Figure 14. Normalized contact numbers for three contact types (L-L, L-S
and S-S) for different mixtures.
In order to further explore the effect of particle interactions on the
shear stress, detailed contact information is extracted from the DEM
simulations to illustrate the transmission of force in the system.
Contacts in a middle slice within the computational domain (one third of
the thickness of the domain), as shown in Figure 15, are displayed by
lines that connect the centers between two contacted spheres. The force
magnitude is represented by the thickness of the line.