Particle flow simulation of sand under biaxial test

Sand, also known as non cohesive soil, the particle is contact point to point. The particle properties are very suitable for the simulation of particle aggregation through the biaxial tests. Study on the sand mechanical parameters by the biaxial test with a linear contact model, parameters of the study include: confining pressure, particle friction coefficient, the particle stiffness, particle size ratio. And the comparing with different parameter curve of peak strength, strain and secant modulus.