Comparative performance of some constitutive models in stress rotation

Abstract

The dilatancy/contractancy of soil is of particular importance for compaction, consolidation, liquefaction, etc. Interestingly, constitutive relations are often unsatisfactory in modelling volume changes in the sense that their predictions deviate considerably from each other. This scatter is pronounced in problems with stress rotation. Therefore, in this paper some selected constitutive relations are investigated with respect to their performance at stress rotation. The obtained numerical simulations are compared to each other and also with experimental results from the 1γ2ε and the hollow cylinder apparatuses.

Keywords

• Principal stress rotation
• Constitutive Model
• Hypoplasticity
• Barodesy
• Saninsand