Mechanical Engineering Commons^™

The Elastic Response Of A Cohesive Aggregate—A Discrete Element Model With Coupled Particle Interaction, George Jefferson, George Haritos, Robert Mcmeeking

Dr. George K. Haritos

A model is presented for the deformation of a cohesive aggregate of elastic particles that incorporates two important effects of large-sized inter-particle junctions. A finite element model is used to derive a particle response rule, for both normal and tangential relative deformations between pairs of particles. This model agrees with the Hertzian contact theory for small junctions, and is valid for junctions as large as half the nominal particle size. Further, the aggregate model uses elastic superposition to account for the coupled force–displacement response due to the simultaneous displacement of all of the neighbors of each particle in the aggregate. …