| Issue |
EPJ Web Conf.
Volume 340, 2025
Powders & Grains 2025 – 10th International Conference on Micromechanics on Granular Media
|
|
|---|---|---|
| Article Number | 09021 | |
| Number of page(s) | 4 | |
| Section | Particle-Based Numerical Methods | |
| DOI | https://doi.org/10.1051/epjconf/202534009021 | |
| Published online | 01 December 2025 | |
https://doi.org/10.1051/epjconf/202534009021
Exploring inertial effects in the flow of granular media: Double-scale approach MPM×DEM
1 Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR, 38000 Grenoble, France
2 Univ. Grenoble Alpes, CNRS, INRAE, IRD, Grenoble INP, IGE, 38000 Grenoble, France
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Published online: 1 December 2025
Abstract
In the exploration of cohesive granular materials, one challenge lies in the significant impact of microstructure evolution on the system’s overall mechanical behavior, which necessitates the consideration of a broad spectrum of scales. To address this, a hierarchical double-scale approach that combines MPM (Material Point Method) and DEM (Discrete Element Method) has been introduced. The MPM solver, responsible for large-scale flow, uses a Computationally Homogenized Constitutive Law (CHCL) derived from the resolution of numerous individual DEM problems at each material point. The DEM cells are three-periodic and incorporate standard frictional contact laws between the elements. This work focuses mainly on the unique aspects of the two-way coupling strategy between these two numerical methods, with particular emphasis on coordinating the explicit MPM and DEM time steps to ensure computational stability. Preliminary benchmark simulations of the collapse of a cohesive column are presented, with emphasis on the inertial aspects enabled by the dynamic nature of MPM and DEM.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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