Packing of particles for DEM models of dry snow
Data
2022Autorius
Kačianauskas, Rimantas
Kačeniauskas, Arnas
Pacevič, Ruslan
Stupak, Eugeniuš
Metaduomenys
Rodyti detalų aprašąSantrauka
The problem of the initial packing of particles arising in the modelling of dry snow by the Discrete Element Method (DEM) is investigated. A formal method based on the periodic cellular mesoscale discretisation concept was suggested for dry snow consisting of a quasi-periodic ice skeleton and porous volume. The volume of the ice skeleton is shaped on a mesoscale by extracting the quasi-periodic structure of the pores, and its volume is fulfilled by the dense composition of initially bonded spherical particles on a micro scale. The cellular structure containing the cubic cell with inscribed spherical pores is considered to demonstrate the method. A wide range of snow densities ranging from 500 down to 100 kg/m3 is obtained by reducing the cell size and increasing the sphere pores. The experimentally obtained density-elasticity relationship is reconstructed by DEM simulation of the uniaxial unconfined compression test.