Evaluation of DeltaSand in numerical modelling of monotonic and cyclic element tests using experimental data of Toyoura sand
Evaluation of DeltaSand in numerical modelling of monotonic and cyclic element tests using experimental data of Toyoura sand
Due to the increase of complexity in offshore foundation design, advanced soil models are now more attractive to be adopted in design, in order to predict the mechanical behaviour of sand in different soil states for a wide range of stresses and strains. Before employing a constitutive model in boundary value problems, it is crucial to validate the model and calibrate its parameters at single point testing level. In this paper, the performance of DeltaSand - a new state-dependent double hardening constitutive model for sand - is evaluated. The assessment is based on available monotonic and cyclic triaxial laboratory tests as well as oedometer tests for Toyoura sand. The simulation results of Toyoura sand demonstrate that the DeltaSand model predicts the soil behaviour under both monotonic and cyclic loading with good accuracy by using only one set of parameters.
Majid Fetrati; Vahid Galavi; Majid Goodarzi; Asad Ayub; Sakineh Fazlighiyasabadi; S. Kreiter; Tobias Moerz
10th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2023)
1. Constitutive modelling for saturated and unsaturated soils
https://doi.org/10.53243/NUMGE2023-186
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