Finite element validation of a bounding surface plasticity model

Abstract

A bounding surface plasticity model for cohesionless soils is validated with respect to two boundary value problems. In the first boundary value problem, the behavior of a model-scale footing resting on the surface of a sandy silt is analyzed. Whereas, in the second boundary value problem, the finite element simulations are compared with the behavior of the Leighton Buzzard Sand in the Cambridge Simple Shear Device. The validation of the constitutive model also included the predictions of the behavior of a sandy silt in a true triaxial apparatus following stress paths different from those used in the calibration of the constitutive model. Comparisons of the model predictions with the test results considered here show the validity of the constitutive model and its ability to simulate the soil behavior in a variety of loading conditions.