Advanced Numerical Modelling of Granular Soils

Abstract

This chapter initially presents a brief review of the different types of constitutive soil models used in geomechanics and illustrates the implementation of a typical isotropic model. The constitutive behaviour of a double-hardening isotropic model is also highlighted as part of this review. The majority of the chapter is however concerned with the description and implementation of a multi-surface kinematic elasto-plastic constitutive soil model into a finite element program. The calibration of the model to a particular sand under monotonic and cyclic loading and the results of typical boundary values problems under monotonic and dynamic loading are presented. The ability of the model to simulate earthquake induced liquefaction, through work published from the VELACS project, is also shown.