The packing properties of superellipsoids
CSIRO Mathematical and Information Sciences - Private Bag 33, Clayton South, Vic, 3168, Australia
Corresponding author: firstname.lastname@example.org
Accepted: 18 January 2010
We investigate the properties of packings of frictionless non-spherical particles utilizing a dynamic particle expansion technique. We employ superquadric particles (superellipsoids), which allows us to explore how a broad range of particle shapes affect both the macroscopic and the local configurational properties of the system. We smoothly transition from spherical particles possessing only translational degrees of freedom to large aspect ratio non-spherical grains where rotational degrees of freedom are highly important. We demonstrate that the degree of anisotropy and local surface curvature of the particles have a profound effect on their packing properties, determining whether a random or an ordered packing is readily formed.
PACS: 45.70.-n – Granular systems / 61.43.Bn – Structural modeling: serial-addition models, computer simulation / 61.20.-p – Structure of liquids
© EPLA, 2010