The PDF simulation_setup_details describes the simulation details for the 4 simulations that were run.
Slide 1 shows the details for the simulations of rectangular particles
Slide 2 shows the details for the simulations of square particles
Slide 3 shows images of the initial setup of each simulation for each particle type and wall roughness
Slide 4 is a plot of the force vs. time for all 4 simulations  
All the units are standard physical units, m^3, m, and Pa. These are the volume of a given particle, it's position in the coordinate system, and the stress on the particle in the directions indicated by the subscripts 

There are two type of files each folder 'rect_B', 'rect_noB', 'sqr_B', 'sqr_noB':

1) Fx_wall.mat file. Two columns i) modeling time (s); ii) horizontal total buttressing force on the terminus (N)
2) ballPosStressVel.txt file. The modeling time interval between consecutive file is 2s. There are 600 files in total, so total modeling time is 1200s.The number in the filename increases as the simulation goes on. For each file, each row corresponds to information for one particle in the system. The column values correspond to 
	1) particle ID; 
	2) particle aspect ratio (useless); 
	3) particle volume (m^3); 
	4) particle coordination number; 
	5) position x (m); 
	6) position y (m); 
	7) position z (m); 
	8) stress_xx (Pa); 
	9) stress_xy (Pa); 
	10) stress_xz (Pa); 
	11) stress_yy (Pa); 
	12) stress_yz (Pa); 
	13) stress_zz (Pa); 
	14) velocity_x (m/s); 
	15) velocity_y (m/s); 
	16) velocity_z (m/s); 
	17) applied force x (N);
	18) applied force y (N);
	19) applied force z (N);
	20) Euler rotation angle around x-axis (degrees);
	21) Euler rotation angle around y-axis (degrees);
	22) Euler rotation angle around z-axis (degrees);

In the folders 'YYY_XXX_top' and 'YYY_XXX_side', are images from the simulations for each simulation setup. 'YYY' corresponds to 'sqr' or 'rect' and 'XXX' corresponds to 'B' or 'noB'. The labels 'B' and 'noB' correspond to 'rough' and 'smooth' for the experimental datasets.