Multishear bounding surface modelling of anisotropic sands accounting for fabric and its evolution

Upgrading SANISAND model to address continuous stress principal axis rotation: A conservative approach

“…Introducing the fabric tensor to the model formulation, they have simulated a wide range of monotonic tests, including drained and undrained conditions under various load directions. The above-mentioned SANISAND models are also adopted for the multi mechanism method by Fang et al 29,30 As a result of the complicated material response as well as the scarcity of experimental data, constitutive modeling of granular materials under stress PA rotation has not been adequately developed so far. Although a number of constitutive models are developed in this context, [31][32][33][34][35][36][37] they can roughly be accepted as comprehensive solutions.…”

“…Introducing the fabric tensor to the model formulation, they have simulated a wide range of monotonic tests, including drained and undrained conditions under various load directions. The above‐mentioned SANISAND models are also adopted for the multi mechanism method by Fang et al 29,30 …”

Evolution of fabric anisotropy of granular soils: x-ray tomography measurements and theoretical modelling

“…Then a fabric evolution law is required. Fabric evolution laws can be categorised with respect to the variables considered to be relevant for the fabric rate: (i) stress ratio rate, current fabric tensor, and void ratio [55,56]; (ii) (plastic) strain rate, current fabric tensor and void ratio [49,57,58]; (iii) (plastic) strain rate as well as stress ratio rate, current stress and fabric tensors and void ratio [49,50,59,60]; and (iv) a plastic loading index, and the current fabric tensor [41, 50-53, 61, 62].…”