  We report an experimental study of the statistical properties of vibrated
granular rings. In this system, a linked rod and bead metallic chain in the
form of a ring is collisionally excited by a vertically oscillating plate. The
dynamics are driven primarily by inelastic bead-plate collisions and are
simultaneously constrained by the rings' physical connectedness. By imaging
many instances of the ring configurations, we measure the ensemble averages and
distributions of several physical characteristics on the scale of individual
beads and composite ring. We study local properties such as inter-bead
seperation and inter-bonds angles, and global properties such as the radius of
gyration and center of mass motion. We characterize scaling with respect to the
size of the chain.
