Modeling of Triaxial Pressure Tests with Uniform Granular Materials Discrete Particle Method

Predicting the mechanical behavior of the soils on which the structures and facilities are built is crucial in civil engineering. Although solutions are made by modeling the soils as continuous homogeneous environments due to their ease and fast solutions, the soil is the combination of particles in a multiphase environment. Therefore, the Discrete Element Method, which offers a closer approach to the soil properties, was used in the study. This study modeled the behavior of homogeneous granular materials under triaxial compression tests using the Discrete Element Method (DEM). DEM, an ideal numerical technique for simulating particle environments, was used to investigate the mechanical responses of granular assemblies when subjected to varying confining pressures. The research focused on the effects of particle shape, size distribution, and contact mechanics on the material's stress-strain relationship and deformation behavior during the test. Using the DEM approach and PFC3D, the triaxial compression test of uniform sands was modeled to estimate the Poisson's ratio, Young's modulus, and bearing capacity.