Influence of Finite Deformations in the Stress-Strain Modelling of Granular Mediaby Ching S. Chang, Univ of Massachusetts, Amherst, United States,
Anil Misra, Univ of Massachusetts, Amherst, United States,
Abstract: An incremental formulations of the stress-strain law is presented for quasi-static deformation of granular solids. The stress-strain relationship is derived for an element of granular media as a 'weighted' average of the local stress-strain behavior at a particle level. The local stress-strain relationship accounts for the change of configuration due to deformation as well as the evolution of packing structure due to sliding and separation of particle contacts.
Subject Headings: Stress strain relations | Granular materials | Particles | Mathematical models | Statics (mechanics) | Sliding effects
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