The Effects of Compression on Conducting Spheres as They Pertain to Studying Granular Percolation

Jon Rosch

2007

A simplified model to explain the relation between force, contact area, and resistance for conducting spheres has been developed to aid research on granular percolation. A three-dimensional spring model has been constructed to simulate the contact between two spheres and has provided theoretical data that confirms developed theory. Physical experiments were performed with rubber balls and stainless steel beads to verify the simulation using multiple configurations. The data from the rubber ball experiment is inconclusive but the resistance measurements from the stainless steel bead experiments appeared to follow power law relationships well, but each individual bead seemed to have had minor differences that may have caused some irregularity between different sets of beads.