A system of balls compressed between two parallel plates with periodic boundary conditions. The beach ball texture of the spheres enables you to follow the rotation.
A system of balls compressed between two parallel plates in cylindrical container.
The cylindrical wall are made soft and the system further compressed. Velocities represented by arrows, local deformation by the size of the yellow balls. A cut from the 3d sample.
A cut of the force network of the same system.
Rotation of the particles represented by color. Green and red particles rotate in the different direction. Brightness is proportional to rotation speed/