Simulation of microstructural evolution during isostatic compaction of monosized spheres

A numerical simulation of isostatic compaction of monosized spheres by discrete element method is presented in this paper. The dynamic microstructural changes of the particle compact during compaction were first investigated in terms of mean packing density and coordination number, and then characterized using percolation theory. The constitutive relationship between density and pressure was also examined, moreover used to validate the empirical relations obtained by experiments.