Abstract
A stress-strain model for granular materials is proposed by consideration of the mechanism of fabric change under shear. A new relationship between strains and fabric change of granular materials is derived from paying attention to "two particles" across the potential sliding plane and considering the mechanism of disappearance and generation of interparticle contacts with the third particle. Combining the above mentioned relationship between strains and fabric change with that between stresses and fabric change which has been proposed by Matsuoka (1974 a), a stress-strain relationship is formulated under two-dimensional stress conditions. The concept of "Spatial Mobilized Plane (SMP)" is then introduced to extend the stress-strain relationship to that in the three-dimensional state. For example, the stress-strain behaviours under cyclic loading and the liquefaction phenomena are analyzed by the proposed model.
