Jamming Transition of Sheared Athermal System With Pins

Currently, the jamming transition in granular media is well supported by theory and there is a broad understanding of the applicability as well. Using molecular dynamics simulations, we study the jamming transition of a two dimensional sheared granular system. Shearing is implemented via freezing the top and bottom of the binary mixture to create a wall that can be sheared at a constant velocity. The system is a 50:50 binary mixture with purely repulsive harmonic interactions of size ratio 1:1.4. We will present preliminary results on the influence of the jamming transition due to a shear and the addition of non-moving "pins". The size ratio of pins:small:large is 0.004:1:1.4 and pins are located on a square lattice. We investigate pressure and shear stress, as well as force distributions, and heat maps of the local shear stress.