Title of article :
Extracting inter-particle forces in opaque granular materials: Beyond photoelasticity
Author/Authors :
Hurley، نويسنده , , Ryan and Marteau، نويسنده , , Eloïse and Ravichandran، نويسنده , , Guruswami and Andrade، نويسنده , , José E.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Abstract :
This paper presents the first example of inter-particle force inference in real granular materials using an improved version of the methodology known as the Granular Element Method (GEM). GEM combines experimental imaging techniques with equations governing particle behavior to allow force inference in cohesionless materials with grains of arbitrary shape, texture, and opacity. This novel capability serves as a useful tool for experimentally characterizing granular materials, and provides a new means for investigating force networks. In addition to an experimental example, this paper presents a precise mathematical formulation of the inverse problem involving the governing equations and illustrates solution strategies.
Keywords :
multiscale modeling , Granular element method , contact forces , discrete mechanics
Journal title :
Journal of the Mechanics and Physics of Solids
Journal title :
Journal of the Mechanics and Physics of Solids