A boundary-spheropolygon element method for modelling sub-particle stress and particle breakage

Jiang, Yupeng; Herrmann, Hans J.; Alonso‐Marroquín, Fernando

doi:10.1016/j.compgeo.2019.05.002

Cited by 11 publications

(1 citation statement)

References 33 publications

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“…Comparing with other DEM-based methods, the SDEM could efficiently handle the contact forces among irregular particles and preserve the conservation of mechanical energy. Due to these merits, SDEM has been coupled with the boundary element method (BEM) for simulating sub-particle stress and particle breakage 27 . The interactions between the fluid and irregular rigid bodies are also studied using the LBM-SDEM 28 .…”

Section: Introductionmentioning

confidence: 99%

A hybrid material‐point spheropolygon‐element method for solid and granular material interaction

Jiang

et al. 2020

Numerical Meth Engineering

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Capturing the interaction between objects that have an extreme difference in Young's modulus or geometrical scale is a highly challenging topic for numerical simulation. One of the fundamental questions is how to build an accurate multi-scale method with optimal computational efficiency. In this work, we develop a material-point-spheropolygon discrete element method (MPM-SDEM). Our approach fully couples the material point method (MPM) and the spheropolygon discrete element method (SDEM) through the exchange of contact force information. It combines the advantage of MPM for accurately simulating elastoplastic continuum materials and the high efficiency of DEM for calculating the Newtonian dynamics of discrete near-rigid objects. The MPM-SDEM framework is demonstrated with an explicit time integration scheme. Its accuracy and efficiency are further analysed against the analytical and experimental data. Results demonstrate this method could accurately capture the contact force and momentum exchange between materials while maintaining favourable computational stability and efficiency. Our framework exhibits great potential in the analysis of multi-scale, multi-physics phenomena.

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Section: Introductionmentioning

confidence: 99%

A hybrid material‐point spheropolygon‐element method for solid and granular material interaction

Jiang

et al. 2020

Numerical Meth Engineering

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Time domain coupling of the boundary and discrete element methods for 3D problems

Barros,

Pereira,

Rojek

et al. 2024

Comput Mech

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This paper presents an extension of the authors’ previously developed interface coupling technique for 2D problems to 3D problems. The method combines the strengths of the Discrete Element Method (DEM), known for its adeptness in capturing discontinuities and non-linearities at the microscale, and the Boundary Element Method (BEM), known for its efficiency in modelling wave propagation within infinite domains. The 3D formulation is based on spherical discrete elements and bilinear quadrilateral boundary elements. The innovative coupling methodology overcomes a critical limitation by enabling the representation of discontinuities within infinite domains, a pivotal development for large-scale dynamic problems. The paper systematically addresses challenges, with a focus on interface compatibility, showcasing the method’s accuracy through benchmark validation on a finite rod and infinite spherical cavity. Finally, a model of a column embedded into the ground illustrates the versatility of the approach in handling complex scenarios with multiple domains. This innovative coupling approach represents a significant leap in the integration of DEM and BEM for 3D problems and opens avenues for tackling complex and realistic problems in various scientific and engineering domains.

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Particle fragmentation based on strain energy field

et al. 2020

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A boundary-spheropolygon element method for modelling sub-particle stress and particle breakage

Cited by 11 publications

References 33 publications

A hybrid material‐point spheropolygon‐element method for solid and granular material interaction

A hybrid material‐point spheropolygon‐element method for solid and granular material interaction

Time domain coupling of the boundary and discrete element methods for 3D problems

Particle fragmentation based on strain energy field

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