Clay hypoplasticity model with explicit asymptotic state boundary surface formulation and very small strain stiffness anisotropy
2014
Abstract
Hypoplastic model for clays is presented which predicts anisotropy of very small strain stiffness. The existing hypoplastic model with explicit formulation of the asymptotic state boundary surface is combined with an anisotropic form of the stiffness tensor.
Naturally, the resultant model predicts correctly the very small strain stiffness anisotropy. It is demonstrated that properly are also predicted trends in the anisotropy influence on undrained stress paths.
The model is evaluated using hollow cylinder apparatus experimental data on London clay taken over from literature.