One of the first courses I taught at Stanford was Advanced Soil Mechanics. The course title
was accurate in the beginning, but the contents gradually became more and more about …

We investigate three aspects of material behavior in this ninth installment of the Cam-Clay
series, namely, anisotropy, heterogeneity, and viscoplasticity. The main focus of the paper is …

Although the mechanical response of granular materials strongly depends on the interplay
between their anisotropic internal structure (fabric) and loading direction, such coupling is …

Compaction bands are tabular zones of localized compressive deformation associated with
porosity and permeability reduction. Depending on their orientation, compaction bands can …

The presence of fluid in the pores of a solid imposes a volume constraint on the deformation
of the solid. Finite changes in the pore volume alter the degree of saturation of a porous …

This paper introduces X-ray tomography as an experimental method that allows grain-scale
measurements for both porosity and degree of saturation. A whole configuration and set-up …

A series of discrete element method (DEM) triaxial compression simulations on specimens
of an anisometric granular material starting from distinct initial fabric anisotropy states are …

Geomaterials with aggregated structure or containing fissures often exhibit a bimodal pore
size distribution that can be viewed as two coexisting pore regions of different scales. The …

The incipience of shear band in homogeneous granular materials is well captured by the
bifurcation analysis. Most bifurcation analyses are based on isotropic plastic constitutive …

Compaction bands are tabular regions of localized compressive deformation with little or no
shear offset. Often observed in high‐porosity rocks, they can be classified into several …