Interfaces in Particulate Materials

Interfaces in Particulate Materials Article

Misra, A. (1995). Interfaces in Particulate Materials . Studies in Applied Mechanics, 42(C), 513-536. 10.1016/S0922-5382(06)80024-3

This chapter presents an exposition of the interface models that describe the force-deformation behavior of interfaces between particles. The modeling methodologies in the mechanics of particulate media are described. It is suggested that the interface stiffness tensors that connect the force and deformations at particle interface, have a central role in the mechanics of particulate media. While discussing interface models, the Hertzian contact theory of contacting non-conforming elastic bodies under normal forces is described. The extension of Hertzian theory to account for tangential forces, including the effect of partial slip and consequent irrecoverable deformations, is presented. In addition, work on Hertzian theory to account for non-spherical particle shapes, surface roughness, and particle adhesion are described. Interface models for particles undergoing relative rotation, such as rolling and torsion, are also described. A compendium of measured inter-particle friction angles on various types of particle materials is presented from the data available in the literature. © 1995 Elsevier Ltd