Abstract
We discuss the application of DEM to two major issues in Geomechanics: failure description and stresses in partially saturated granular materials. As for failure description, a significant theoretical complexity arises from the non-associatedness of geomaterials and DEM has been instrumental in the understanding of failure before the plastic limit condition (the Mohr-Coulomb surface). As for stresses in partially saturated granular materials, a variety of microscopic stresses exist in the medium with contact forces, fluid pressures, and surface tension forces. However, the DEM framework handles this complexity in a consistent manner with respect to analytical homogenization . DEM provides thus a powerful tool to investigate the tensorial nature of capillary stresses due to the fluid mixture in partially saturated granular material.
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Darve, F., Duriez, J., Wan, R. (2017). DEM Modelling in Geomechanics: Some Recent Breakthroughs. In: Li, X., Feng, Y., Mustoe, G. (eds) Proceedings of the 7th International Conference on Discrete Element Methods. DEM 2016. Springer Proceedings in Physics, vol 188. Springer, Singapore. https://doi.org/10.1007/978-981-10-1926-5_1
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DOI: https://doi.org/10.1007/978-981-10-1926-5_1
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