2021 Triaxial_TEP_cb2020 (GiD)

A triaxial test can be easity simulated by a simple 2D geometry plus axisymmetric conditions. The boundary conditions are simple, for lateral surface (line) it is a constant stress (sigma3) and on top of the sample the constant stress (sigma3) is combined by a prescribed displacement rate that induces a variation of stress. Then, sigma1 = sigma3 + increment_sigma. The use of a simulation for a triaxial test calibration is specially necessary when dealing with complex constitutive models (Cam-Clay and BBM).