An unsaturated soil is a state of the soil. All soils can be partially saturated with water.
Therefore, constitutive models for soils should ideally represent the soil behaviour over …

The range of problems that geotechnical engineers must face is increasing in complexity
and scope. Often, complexity arises from the interaction between the soil and the …

A review of the development and the usages of internal state variable (ISV) theory are
presented in this paper. The history of different developments leading up the formulation of …

The safety of underground energy transmission pipeline network is threatened by traffic,
earthquakes, explosions, and other stresses. To solve the problem of damage to the …

Rainfall-induced landslides pose a significant threat to the public safety in many parts of the
world especially in tropical or subtropical mountainous areas. The research field of …

This paper presents an advanced constitutive model for unsaturated soils, using Bishop's
effective stress (σ′) and the effective degree of saturation (S e) as two fundamental …

This paper presents an overview of constitutive modelling of unsaturated soils and the
numerical algorithms for solving the associated boundary value problems. It first discusses …

In a previous paper (Part VI), the impact of spatially varying density on the localization of
deformation of granular materials has been quantified using mesoscopic representations of …

The paper presents a new single-surface elasto-plastic model for unsaturated cemented
soils, formulated within the critical state soil mechanics framework, which should be …

Summary The Sandia GeoModel is a continuum elastoplastic constitutive model that
captures many features of the mechanical response for geological materials over a wide …