ABSTRACT
The focus of the present paper is to investigate the influence of density, pressure and mean grain diameter on shear banding in dry granular materials based on a hypoplastic constitutive model. With a unified description of the interaction between pressure level and density the hypoplastic model can be applied to a wider range of pressures and densities. A bifurcation analysis is carried out to study the onset of strain localization and the shear band orientation under plane-strain compression. The post-bifurcation behavior, i.e. the shear band evolution, shear band thickness and distribution of density, is investigated with finite element calculations using a polar hypoplastic model.
