ANALYSIS OF GRAIN KERNEL REBOUND MOTION

A model of a grain kernel impacting on a steel plate was developed. Th e rebound motion of a kernel depended on the kernel's organic properti es and irregular shape. A tangential velocity component was developed after impact if eccentric kernel impact occurred. The effects of grain type, moisture, size, kernel release height, and impact plate angle o n grain kernel rebound properties were studied. Among these factors, o nly the impact plate angle had a significant effect on rebound directi ons; the grain type, impact plate angle, and kernel release height wer e the three significant factors affecting the resultant restitution co efficient of a grain kernel. The rebound angle alpha affected both the tangential and normal rebound velocity but not the energy ratio.