Severn-Trent sand: a kinematic-hardening constitutive model: the q-p formulation

摘要

A simple model is described which is able to represent the mechanical behaviour of granular soils over a wide range of void ratios and mean stresses(neglecting grain crushing). The model combines Mohr-Coulomb failure, critical states, dependence of strength and stiffness on the state parameter, a hyperbolic law for plastic stiffness degradation and a flow rule similar to that of Cam Clay. The model is formulated within the Framework of kinematic hardening and bound- Ing-surface plasticity.