Figure 5
From: Self-propulsion of a grain-filled dimer in a vertically vibrated channel
Illustration of the model of the grain-filled dimer. The dimer consists of 3 rigid bodies: A rigid dimer (blue dumbbell-shaped object) and two identical point particles of mass m (gray solid circles) connected to the dimer by two dashpots. The dimer is made of two identical balls (blue circles) of mass M and they are glued to the two ends of a massless and rigid rod. The point particle interacts with the dimer through a dashpot connected to the center of each ball. The asymmetry of the composite system only exists within the friction coefficient of the two dashpots.
