Influence of Pins on The Jamming Transition of a Sheared Athermal System

We use molecular dynamics simulations to study a two-dimensional athermal, bidisperse system with purely repulsive harmonic interactions. Via the motion of rough top and bottom walls consisting of  frozen particles, we shear the system. Energy is dissipated via interactions F^D= -b (r_ij/r_ij .v_ij) r_ij/r_i . The system furthermore has 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 show preliminary results for pressure and shear stress as function of packing fraction. We find that in agreement with previous work on the non-sheared system, the jamming transition decreases with increasing number of pins.