformable; they might change their behaviour in the presence of interstitial fluids and are sensitive to density, confining stress and flow state. We describe generic methodologies that capture the universal features of granular matter and some unique approaches developed for special but important applications. Sections• Consideration of shape effects in coupled simulations of granular particles and environmental fluids requires revamped theories and methods to faithfully reflect their underpinning multiphase, multiphysics nature.• Incorporating realistic particle shapes in granular matter modelling must harness the latest advances in parallel computing and machine learning for effective large-scale computations.Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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Section: Crushable Particlesmentioning

confidence: 99%

The role of particle shape in computational modelling of granular matter

Zhao,

Luding

2023

Nat Rev Phys

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“…At the deep seabed with high confining pressure, grain breakage process is an interesting phenomenon, which has attracted much attention 21–24 . Some numerical simulations are carried out to study the grain breakage process and its effects on localized deformation bands formation 25–33 . For example, Ip and Borja proposed a framework for modeling breakage process during compaction band formation by coupling a phase‐field approach with modified Cam‐Clay plasticity and breakage mechanics 30 .…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23][24] Some numerical simulations are carried out to study the grain breakage process and its effects on localized deformation bands formation. [25][26][27][28][29][30][31][32][33] For example, Ip and Borja proposed a framework for modeling breakage process during compaction band formation by coupling a phase-field approach with modified Cam-Clay plasticity and breakage mechanics. 30 Wang et al developed conjugated bond-pair-based peridynamic 31,32 and phase-field model 33 for simulating fracture process and compaction bands formation, respectively.…”

Section: Introductionmentioning

confidence: 99%

A hypoplastic model for hydrate‐bearing sand considering hydrate saturation and grain breakage

Qian,

Wu,

et al. 2023

Num Anal Meth Geomechanics

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We present a hypoplastic model to capture the mechanical responses of hydrate‐bearing sands by incorporating hydrate saturation and grain breakage. In our model, a new degradation scalar is introduced to account for the effects of hydrate bonding evolution on strength. We also adopt the variable critical state line to assess the effects of hydrate saturation and relative breakage ratio at high confining pressure. This model is validated by modeling a series of laboratory tests.

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