Viscoplastic subloading modelling of strain rate change effects in London clay

Abstract

This paper illustrates the capability of a new viscoplastic subloading model to reproduce the strain rate change effects. The viscoplastic subloading model used is based on the subloading surface concept with a mobile centre of homothety, enabling the occurrence of viscoplastic strains inside the yield surface. An undrained triaxial compression test performed on a normal consolidated reconstituted London Clay is modelled. The results show that this model is able to reproduce the strain rate change effects