  We provide a numerical platform for the analysis of particle shape and
topology effect on the macroscopic behavior of granular media. We work within a
Discrete Element Method (DEM) framework and apply a peridynamic model for
deformable particles accounting for deformation and damage of individual
particles. To accommodate arbitrary particle shapes including nonconvex ones as
well as particle topology, an efficient method is developed to keep
intra-particle peridynamic interaction within particle boundaries. Particle
contact with the rigid boundary wall is computed analytically to improve
accuracy. To speed up simulations with particles of different shapes and sizes
the initial configuration is chosen using security disks containing different
particle shapes that are placed in a jammed state using an optimization-based
method. The effect of particle shape and topology on settling and compaction of
the aggregate for deformable particles is analyzed.
