Multiscale modeling large deformation in granular media

Computational modeling of large deformation in granular media has to tackle two concurrent challenges: (a) the continuous change of topology and boundary conditions during the loading process and (b) the loading history and state dependency of mechanical behavior of granular media. Accurate and efficient simulations of large deformation in granular media require not only advanced material models, but also robust computational algorithms and tools. The focus of this dissertation is placed on developing a novel, unified multiscale modeling framework to address both challenges for effective simulation of large deformation in granular media. A multiscale modeling scheme is proposed by hierarchical coupling of material point method (MPM) and discrete element method (DEM), wherein MP...[ Read more ]