Hypoplastic constitutive model with critical state for granular materials

Behavior of strip footing on geogrid-reinforced sand over a soft clay slope

The effect of particle breakage on the shear strength of sand is studied by considering the energy consumption due to particle breakage at the contacts between sand particles. A stress–dilatancy relationship for sand under a triaxial loading condition is developed, adopting Rowe's minimum energy ratio principle. Particle breakage and its relation to the shear strength of a sand can then be evaluated based on this relationship. The increment of specific surface of the sand is used as an indication of the amount of particle breakage. Results of laboratory triaxial compression tests for Fulung sand, Tamsui River sand and a decomposed granite are examined and compared with the stress–dilatancy relationship. The effect of particle breakage on the shear strength of a sand can be correlated with rate of energy consumption of particle breakage and rate of increment in particle surface area per unit volume of sand as proposed in this study. The rate of energy consumption by particle breakage increases with increas...

Energy aspects of particle breakage in drained shear of sands

The paper presents a hypoplastic constitutive model for the three-dimensional non-linear stress-strain and dilatant volume change behaviour of sand. The model is developed without recourse to the concept in elastoplasticity theory such as yield surface, plastic potential and decomposition into elastic and plastic parts. Benefited from the non-linear tensorial functions available from the representation theorem the model possesses simple mathematical formulation and contains only four material parameters, which can be easily identified with triaxial compression tests. Comparison of the predictions with the experimental results shows that the model is capable of capturing the salient behaviour of sand under monotonic loading and is applicable to both drained and undrained conditions.

A simple hypoplastic constitutive model for sand

Bearing capacity of strip footings on sand slopes reinforced with geogrid and grid-anchor

https://www.jstage.jst.go.jp/article/sandf1972/29/1/29_1_45/_pdf

Yasuhiko Sato

Papers

Experimental stress-dilatancy relations of sand subjected to cyclic loading

Failure Mechanisms of Reinforced Sand Slopes Loaded with a Footing.

An automated triaxial testing system using a simple triaxial cell for soils.