Investigating the Impact of Anisotropic Consolidation on the Undrained Cyclic True Triaxial Behavior of Granular Soils
摘要
This research explores the behavior of granular assemblies subjected to anisotropic consolidation under undrained true triaxial loading conditions. The Discrete Element Method (DEM) is conjugated with the Coupled Fluid Method (CFM) to simulate fluid-solid interactions in undrained loading scenarios. The study focuses on two distinct phases of loading: anisotropic consolidation along a constant mean stress path, followed by undrained cyclic loading. During the anisotropic consolidation phase, samples are subjected to shearing at different Lode angles to achieve a range of initial static shear stress levels. In the subsequent phase, undrained cyclic loading is applied with constant shear stress amplitudes at different Lode angle values. The findings reveal that the Lode angle during both the consolidation and shearing phases significantly affects the stress-strain behavior of granular assemblies.