Sands

The friction angle of sands is computed by Bolton as the sum of the critical state friction angle and a dilatancy term which is a function of mean effective pressure and void ratio. Critical state is reached when dilatancy vanishes, either due to volume change – in drained shear – or effective Read more... about The friction angle and critical state void ratio of sands

A constitutive model to describe the mechanical behavior of sands under monotonic loading throughout the stress and strain range of engineering interest is presented. The model uses pressure-dependent elasticity, a three-invariant version of the Murata-Miura yield loci for plastic compression, Read more... about A constitutive model for sands: Evaluation of predictive capability

This paper presents a criterion for detecting diffuse (homogeneous) instabilities in granular soils sheared under fully drained conditions. Read more... about Modelling Diffuse Instabilities in Sands Under Drained Conditions

This study describes a general liquefaction flow instability criterion for elastoplastic soils based on the concept of loss of uniqueness. Read more... about Criterion for Flow Liquefaction Instability